When you inhale (breathe), air enters your lungs, and the oxygen in that air flows to your blood. Carbon dioxide, a waste gas, flows from your blood to your lungs at the same moment and is expelled (breathed out).
What causes air to exit the lungs during forced expiration?The second step is exhalation, or breathing out. The diaphragm relaxes as the lungs evacuate, lowering the volume of the thoracic cavity while raising the pressure within it. The lungs tighten as a result, and air leaves.
Exhalation relaxes the diaphragm and causes it to return to its domelike shape, pushing air out of the lungs.
Exhaling causes your diaphragm to relax and move up into your chest cavity. Carbon dioxide-rich air is forced out of your lungs and windpipe, and then out your nose or mouth, as the space in your chest cavity reduces.
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John had a brain tumor removed. now he has no vision in his left eye. the tumor was most likely located in john's _____ lobe.
Answer:
right occipital
Explanation:
4. Carbohydrates are broken down by the addition/removal (choose one) of a water molecule between
every two units. This is called
Answer: additional, dehydration synthesis
Explanation:
Do you think physical evidence has increased in importance over the last several decades, with advancements in technology and testing procedures? Why or why not?
Answer:
Yes, the significance of physical evidence has grown through new tests.
Explanation:
A lab group wishes to determine the volume of some zinc beads. They fill a graduated cylinder to the 42.55-mL mark with water. They carefully add the beads to the cylinder. The water level rises to 76.85 mL. What value should they report as the volume of the zinc beads?
The value the group should report as the volume of the zinc beads will be 34.30 mL
Volume of solids by sinking methodThe volume of a regular solid can be determined by allowing the solid to sink or float in a liquid in a calibrated cylinder.
The principle is such that a floating or sinking liquid will always displace its volume in any liquid.
Thus, assuming the initial level of the liquid in a cylinder is 50 mL. If the cylinder reads 70 mL after inserting the solid, the volume of the solid is calculated as the differences between the final and the initial cylinder readings.
In this case; initial reading = 42.55 mL, final reading = 76.85 mL
Volume of zinc beads = 76.85 - 42.55
= 34.30 mL
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MA (b) The figure above is highly magnified. The scale bar in the figure above represents 0.1 mm. Use a ruler to measure the length of the scale bar and then calculate the magnification of the figure above.
Magnification =
Answer: the scall is 25 feet tall so your answer is 456
Explanation:
The frog on the left was injected with MSH, causing a change in skin color within minutes due to a rapid redistribution of pigment granules in specialized skin cells. Using what you know about neuroendocrine signaling, explain how a frog could use MSH to match its skin coloration to that of its surroundings.
The Melanocyte-stimulating hormone hormone generates a hormonal reaction in frogs that signals the pigment to change hue. This causes the skin color of frogs to change as a result.
The frog is a tailless amphibian that primarily inhabits bodies of water like ponds and lakes and serves as a secondary consumer in the food chain.
Frogs are known for their slimy skin, tailless, two protruding eyes, webbed rear feet for leaping, unique ears attached to the lungs, sticky tongue, possessing four limbs, and a backbone.
The genuine toad, kaloula, poison dart frog, ghost frog, pelobates, and gastric-brooding frog are a few examples of several frogs. Frogs consume a variety of insects, including mosquitoes, flies, and dragonflies.
Skin cells, also known as keratinocytes, are the cells that make up the epidermal layer of eukaryotic creatures' skin, which serves as a protective barrier and contains the keratin protein. Heat regulation, protection, absorption, and secretion are a few of the skin's roles.
In vertebrate species, the pituitary gland creates a peptide hormone by secreting a melanin-like natural skin pigment. Melanocyte-stimulating hormone is the name of this hormone Melanocyte-stimulating hormone
Hormones are released by nerves during neuroendocrine cell signaling. Melanocyte-stimulating hormone is released into the bloodstream as a result of the neurons detecting and transmitting electrical signals.
Melanocyte-stimulating hormone binds to the target cell to cause pigmentation to occur. Thus, the pigment granules are redistributed as a result of this pigmentation development through target cells.
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Suppose you learned that the ZPA forms after the AER, leading you to develop the hypothesis that the AER is necessary for formation of the ZPA. If you removed the AER and looked for expression of Sonic hedgehog, how would that test your hypothesis?
In the development of vertebrate limb buds, the apical ectodermal ridge (AER) and the zone of polarizing activity (ZPA) are important morphogen sources. FGF and SHH, two diffusible molecules, act as positive feedback regulators to keep Fgf expression in the AER and Shh expression in the ZPA.
According to a recent experimental finding, activation and repression regulatory pathways help the FGF signal govern Shh expression in a feed-forward fashion. We investigate the link between the relative positions of the AER and ZPA as well as the coupled dynamics of Shh expression in the ZPA and Fgf expression in the AER. We begin by demonstrating how the experimentally observed peak of ZPA activity might arise far from the AER using simply feed-forward regulation. Then, we make it clear that by including the AER-ZPA feedback regulation, the resilience of the ZPA spatial pattern to changes in system parameters is improved. Additionally, sensitivity analysis demonstrates that there is an ideal feedback strength at which resilience is most enhanced.
Therefore, in this way you can test your hypothesis.
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Other observations showed that Balanus cannot survive high on the rocks because it dries out during low tides. How would Balanus's realized niche compare with its fundamental niche?
Unlike Chthamalus, its realized and fundamental niches would be comparable.
Describe the fundamental niche:The total collection of circumstances that allow an animal (population, species) to survive and reproduce itself is referred to as its fundamental niche. The settings that a given animal (population, species) really employs are known as its realized niche, taking into account interactions with the other species (predation, particularly competition).
The realized niche is the location where a species actually lives, as opposed to the fundamental niche, which is any type of environmental circumstance in which a specific species can survive.
What is a fundamental niche example?The red-winged blackbird serves as an illustration of a basic niche. Early in the spring, the marches are dominated by several bird species. The red-winged blackbirds make that area their primary habitat.
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safety and durability of rbx2660 (microbiota suspension) for recurrent clostridium difficile infection: results of the punch cd study
Among patients with recurrent or severe CDI, administration of RBX2660 via enema appears to be safe and effective.
What is the result of the above study ?Between 15 August 2013 and 16 December 2013, 40 patients were enrolled at 11 centres across the United States. Of those, 34 patients received at least one dose of RBX2660, and 31 finished the 6-month follow-up. Efficiency was 87.1% overall (16 with 1 dose and 11 with 2 doses). The most frequent 188 reported AEs were constipation, flatulence, diarrhoea, and abdominal pain/cramping. Over time, AEs became less frequent and more mild. Seven individuals had twenty significant adverse events (AEs), none of which were connected to the use of or administration of RBX2660.
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Can you identify the process by which natural selection acts on an insect population exposed to pesticides?
Identify the process by which natural selection acts on Change in Population the surviving insects reproduce. The frequency of resistant insects in the population increases.
Pesticides are any poisonous substances that are employed to kill animals, fungi, or plants and cause financial loss to crops or ornamental plants or pose a risk to domestic animals' or humans' health. A pesticide is used on an insect population. Some insects possess a trait that renders them pesticide resistant. These flies remain. Without the gene, insects perish. Insects that are still alive reproduce. Insects that are resistant are becoming more prevalent. Ecological Change Insecticide is used on a population of them. Choosing Pressure Some insects have a trait that renders them pesticide resistant. These bugs are persistent. Without the gene, insects perish.To learn more about Pesticides.
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How would a macrophage deficiency likely affect a person's innate and adaptive defenses?
PhagocytosisPhagocytosis of bacteria would not happen if macrophages were not there.
How do macrophages fight infections?The purpose of macrophages,which are scavenger is to consume or engulf infectious agents, including diseased cells. By releasing signals that encourages other cell types to become active in the fight against infections, macrophages also assist in the recovery form infection.
A macrophages deficiency would affect person's innate and adaptiveadaptive defenses by causing frequent infections and poor innate responses . Macrophages are attributed to protecting the host from infection and are key components of the innate immunity system.
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write a hypothesis for this experiment
if........
then......
because....
Answer:
What's the experiment?
Explanation:
Suppose a cell's membrane potential shifts from -70mV to -50mV . What changes in the cell's permeability to K⁺ or Na⁺ could cause such a shift?
Because the passage of K+ ions tends to make the cell negative, if K+ permeability persists, the membrane potential will never reach its optimal value (the sodium equilibrium potential).
What is membrane potential?Human life is impossible without membrane potentials. Over their membrane, every live cell maintains a potential difference. Simply said, differences in the concentration and porosity of significant ions along a membrane are what cause membrane potential.
A membrane has an electrical charge as a result of the different ion concentrations across it. Action potentials are produced by changes in membrane potential, which allow cells to communicate with other parts of the body.
The action potentials are electrical signals, more specifically, and they transmit innervation messages to the central nervous system for processing as well as afferent messages out of the brain to cause a certain response or movement.
Therefore, the passage of K+ ions tends to make the cell negative, if K+ permeability persists, the membrane potential will never reach its optimal value.
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Which of the following best describes the source of materials used to make purines and pyrimidines?
Answer:
Nitrogen, Carbon, Hydrogen
Explanation:
The purine and pyrimindines are nitrogenous bases which are made up of carbon and nitrogen rings arranged in different manners. We can also find other elements like oxygen and hydrogen in the structure of N-bases as well.
Match the following words with their meaning.
1. Methuselah
2. rainbow
3. seventh day
4. God's Creation
5. God's Word
6. living soul
Man
Bible
Rest
Good
Sign of covenant
The oldest man recorded in the Old Testament HURRY PLEASE
Based on information in the Bible, the correct descriptions are as follows;
Methuselah - The oldest man recorded in the Old Testamentrainbow - Sign of covenantseventh day - RestGod's Creation - GoodGod's Word - Bibleliving soul - ManWhat is the Bible?The Bible is the Holy Book which Christians view as containing the sayings of God.
In addition to containing the sayings of God, the Bible contains a record of God's dealings with man, as well as the records of the ancient Israelites, the history of the life and times of Jesus Christ, as well as how the Christian church began. There are also records of prophecies found in the Bible.
The Bible also is a guide book of how God would want humans to live in order to live a happy life, and most importantly, how man can regain everlasting life which God intended for man when he created him.
The Bible also contain a record of how life began on earth with the creation of the Universe by God in the beginning.
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the reaction allows us to amplify tiny amounts of dna, creating a powerful tool for diagnosis, forensics, and microbial investigation
The polymerase chain reaction allows us to amplify the tiny amounts of the dna, creating a powerful tool for diagnosis, forensics, and microbial investigation
Polymerase chain reaction (abbreviated PCR) is the laboratory technique for the rapidly producing (amplifying) millions or billions of the copies of a specific segment of the DNA, which can be then be studied in the greater detail PCR is a very powerful and the significant analytical tool to use for the forensic DNA typing because of the researchers only they need a very small amount of the target DNA to be used as for analysis. For example, a single human hair with the attached hair follicle has the enough DNA to be conduct the analysis.
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example of a modified nucleotide
Adenine: This nucleotide is a purine consisting of a double ring, and is the building block to the molecules mentioned in the previous section.
Songbirds migrate to warmer climates during the winter to find food.
Which characteristic of life does this behavior best illustrate?
Oheredity
Ogrowth and development
Oresponse
Ometabolism
The characteristic of life that is being exhibited by the song bird here is metabolism.
What are the characteristics of life?The characteristics of life refers to those things that living things are known for. These are the things that living things do. Those attributes tat go along with being alive.
The characteristics of the living things are known to include the following
Movement,Respiration,Nutrition,Irritability,Growth,Excretion,Reproduction,Death.The characteristic of life that is being exhibited by the song bird here is metabolism.
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Choose the term that correctly describes the relationship between these two sugar molecules: a. structural isomers b. cis-trans isomers c. enantiomers d. isotopes
The two compounds are structural isomers.
What are isomers?Isomers are compounds with the same molecular formula but different structural formula. This implies that isotopes have different atom to atom connections. This means that the atoms are connected differently.
Let us now examine the two structures in the image attached to this answer, we can see that the two compounds differ only in the position of the carbonyl bond.
This implies that the two compounds are structural isomers.
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Describe two hypotheses that explain why species diversity is greater in tropical regions than in temperate and polar regions.
The competition hypothesis and productivity hypothesis states that greater competition and productivity in the tropics are the reasons species diversity is greater in tropical regions than in temperate and polar regions.
What two hypothesis explain why species diversity is greater in tropical regions than in temperate and polar regions.?The two hypothesis that explain why species diversity is greater in tropical regions than in temperate and polar regions are:
competition hypothesis: this hypothesis postulates that greater competition rather than natural selection dues to extreme climatic conditions in are responsible for greater diversity in the tropics.
productivity hypothesis: states that greater production due to availability of , the plants results in greater species diversity.
In conclusion, the competition hypothesis and productivity hypothesis explains why species diversity is greater in the tropic than in temperate and polar regions.
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A grassland biome occupies much of the center of north america. why is this, in terms of environmental factors?
Because there is enough rain to sustain aban dant grass but not enough to sustain trees in the heart of North America.
What effect does logging have on the taiga biome?Logging and the more harmful practise of clear cutting, which involves the removal of significant regions of all trees, are endangering the taiga ecosystem's health. Trees not only offer habitat for wildlife, but they help maintain soil integrity.
The taiga biome, like many other woods, is threatened by deforestation. Humans are chopping down trees by the hundreds, and the taiga is gradually vanishing. This obviously has a detrimental influence on the forest since many animals lose their habitats and are forced to relocate.
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biologists who study how the activities of all living organisms affect both the atmosphere and climate are working in the field of
Biologists who study how the activities of all living organisms affect both the atmosphere and climate are working in the field of Global Ecology.
What is Global Ecology?Global Ecology is a field within the ecology discipline aimed at understanding the high-level organization of ecosystems in the biosphere.
Global Ecology is a fundamental application field for understanding how hydrosphere, biogeosphere and atmosphere may interact together to shape the ecosystems and their characteristics.
Global ecology is a field that increasingly is taking attention in biology due to it implicates different phenomena such as climate change, which may be partially solved by the use of renewable sources and clean energy.
In conclusion, biologists who study how the activities of all living organisms affect both the atmosphere and climate are working in the field of Global Ecology.
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nitrate nitrifying bacteria increase decreases stay the same
Nitrifying bacteria convert the most reduced form of soil nitrogen, ammonia, into its most oxidized form, nitrate.
Nitrifying bacteria control the nitrification step of the nitrogen cycle. The nitrogen cycle would be stopped. The nitrites could not be converted to nitrates and the ammonia compounds would acquire. a few of the various factors, soil matrix, water popularity, aeration, temperature, and pH have a robust impact on nitrification.
Nitrifying microorganisms convert ammonia to nitrites or nitrates. Ammonia, nitrites, and nitrates are all fixed nitrogen and can be absorbed by way of vegetation. This procedure usually takes anywhere from 2-6 weeks. At temperatures under 70F, it takes even longer to cycle a tank. In the evaluation of different styles of bacteria, Nitrifying microorganisms grow slowly. If all of the nitrogen-solving microorganisms disappeared, flowers and animals wouldn't acquire the nitrogen compounds they need to perform certain features.
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The collection of sequences sampled from a particular environmental sample is called?
The collection of sequences sampled from a particular environmental sample is called: metagenome
The metagenome is known as the set of microbial genes or microorganisms such as bacteria, yeasts and others present in a given environment or ecosystem. The method used to study this ecosystem (metagenome) is called metagenomics.
What is a bacteria?It is a microorganism formed by a single cell, of small size. Its cellular structure is prokaryotic and it is characterized by not having a nucleus.
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What is the ultimate source of all the energy that powers your cells ( ... all the energy that powers your cells (and > 99.9% of all life on earth)?
The ultimate source of energy that powers your cells and most > 99.9% of all life on earth is sunlight.
Energy into each food chain is brought by plants or algae. Plants have the capability to produce their own food through the process of photosynthesis.
In the process of photosynthesis, light energy from the sun is used to convert water and carbon dioxide into glucose and oxygen. It is through the process of photosynthesis that plants produce their own energy. All other life forms depend on plants in a way because each food chain either begins with a plant or algae. This energy from photosynthesis is then transported through each trophic level. Hence, the ultimate energy source for our cells is the light energy from the sun.
As the process of photosynthesis requires light energy from the sun, hence sunlight is the source of energy that powers our cells and of all life on earth.
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Interpret the Data
A correlation is a way to describe the relationship between two variables. In a positive correlation, as the values of one of the variables increase, the values of the second variable also increase. In a negative correlation, as the values of one of the variables increase, the values of the second variable decrease. Or there may be no correlation between two variables. If researchers know how two variables are correlated, they can make a prediction about one variable based on what they know about the other variable.
(a) Which variable(s) is/ are positively correlated with the volume of nectar production in this genus?
For the volume of nectar production, we have the following positive correlations;
Nectar concentrationSeeds per flowerVisits per flowerWhat is a correlation?In every dataset, we are trying to see how one more variables affects others. This could easily be see by the use of a scatter plot which could give us the correlation coefficient for the dataset
Now, We can say that there is a positive correlation exists between variables when an increase in one variables leads to an increase in another variable. A negative correlation occur when the increase in one variable leads to a decrease in another variable.
Hence, for the volume of nectar production, we have the following positive correlations;
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How would sequencing the entire genome of an organism help scientists to understand how that organism functioned?
All of an organism's proteins are encoded by its DNA, and proteins are the molecules that perform the work of the cells, that if an organism is unicellular or multicellular. Scientists would be able to catalog protein sequences if they knew the DNA sequence of an organism.
What is a genome?The genome is a cell's entire set of DNA instructions. The genome of humans is made up of 23 pairs of chromosomes located in the cell's nucleus, as well as a small chromosome located in the cell's mitochondria.
A genome contains all of the information required for a person to develop and function.
All of an organism's proteins are encoded by its DNA, and proteins are the molecules that do the work of the cells, regardless of whether the organism is unicellular or multicellular.
Scientists would be able to catalog protein sequences if they knew an organism's DNA sequence.
Thus, this way, sequencing the entire genome of an organism help scientists to understand how that organism functioned.
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Character displacement differs from resource partitioning because character displacement ________.
Because character displacement is directly linked to the evolution of genotypes that have allowed alternate resource use.
What is resource partitioning ?Asset Apportioning alludes to the division of assets to keep away from interspecific rivalry for restricted assets in a biological system. A transformative variation assists different species with coinciding in an environmental local area.
Asset parceling concentrates on help in deciding the impact of the expansion or expulsion of an animal categories in a specific natural surroundings and the working of a biological system.
In a biological system, life forms require assets, for example, supplements and territories to develop, repeat and live. There are restricted assets present in a territory for which all organic entities contend.
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A client experiencing immotile cilia syndrome (kartagener syndrome) should be frequently assessed by the nurse for which priority complication?
Bronchiectasis brought on by obstructions in the respiratory tract's ability to remove inhaled germs.
What is Kartagener's syndrome?Situs inversus, chronic sinusitis, and bronchiectasis together up the trinity that characterizes the uncommon autosomal recessive genetic ciliary condition known as Kartagener's syndrome. The fundamental issue is the improper movement of cilia, which causes infertility, frequent chest infections, and ear, nose, and throat complaints.
Some signs could be:
lung infections that are common.persistent coughingwet cough that is productive.excessive mucussinus infections that are common.frequent infections in the middle ear.loss of hearing.your lungs developing scarsLearn more about the Kartagener's syndrome with the help of the given link:
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If you were a pharmaceutical researcher, why would you want to learn the three-dimensional shapes of naturally occurring signaling molecules?
If we were a pharmaceutical researcher, we want to learn the three-dimensional shapes of naturally occurring signaling molecules, because the molecular shape of chemicals helps us to understand the effect of the molecules on person.
Each and every molecule has their unique structure and size that are necessary for the functioning inside the living cells. And the molecule shape decides the connection as we can see in signaling molecules. If the molecule does not binds to the receptor then the signal can never be initiated.
So, that the pharmaceutical researcher discover how to change the conformation of signaling pathway that helps to treat diseases, that requires three-dimensional shapes of naturally occurring signaling molecules.
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