An estrous cycle differs from a menstrual cycle in many ways as the estrous cycle happens in non-primate mammalian females, while the menstrual cycle happens in primate females.
Difference between estrous cycle and menstrual cycle:
The estrous cycle is the kind of conceptive cycle where the endometrium layer isn't shed away in that frame of mind of treatment; rather, it is reabsorbed. The event of this cycle can be one time per year or at least a few times, with a fluctuating stretch of time. Sexual receptivity is just found at the ovulation stage.
Conversely, the feminine menstrual cycle is portrayed by the shedding of the endometrial covering without any treatment. This cycle happens consistently (till menopause), and sexual receptivity is tracked down all through the cycle.
Animals in which these two types of cycles are found:-
The estrous cycle happens in non-primate mammalian females, while the menstrual cycle happens in primate females In creature order, vertebrates have a place with the class Mammalia; these are portrayed by the furry body, minuscule bones of the ear, and the presence of milk-delivering organs in the female individuals.Warm-blooded creatures are characterized by more modest gatherings in light of their different life structures and physiology.In warm-blooded creatures, proliferation happens through sexual mode and requires the association of gametes; this association happens inside the female regenerative design.To learn more about the estrous cycle and menstrual cycle, visit: https://brainly.com/question/9531456
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question mode fill in the blank question fill in the blank question. the phenomenon that causes a single ancestral species to evolve into a wide array of descendant species with diverse habitats, forms, or behaviors that occurs often as a result of colonization of a new area is known as radiation.
the phenomenon that causes a single ancestral species to evolve into a wide array of descendant species with diverse habitats, forms, or behaviors that occurs often as a result of colonization of a new area is known as Adaptive radiation.
According to theory, an ecological opportunity or even a new adaptive zone might cause adaptive radiations. The disappearance of competitors and predators, the development of significant innovation, and dispersal to just a new environment can all be causes of ecological opportunity. Each of these environmental opportunities could lead to an expansion of the population and lax stabilizing (constraining) selection.
The expanding population would have greater genetic diversity than the original population since genetic diversity, as well as population size are positively associated. Phenotypic variety can rise when stabilizing selection is less intense.
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to determine the tonicity of red blood cells, a blood sample was placed in an isotonic saline solution. what would one expect to see under the microscope if there was a higher solute concentration inside the red blood cells?
A look under the microscope will show the cells rapidly shrink and crenate.
What is tonicity?Tonicity can be defined as the ability of an extracellular solution to make water move out or move into of a cell through the process of osmosis.
If a blood sample is placed in an isotonic saline solution and viewed under a microscope, the blood cell will be seen as shrinking and crenate as water molecules move by osmosis from a higher concentration to a lower concentration.
The tonicity of a solution often directly correlates with the osmolarity of the solution.
In conclusion, in a hypertonic solution the extracellular fluid has a higher osmolarity than the blood cells meaning that the fluid contains less water than the cell does.
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The process of evolution by natural selection depends on the existence, in every biological population of?
The process of evolution by natural selection depends on the existence, in every biological population of genetic variability.
Genetic Variability- The capacity of the genes present to enable a cell, organism, or population to live and reproduce is known as genetic viability.
Natural Selection- An evolutionary mechanism is natural selection. Environment-adapted organisms have a higher chance of surviving and dispersing the genes that contributed to their success. Over time, this mechanism leads to the evolution and divergence of species.
Genes- The fundamental genetic component transferred from parent to child. Genes are composed of DNA sequences and are organized sequentially at specified sites on chromosome in the cell nucleus.
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The majority of the arterial supply to the head and neck comes from the ________
The majority of the arterial supply to the head and neck comes from the arteries.
What are arteries?
In human beings and the general public of other animals, an artery (plural arteries) is a blood vessel that transports blood from the heart to at least one or greater body components (tissues, lungs, mind, and so forth.). The umbilical and pulmonary arteries, which delivery deoxygenated blood to the organs that oxygenate it, are the 2 exceptions to the rule that most arteries deliver oxygenated blood (lungs and placenta, respectively). The extracellular fluid that fills the arterial device is the effective arterial blood extent.
The circulatory device, which includes the arteries, is in fee of transporting oxygen and nutrients to all cells, casting off carbon dioxide and waste products, keeping a super blood pH, and transferring immune machine proteins and cells.
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In a separate experiment, researchers disrupted the block to polyspermy, generating embryos with 7 to 10 sperm nuclei. At the end of cleavage, these embryos had the same nucleus-to-cytoplasm ratio as the wild-type embryos, but cleavage ended at the 10th cell division rather than the 12 th cell division. What do these results indicate about the timing of the end of cleavage?
Fertilization calcium waves are introduced, and evidence is presented that allows us to infer the general mechanism of these waves.
Two major classes of hypotheses submitted to explain the generation of fertilization calcium waves are presented, and the triggering of fertilization calcium waves in inverted animals can most commonly be explained by the mechanism by which activators enter the oviduct. I conclude.
Activates the egg by stimulating activation of phospholipase C via the src family kinase pathway and, in mammals, by diffusion of sperm-specific phospholipase C from sperm to egg in sperm-egg fusion. Waves are placed in the context of cell cycle control to investigate the mechanism of repetitive calcium spikes in mammalian eggs.
The evidence that calcium signaling controls early embryonic cell division is reviewed, and it is concluded that calcium signaling is essential in all three stages of early embryonic cell division. Evidence is contemplated that the Phosphoinositide signaling pathway controls meiotic resumption during oocyte maturation. Overall, the evidence is concluded to indicate a requirement for phosphoinositide/calcium signaling during meiosis resumption.
During meiosis, changes in the calcium signaling machinery occur, resulting in the generation of a calcium surge when a mature oocyte is fertilized. We review evidence that the shape and structure of the endoplasmic reticulum change dynamically during maturation and after fertilization, and discuss the link between endoplasmic reticulum dynamics and the cytoskeleton.
There is evidence that calcium signaling plays an important role in the development of early embryonic patterns. We briefly describe the morphogenesis of sea squirt, frog, and zebrafish embryos and describe the developmental context in which calcium signaling functions.
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Like oil and coal, ________
is a byproduct of the natural decay
process of plant and animal material over millions of years. (2 words)
Answer
Answer:
natural gas- its another fossil fuel
The microscope slide rests on the __________ while being viewed. iris stage condenser base
The microscope slide rests on the stage while being viewed and is therefore denoted as option B.
What is a Microscope?This refers to a type of instrument which is commonly used in the laboratory to view objects which are very small and are unable to be viewed by the eyes and is done by enlargement to different magnifications through different types of techniques.
The microscope slide rests on the stage while being viewed and there is a a hole in it to permit light to pass through both it and the specimen thereby allowing for accuracy in the observation process.
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The data above are expressed in scientific notation: a numerical factor times a power of 10. Remember that a negative power of 10 means a number less than 1. For example, 10⁻¹M (molar) can also be written as 0.1M . Write the concentrations in the table above for morphine and atropine in this alternative format.
The concentration can be found if the data was presented with the help of the beer lambert law.
What is the beer lambert law?According to the Beer-Lambert law, the characteristics of the medium through which light is traveling affect how much light is attenuated. The Beer-Lambert Law is briefly discussed on this page, along with the definitions of the terms "absorbance" and "molar absorptivity" as they apply to UV-visible absorption spectrometry.
The intensity of the light going through the reference cell is calculated for each wavelength of light flowing through the spectrometer. Typically, this is referred to as Io, which stands for intensity.
Therefore, the beer lambert law can be used for the determination of concentration.
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a strain of streptococcus pneumoniae is no longer able to synthesize its capsule. what is the likely outcome?
A strain of Streptococcus pneumoniae is no longer able to synthesize its capsule. Its likely outcome is that it will be readily phagocytized upon entering the host.
A recent study has found that a strain of Streptococcus pneumoniae is no longer able to synthesize its capsule. This is a major concern, as this particular strain is known to be highly virulent. Without a capsule, the bacteria will be much more susceptible to phagocytosis by the host's immune cells. This could lead to a more serious infection, and potentially even death. The researchers are urging caution and urging people to get vaccinated against this strain of bacteria.
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Define aerobic respiration in detail.
Answer:
Aerobic respiration is the process in which oxygen is used to create energy from carbohydrates. This process is enzyme-controlled, and the energy stored is released during photosynthesis. This process has 4 stages; glycolysis, link reaction, the Krebs cycle, and last but not least, oxidative phosphorylation.
During which prenatal period do the nervous system, organs, and muscles become organized and connected, and behaviors suck as kicking and thumb sucking appear?
During the prenatal period, the fetus's nervous system, organs, and muscles become organized and connected. This is when behaviors such as kicking and thumb sucking appear.
This is an amazing time for the fetus, as they are growing and developing at a rapid pace. It is also a time when they are extremely vulnerable to anything that could potentially harm them.
That is why it is so important for pregnant women to take care of themselves during this time. Eating a healthy diet, getting enough rest, and avoiding stress are all crucial for a healthy pregnancy.
If you are pregnant, or know someone who is, make sure to take care of them during this precious time.
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one of a botanist's hybridization experiments with peas yielded offspring with of those peas (or %) having yellow pods. according to genetic theory, 25% of the offspring peas should have yellow pods.
We utilize the X2 test to determine whether or not there is a discrepancy between observed and predicted frequencies in a population. There is no statistically significant difference here. H-W equilibrium exists in the population.
What is the Hardy Weinberg equation?Calculating the genetic diversity of a community at equilibrium may be done using the Hardy-Weinberg equation. The main concept in population genetics that G. H. Hardy and Wilhelm Weinberg separately described in 1908 is now known as the Hardy-Weinberg equation.
The Hardy-Weinberg equilibrium principle, which holds that the level of genetic diversity in a population will stay unchanged from one generation to the next in the elimination of unfavorable circumstances, is expressed by the equation.
Therefore, we utilize the X2 test to determine whether or not the difference between the observed and predicted frequencies in a population is statistically significant. The statistical significance of this discrepancy is zero. There is an H-W equilibrium in the population.
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Which statement is correct about rough ER and smooth ER?
A: Rough ER contains ribosomes, and smooth ER transports materials other than proteins.
B: Rough ER contains ribosomes, and smooth ER transports proteins.
C: Rough ER transports proteins, and smooth ER contains ribosomes.
D: Rough ER transports materials other than proteins, and smooth ER contains ribosomes.
The statement that is correct about rough ER and smooth ER is that Rough ER contains ribosomes, and smooth ER transports materials other than proteins (option A).
What is the endoplasmic reticulum?Endoplasmic reticulum is a network of membranes within the cytoplasm of cells, where proteins and lipids are synthesized.
The endoplasmic reticulum are of two types namely;
Rough endoplasmic reticulumSmooth endoplasmic reticulumThe major difference between these two endoplasmic reticulum is that ribosomes are attached to the rough ER but not attached to the smooth ER, hence, their respective names.
This difference plays a vital role in their function because rough ER is involved in protein synthesis while the smooth ER is involved in lipid synthesis.
Therefore, the statement that is correct about rough ER and smooth ER is that Rough ER contains ribosomes, and smooth ER transports materials other than proteins.
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Carbon-14 dating works for fossils up to about 75,000 years old; fossils older than that contain too little ¹⁴C to be detected. Most dinosaurs went extinct 65.5 million years ago.
(a) Can ¹⁴C be used to date dinosaur bones? Explain.
Carbon-14 dating works for fossils up to about 75,000 years old; fossils older than that contain too little ¹⁴C to be detected.
Most dinosaurs went extinct 65.5 million years ago.
Can ¹⁴C be used to date dinosaur bones?
No, ¹⁴C can used to date dinosaur bones
Why carbon dating cannot be used to detect the age of dinosaur?
Carbon-14 dating will not work on dinosaur bones. The half-life of carbon-14 is only 5730 years, so carbon-14 dating is only effective for samples that are less than 50,000 years old. On the other hand, dinosaur bones are millions of years old - some fossils are billions of years old. To determine the age of these specimens, scientists need an isotope with a very long half-life. Some of the isotopes used for this purpose are uranium-238, uranium-235, and potassium-40, each of which has a half-life of over a million years.Unfortunately, these elements do not exist in the dinosaur fossils themselves. Each typically exists in igneous rock or rock made from cooled magma. However, fossils form in sedimentary rock -- the sediment quickly covers the dinosaur's body, and the sediment and bones gradually turn into rock. However, this sediment usually does not contain the necessary isotopes in measurable quantities. Fossils cannot form in igneous rock, which usually contains isotopes. The extreme temperatures of the magma would only destroy the bones.To learn more about carbon dating, refer to:
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jayden yugie aug 22 · 4 min read · member-only · this extinct animal species was brought back to life the world's first ever de-extinction
the extinct animal species was brought back to life the world's first ever de-extinction was Pyrenean ibex.
Species is a group of organism that with similar physical and anatomical features which can interbreed among themselves to produce viable offspring.
De-extinction is the process by which an organism is produce which is an extinct species or resembles a extinct species. it can be done using selective breeding, genome editing, iterative evolution and cloning.
It can help in revival of the extinct or critically endangered species. But it is an expensive process and reintroduction of extinct species can cause ecological imbalance.
First extinct species to be re-introduced was Pyrenean ibex.
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Who has to verify a theory multiple times?
certified scientists
90% of the scientific community
researchers with PhDs
several separate groups of researchers
certified scientists has to verify a Theories multiple times
The Verification is the process of checking, and confirming, that making sure, and being the certain. In qualitative research, the verification refers to the mechanisms that used during the process of the research to the incrementally contribute to ensuring the reliability and validity and, thus, the rigor of the study. Chartered Scientists demonstrate effective leadership, using their specialist knowledge and the broader scientific understanding to develop and also improve the application of the science and technology by scoping, the planning and then managing multifaceted projects. to verification theory meaning claims that it is meaningful if and only if we can describe which state of the affairs has to be observable so that the sentence that can be said to be true.
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Clear cutting trees, pumping of wells, removal of copper from a mine are example of . Resource depletion, pollution, loss of biodiversity, or risk
Clear cutting trees, pumping of wells, removal of copper from a mine are example of Resource depletion and is therefore denoted as option A.
What is Resource depletion?Resources is referred to as the materials which are usually naturally occurring and help to improve the standard of living of humans thereby making them much needed and valued. They are of two types which are renewable and non-renewable resources.
Resource depletion on the other hand involves the consumption of resources in such a way that replenishment takes more time and examples include clear cutting of trees etc.
Pumping of wells and removal of copper from a mine are also examples because their consumption is faster than it can be replenished thereby making option a the most appropriate choice.
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What features of a mammal's digestive system make it an attractive habitat for mutualistic microorganisms?
The digestive system of a mammal offers mutualistic microbes a home that is shielded from other microbes by saliva and gastric juice, that is maintained at a constant temperature conducive to enzyme activation, and that offers a consistent supply of nutrients.
What is mutualism?When two or more species interact ecologically, mutualism refers to the situation where each species gains something from the interaction. A typical form of ecological interaction is mutualism. In ecology and evolution, mutualism is crucial. For instance, since around 80% of land plant species depend on mycorrhizal partnerships with fungi to supply them with inorganic compounds and trace elements, mutualistic interactions are essential for the functioning of terrestrial ecosystems. The evolution of much of the biological diversity we observe, including flower shapes (which are crucial for pollination mutualisms) and co-evolution between species, is also believed to have been fueled by mutualism. Mutualism has also been connected to important evolutionary occurrences like the symbiogenesis—the process by which the eukaryotic cell evolved—and the colonization of the land by plants and mycorrhizal fungus.Learn more about the Mutualism with the help of the given link:
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Juan and sergei are making a display about water conservation. To make a greater visual impact, they decide to add blue food coloring to the water, but just enough that it is noticeable. Juan adds 2 drops of food coloring to the water, and stops because he can see the blue color. Sergei tells him to put another drop in because he doesn’t see any blue yet. Juan’s _______________ is probably lower than sergei’s.
Juan’s Absolute threshold is probably lower than Sergei's.
An absolute threshold is the lowest level of a stimulus that an organism can detect. This definition originated in neuroscience and psychophysics. The absolute threshold has been redefined in light of the signal detection theory as the point at which a stimulus will be picked up a certain percentage of the time (typically 50%). The subject's goals and expectations, cognitive processes, and degree of stimulus adaptation are a few examples of the many variables that might affect the absolute threshold. The smallest stimulus level that may be recognized is known as an absolute threshold, which is often regarded as occurring at least half the time. The phrase is frequently employed in experimental neuroscience research and is applicable to any stimuli.
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Describe the ion movement across the cell membrane during the following stages:________
a. resting potential,
b. threshold potential,
c. depolarization,
d. repolarization.
The ion movement across the cell membrane during the following stages:
Resting potential: Movement of K⁺ ions outside the cell membrane due to K⁺ leaky channels. All other channels are closed. Threshold potential: Na⁺ voltage-gated channels open and there is an influx of Na⁺ ions. Depolarization: Na⁺ ions move inside the cell. Depolarization causes threshold potential.Repolarization: Na⁺ channels close and K⁺ channels open. K⁺ ions move out of the cell.Cell membrane is the outer layer surrounding the cells. It formed from lipid bilayer consisting of other components like proteins, carbohydrates, cholesterol, etc. The cell membrane is selectively permeable.
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(a) In the field, S. patens is typically absent from freshwater marshes. Based on the data, does this appear to be due to salinity or competition? Explain your answer.
An experiment on S. patens and T. angustifolia demonstrates how salinity and competition impact plant dispersal in an estuary.
According to observations made on the ground, Typha angustifolia, or cattail, predominates in freshwater marshes, whereas Spartina patens, or salt marsh hay, is the main plant in salt marshes.The saltmeadow cordgrass (S. patens), which is native to the east and Gulf coasts of North America, has been introduced to the west coast. It is a climax species found in high marsh environments, most specifically in the area to the seaward of the high-water line.T. angustifolia is supported by various wetlands, reservoirs, ponds, canals for navigation, and natural freshwater drainage and irrigation systems. Due of its clonal growth habit and strong competitiveness, it frequently forms monodominant stands in favorable growth environments.Learn more about the halophytes with the help of the given link:
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What is cladogram? ayoooooooooo
Answer:
a branching diagram showing the cladistic relationship between a number of species.
Explanation:
As noted in Figure 53.2, an important assumption of the mark-recapture method is that marked individuals have the same probability of being captured as unmarked individuals. Describe a situation where this assumption might not be valid, and explain how the estimate of population size would be affected.
If an animal is lured in with food, it is more likely to be recaptured if it craves the same food. Because the population size (N) = mn/x N, the number of marked animals recaptured (x) would be an overestimation.
Briefing :
Alternatively, if an animal has a bad experience during capture and learns from it, it may be less likely to be captured again. In this example, X is an underestimation and N is an overestimation.
Population size :Population size is defined in population genetics and population ecology as the number of individual organisms in a population. Population size is intimately related to genetic drift and is the fundamental cause of phenomena such as population bottlenecks and the founder effect. The four primary factors are the birth rate, the death rate, immigration, and emigration.
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choose the correct anatomical sequence that presents the order in which food in the digestive system passes through. view available hint(s)for part a choose the correct anatomical sequence that presents the order in which food in the digestive system passes through. esophagus → stomach → pharynx → small intestine pharynx → stomach → esophagus → small intestine pharynx → esophagus → stomach → small intestine → large intestine esophagus → pharynx → stomach → small intestine pharynx → small intestine → large intestine → stomach
The correct sequence of the human alimentary canal is Mouth → Esophagus → Stomach → Small intestine → Large intestine.
What is the alimentary canal in the human body?the organs that food and liquid pass through on their way to being ingested, digested, absorbed in, and excreted as faeces. The mouth, pharynx (throat), oesophagus, stomach, small intestine, large intestine, rectum, and anus are included in this group of organs. The digestive process includes the gastrointestinal tract.
Where is the alimentary canal located?The digestive tract (also called the digestive tract). Food can move through the body via this long tube of organs. It encompasses the oesophagus, stomach, and intestines and extends from the mouth to the anus (where excrement emerges). The digestive tract of an adult is approximately 30 feet (9 meters) long.
The correct sequence of the human alimentary canal is Mouth → Esophagus → Stomach → Small intestine → Large intestine.
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which revision of the sentence adds an adverb phrase? coyotes hunt at night. coyotes hunt many types of prey at night. coyotes hunt many types of prey at night. coyotes hunt for large prey at night. coyotes hunt for large prey at night. coyotes, in the canine family, hunt at night. coyotes, in the canine family, hunt at night. coyotes of all ages hunt at night.
Coyotes hunt for large prey at night revision of the sentence adds an adverb phrase
What is a sentence with an adverbial phrase like?For instance, the adverbial phrase to see my friend might explain your intention if you were to say, "I went into town to visit my buddy." Because it describes the verb went, this phrase can be regarded as an adverb. Adverbial expressions are frequently used to describe the frequency of an action.
An adverbial phrase is one that modifies an adjective, verb, or adverb. It is an adjectival phrase if it modifies a noun or a pronoun.
In the English language, there are five fundamental categories of adverbs: manner, time, place, frequency, and degree.
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you are presented with several single-celled organisms, including one thought to belong to the kingdom fungi. what unique shared derived feature helps you identify this as a fungus? group of answer choices presence of chitin in its cell walls presence of feeding cells presence of nuclei presence of chloroplasts
The unique shared derived feature that helps to identify a fungus is: presence of chitin in the cell walls.
Fungus actually refers to the organisms of Kingdom Fungi. These are eukaryotic heterotrophic organisms that may be unicellular or multicellular. They are non-vascular as well as non-motile. The reproduction in fungi occurs by the means of spores.
Chitin is the polymers of N-acetyl-d-glucosamine groups. These are joined together by β (1→4) linkages. They are commonly found in the cell wall of fungi and in the exoskeleton of arthropods. It is non-toxic and biodegradable polymer. It is known to be the 2nd most abundant biodegradable substance.
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Lab tests of two patients, each diagnosed with excessive thyroid hormone production, revealed elevated levels of TSH in one but not the other. Was the diagnosis of one patient necessarily incorrect? Explain.
There could be two different scenarios for (TSH)
First, despite receiving adequate hormonal input from the hypothalamus and anterior pituitary, the thyroid gland may create too much thyroid hormone.Second, abnormally high thyroid-stimulating hormone (TSH) levels may be the cause of an overactive thyroid gland. Therefore, there is a possibility that both diagnoses are accurate.Numerous glands in the body produce hormones, which have a variety of physiological effects. Growth and development depend on hormones.
The thyroid gland creates the thyroid hormones triiodothyronine (T3) and thyroxine (T4). The rate at which calories are eaten by each and every cell and organ in the body is regulated by thyroid hormones, which also control weight gain and loss.
When activated by TSH, the thyroid gland produces thyroid hormones. Blood tests that measure T3, T4, and TSH levels can be used to identify several medical conditions.
When the thyroid gland generates too much thyroxine, hyperthyroidism (overactive thyroid) results. In addition to causing weight loss, hyperthyroidism accelerates the body's metabolism, which results in a rapid or erratic heartbeat.
Iodine toxicity may result in the thyroid producing an excessive amount of thyroid hormones.
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How do stains used for light microscopy compare with those used for electron microscopy?
Answer:
stains for LM are colored molecules that bind to cell componetns affecting the light passing through. Stains used for EM involve heavy metals that affect the beams of electrons passing through.
Explanation:
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Answer:
In light microscopy, the cell components are stained using colorful dyes or stains affected by the light passing through them, and the specimens are clearly visible. However, in electron microscopy, the stains are heavy metals scattered on the biological samples affected by the beam of electrons.
Explanation:
True or false the prefix strepto- means that the bacteria are arranged in clusters.
The statement 'prefix strepto- means that the bacteria are arranged in clusters' is FALSE and it is used to indicate twist shape.
What does prefix strepto- mean?The prefix strepto- is used in biology to denote any form of life such as microorganisms (e.g. bacteria form Streptococcus genera) that exhibit twisted-shaped structures.
In conclusion, The statement 'prefix strepto- means that the bacteria are arranged in clusters' is FALSE and it is used to indicate twist shape.
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Which landforms are most likely affected by the creation of polders?
Answer: Lowlands
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