Answer:
ok
Explanation:
A student adds 10 drops of a copper sulfate and sodium hydroxide solution to a test tube containing chicken broth. The solution undergoes a color change from blue to purple.
The presence of which organic molecule is indicated by the color change of the solution? A.Responses B. nucleosome C. protein D. fatty acids and glycerol E. glycogen
Correct answer is C. The presence of protein molecule is indicated by the color change of the solution
A standard solution is a liquid that contains an element or chemical in a precisely determined concentration. The solute is dissolved in the designated volume at a known mass. It is prepared using a primary standard or another material that must comply to requirements.
Qualities of solutions that depend more on the proportion of solute to solvent particles than on the characteristics of the individual particles are known as coagulative properties.
The different concentration units can be related using the number ratio. One molal is another name for a solution that has a concentration of 1 mol/kg. Molar mass must be represented in kg/mol rather than the more widely used g/mol or kg/kmol when using the unit mol/kg.
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Answer: Correct answer is C. The presence of protein molecule is indicated by the color change of the solution
The electrical impulse is __________ as it passes through the av node, which permits the atria to contract __________ ventricles
The electrical impulse is delayed as it passes through the av node, which permits the atria to contract before ventricles.
What are ventricles?
A ventricle is one of two sizable chambers at the base of the heart that gather and discharge blood to the lungs and peripheral beds of the body. An atrium, a nearby chamber in the upper heart that is smaller than a ventricle, provides the blood pumped by a ventricle. Interventricular refers to structures between the ventricles, such as the interventricular septum, whereas intraventricular refers to structures inside a single ventricle (for example an intraventricular block).
The right ventricle pumps blood into the pulmonary circulation, which travels to the lungs, and the left ventricle pumps blood into the systemic circulation, which travels through the aorta, in a four-chambered heart like the one seen in humans.
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Gray whales (Eschrichtius robustus) gather each winter near Baja California to give birth. How might such behavior make it easier for ecologists to estimate birth and death rates for the species?
Ecologists might theoretically estimate birth rates by measuring the number of children born each year, and mortality rates by observing how the number of people fluctuates year after year.
What does a ecologist do ?Ecologists examine these interactions between species and ecosystems of all sizes, from minuscule bacteria living in a fish tank to the complex interactions between thousands of plant, animal, and other groups found in a desert. Ecologists investigate a wide range of habitats.
What is an example of mortality ?Mortality is the condition of having to die one day or the rate of failure or loss. All animals will die eventually, which is an illustration of mortality. The amount of high school pupils who do not graduate is one illustration of mortality.
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1. Living things have ____ an increase in size.
2. Living things have a _____
to things happening to them.
3. Living things are made of ____.
4. Living things have _____
they need and process energy.
5. Living things can ______ or make more of their type.
6. Living things can _____ changes in the environment.
to
7. Living things have ______, they control their inner chemistry and processes.
8. Living things as a species _____
over hundreds of generations.
9. Living things change as they age, this is called _____.
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19. What are the components of a chemical reaction?
Answer:
Product and reactants
Explanation:
hope this helped you.
Dna structure plays a role in eukaryotic gene expression by:_____.
Answer:
Dna structure plays a role in eukaryotic gene expression by following different ways:
Methylating areas known as cg islands to silence them. Additionally, it can stop signaling molecules from efficiently preventing gene expression.
A single of the 2 X chromosomes gets randomly and irreversibly immobilized in cells apart from egg cells very early in female embryogenesis. The term "X-inactivation/ lyonization" refers to this process. Because of X-inactivation, every body cell inside a female has one functioning replica of the X chromosome, just as in men.
The lysine sites throughout the N-terminal tail of the nucleosome that emerge from the core of histone are also acetylated as well as deacetylated by that of the procedure known as histone acetylation or we can also say deacetylation in order to regulate gene expression.
The condensin complex, amongst many other proteins, mediates chromosomal condensation, which is required to keep chromosomes from becoming intertwined throughout chromosome segregation.
All the above highlighted lines are the different ways which play important role in gene expression.
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What is the independent variable shown on this graph?
O Only flow time (s) is the independent variable.
O Only temperature ("C) is the independent variable.
Both flow time (s) and temperature ("C) are
independent variables.
The independent variable shown on this graph is option(b)i.e, Only temperature ("C).
Typically, the horizontal axis is used to indicate the independent variable. Temperature (°C) is labeled on the graph's horizontal axis, making it the independent variable. The vertical axis displays the dependent variable. It is Flow time in the graph (s). The dependent variable is determined by or explained by the independent variable, which is the input of the function or relation.
So you can see from the graph that the flow time, which is measured in seconds, depends on or is determined by the temperature, which is measured in degrees Celsius. The slope of the trend line is a measurement of the average change in the dependent variable for each unit change in the independent variable. The slope of the graph is calculated by dividing the temperature change by the flow time variation.
An independent variable's significance is a measurement of how much the network's model-predicted value varies for various values of the independent variable. Simply dividing the importance values by the largest significance values and expressing the result as a percentage is normalized importance.
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drag the correct description into each white box to show your understanding of the five is of microbiology.
The Microbiology Sector is responsible for the cultivation, isolation and identification of bacteria, fungi and yeasts that cause diseases in animals.
What is done in the microbiology laboratory?The microbiology laboratory acts to isolate the microorganisms and is designated for studies, such as for and extension. Therefore, it must contain equipment with technology, in addition to the support of essential technique for the work and quality materials.
With this information, we can conclude that equipment widely used in microbiology laboratories is the optical microscope, a device that allows professionals in the field to visualize atoms and cells that are invisible to the eye with greater clarity.
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Plants absorb energy from sunlight and convert it to chemical energy to make food. which characteristic of life does this behavior best illustrate?
Answer:
Photosynthesis
Explanation:
When plants absorb energy from the sun and convert it into energy to make food, this is called photosynthesis.
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:
You suspect that deer are restricting the distribution of a tree species by preferentially eating the seedlings of the tree. How might you test this hypothesis?
To see if designated tree seedling plots can survive in the absence of deer, fences can be built around them. If not, one can infer that deer restrict the distribution of a tree species by favorably consuming the tree's seedlings.
Two populations of the same species or breeding groups are divided by a physical barrier, such as a mountain or a body of water. Populations may eventually diverge into different species as a result of geographic isolation due to adaptive radiation.An important ecological phenomenon that can affect population dynamics, the evolution of predators, and the reproductive success of specific plants is species predation on seeds.An experiment can be used to draw the conclusion that putting up a barrier between the deer and the seedlings will deter them from eating them.So, if the seedlings develop normally, one can draw the conclusion that deer were the main factor in the seedlings' failure to thrive.Learn more about the species distribution with the help of the given link:
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all of the following are nutrients that provide energy (kilolcalories) except: carbohydrades, water, fats, protiens
The nutrients like carbohydrates, fats and proteins provide energy whereas water does not.
Carbohydrates are the macromolecules that are polyhydroxy ketones or aldehydes. They can be of three types: monosaccharides, disaccharides and polysaccharides. The examples of carbohydrates are: glucose, sucrose, starch, etc. They have various functions like structural or in providing energy.
Proteins are the polymers of amino acids. They are the main body-building and repair components. The amino acids are joined together using peptide bonds to form a protein. The proteins have various levels of structure. These are: primary, secondary, tertiary and quaternary. Proteins also have enzymatic functions.
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Researchers observed that the crows only gather and drop the largest whelks. What are some reasons crows might favor larger whelks?
If the larger whelks are simpler to crack open, it is obvious that the crows choose the larger ones as they require fewer drops per whelk and get more energy from doing so.
When a group of crows congregates, what does it mean?People appear to equate these corvids with death and gloom since a gathering of crows is referred to as a murder. Crows, however, are highly gregarious animals, and during this time of year they frequently congregate in large groups for warmth, protection, and sometimes even amusing discussion.
Crows are typically seen as a bad omen, and in certain traditions, they represent death. They also stand in for the vast mysteries of life.
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the large surface area in the gut directly facilitates . the large surface area in the gut directly facilitates . secretion absorption filtration temperature regulation
The large surface area in the gut directly facilitates is absorption
Why does digestion require a vast surface area?As surface area grows, so does the pace of digestion. The process that facilitates and supports the quantity of digestive enzymes provides an explanation for this. And it is one of the enzymes types whose activity is enhanced on bigger surfaces.
Microvilli, which resemble tiny hairlike structures, are abundantly present in the villi's cells. Each cell can receive more nutrients as a result of this increase in cell surface area.
The villi and microvilli enhance the surface area available for nutrient absorption in the intestinal lumen.
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What organelle modifies polypeptides so they can fold into fully functional proteins?
The organelle that is able to modify polypeptides so they can fold into fully functional proteins is called the rough endoplasmic reticulum (RER).
What is the rough endoplasmic reticulum (RER)?The rough endoplasmic reticulum (RER) is an organelle that forms part of the endomembrane systems which serve to process and transport lipids and proteins to their final destination inside the cell or outside the cell.
In conclusion, the organelle that is able to modify polypeptides so they can fold into fully functional proteins is called the rough endoplasmic reticulum (RER).
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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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When your first child is six months old, you hang a tire swing from a tree limb in your backyard. The bottom of the tire is six inches from the ground. When your child graduates college 22 years later, the tree is now ten feet taller than it was when you hung the tire swing. Neglecting soil erosion and any increased thickness of the limb, how far from the ground is the bottom of the tire?.
(a) Six inches, approximately is how far from the ground is the bottom of the tire neglecting soil erosion and any increased thickness of the limb even if your child graduates college 22 years later and the tree is now ten feet taller than it was when you hung the tire swing.
It has the same distance since tress grow from the top. Trees develop in the opposite direction—from the top. Meristems are patches formed by specialized cells at the tips of each tree shoot, including the main leader. These meristems are the places where a tree increases its height and lengthens its limbs. The meristems would be eliminated if a tree were chopped like grass, preventing the tree from becoming higher or longer.
However, as trees grow from their distal ends, the branches that emerge from the trunk can never grow higher. A branch that grows 3 meters from the ground today will remain there the next year.
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Question correction:
When your first child is six months old, you hang a tire swing from a tree limb in your backyard. The bottom of the tire is six inches from the ground. When your child graduates college 22 years later, the tree is now ten feet taller than it was when you hung the tire swing.
a. six inches, approximately
b. ten feet, six inches
c. somewhere in between A and B
hich of the following pieces of physical evidence was discovered as a mark of identification during the 1800s? fingerprinting fingerprinting eye-witness ids eye-witness ids dna testing dna testing lie-detector test lie-detector test
The piece of physical evidence that was discovered as a mark of identification during the 1800s was fingerprinting.
A physical evidence can be defined as any object or proof obtained from the site of crime. The things that can act as physical objects are: any object, fingerprints, hairs, footprints, etc.
Fingerprinting is the process of identification of a person's impressions of the hand or fingers specifically. This method is highly used in forensics to find out the criminals. For this, the fingerprints obtained from the site are compared with the suspects and matched. Fingerprinting can be a reliable process as no two persons in the world can have same fingerprints.
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Neuroimaging studies show that patients with schizophrenia often have enlarged ________. hypothalamus hypothalamus ventricles ventricles thalamus thalamus temporal lobes temporal lobes
Neuroimaging studies show that patients with schizophrenia often have enlarged ventricles.
What is Neuroimaging?The area of medical imaging known as neuroimaging focuses on the brain. Neuroimaging researches the following in addition to determining disease status and evaluating brain health:
the brain's operation.effects of various brain functions.NCPRC employs a method of neuroimaging known as magnetic resonance spectroscopy (MRS). In contrast to magnetic resonance imaging (MRI), which only offers data on the brain's anatomy, MRS in our investigations enables researchers to gather biochemical information about the brain.
Similar to a radio receiver, MRS equipment may be set to pick up signals from various chemical nuclei in the brain. We examine the brain chemistry that could be related to teenage mood problems using proton and phosphorus coils.
Therefore, neuroimaging studies show that patients with schizophrenia often have enlarged ventricles.
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when performing a single-cell recording, researchers typically carefully insert a thin electrode through the cell membrane into the interior of a neuron. group of answer choices true false
The statement when performing a single-cell recording, researchers typically carefully insert a thin electrode through the cell membrane into the interior of a neuron is false.
What is single-cell recording?The expression single-cell recording makes reference to a procedure employed in neurophysiology in order to determine any relative modification in the potential (i.e. the voltage) or intensity (i.e., electrical current) in the nerve cells or neurons.
In conclusion, the statement when performing a single-cell recording, researchers typically carefully insert a thin electrode through the cell membrane into the interior of a neuron is false.
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A single-stranded polymer whose monomers contain the sugar ribose and the nitrogenous base uracil:_______.
RNA is a single-stranded polymer whose monomers contain the sugar ribose and the nitrogenous base uracil.
All live cells contain RNA, which is necessary for the cell to function properly. The sugar ribose and the nitrogenous base uracil are found in the monomers of RNA, a single-stranded polymer. In addition to being involved in the control of gene expression, RNA is essential for the regulation of cell growth and development.
RNA is a component of cellular nuclei and is crucial for the expression of genes. RNA is also involved in the production of proteins. RNA is a molecule of cellular nuclei and is crucial for the expression of genes. RNA is also involved in the production of proteins.
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About 60% to 80% of the volume of most living cells consists of organic compounds. True or false?.
Answer:
False
Explanation:
Cell organelles and water make up most of a living cell's volume.
What is the difference between a protein kinase and a second messenger? Can both operate in the same signal transduction pathway?
Protein kinases are enzymes; second messengers are not necessarily enzymes; Yes, they can operate in the same pathway
Protein kinase is a critical enzyme in many fundamental cellular metabolic processes. They transfer the phosphate group from ATP to the substrate, producing the phosphorylated substrate. This phosphorylation may result in substrate activation, inactivation, destruction, or protection against destruction.
Second messengers are tiny molecules that are smaller than protein kinase. Second messengers are less stable than kinases, yet they are effective enough to attach their target molecules and either activate or deactivate them. Second messengers are usually eliminated after their function, although kinases are not always.
Yes, kinases and second messengers can both function in the same signalling pathway. For example, in G Protein Coupled Receptors (GPCRs), the second messenger cAMP binds to Protein Kinase A, resulting in Protein Kinase A activation.
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6. information stored in inorganic molecules is used to direct the synthesis of cellular components.
The statement is false that information stored in inorganic molecules is used to direct the synthesis of cellular components.
Cellular components are various structures and organelles that the cell is made up of. These are the nucleus, plasma membrane, mitochondria, etc. All these components are made up of organic molecules like carbohydrates, proteins, nucleic acids, lipids, etc.
Inorganic molecules are those that do not contain the carbon atom. The inorganic components can be majorly seen in the non-living things in the environment. However, presence of inorganic molecules in the living organisms is rare. The example of inorganic molecules are: carbon monoxide, carbon dioxide, carbides, salts, etc.
The question is incomplete, the complete question is:
Information stored in inorganic molecules is used to direct the synthesis of cellular components. Is the statement true or false ?
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which polymers are composed of amino acids? view available hint(s)for part a which polymers are composed of amino acids? proteins monomers carbohydrates nucleic acids
The polymers that are composed of amino acids are proteins, while nucleic acids are composed of nucleotides and carbohydrates are composed of monosaccharides.
What are proteins?Proteins can be considered biopolymers because they are composed of linear sequences of amino acids such as for example histidine, glutamic acid, arginine, etc.
In a protein, these building blocks (amino acids) are linked through peptide bonds to form polypeptide chains.
Biomolecules such as proteins, nucleic acids and carbohydrates are considered biological polymers because they are composed of linked subunits in linear order, which is required to form macromolecular structures.
In conclusion, the polymers that are composed of amino acids are proteins, while nucleic acids are composed of nucleotides and carbohydrates are composed of monosaccharides.
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What are some variables that weren't controlled for in this experiment that could be explored in a follow-up study?
The correct answer is Age and gender are two factors that were not taken into account in this study and may be further examined in future work.
Researchers looked at the amounts of ACTH in 20 people's bodies as they woke up from sleep. The researchers employed a short, long, and one surprise approach to establish the mean plasma ACTH level in the body.
The researchers analyzed samples from when subjects were awakened and samples taken 30 minutes later to ascertain the change in ACTH levels post-waking.
ADH enters the circulation and then travels throughout the body. Corticotropin-releasing hormone (CRH) and cortisol from the adrenal glands regulate the generation of ACTH.
Cortisol levels increase as a result of adrenocorticotropic hormone overproduction.
The researchers controlled time as one of the parameters in the experiment because the level of ACTH is determined by the individual's time of awakening. There were certain variables in the experiment, though, that were totally independent.
Age and gender were the only two that were not under control, in part because it is irrelevant what gender a person is as long as they are in good health and fall within a certain age range.
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you are a scientist who has been sent on a special mission to study plants and animals in south asia! your destination is the city of indore in india. you need to travel to 22°n latitude and 75°e longitude. which star should you travel to?
In the autonomic nervous system, neurotransmitter activation of its receptor terminates when the neurotransmitter is broken down by enzymes or when it diffuses away. Which other mechanism leads to termination of neurotransmitter activity?.
Other than the autonomic nervous system, active transport into surrounding cells leads to terminations of neurotransmitter activity.
The ANS is responsible for the termination of the neurotransmitter activations which are held by enzymes. The peripheral nervous system's autonomic nervous system (ANS), originally known as the vegetative nervous system (VNS), provides smooth muscle and glands, which in turn affects how internal organs work.
The autonomic nervous system is a mechanism that governs body processes including heart rate, digestion, respiration, pupillary response, urine, and sexual arousal mostly subconsciously. The fundamental mechanism in charge of the fight-or-flight response is this system. Through the brain stem, the spinal cord, and the organs, integrated reflexes control the autonomic nervous system.
Control of breathing, cardiac regulation (the cardiac control center), vasomotor activity (the vasomotor center), and other reflex acts including coughing, sneezing, swallowing, and vomiting are all examples of autonomic activities.
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generally, the effects of parasympathetic and sympathetic innervation of the same organ are , opposing each other to produce different results.
Antagonistic effects of the same organ are observed when parasympathetic and sympathetic innervation is present in it.
The parasympathetic division and the sympathetic division are two diametrically opposed divisions of the autonomic nervous system that control homeostasis. Most of the body's organs are innervated by both the sympathetic and parasympathetic systems, which work against one another to maintain normal physiology including blood pressure, blood oxygen levels, and nutrition levels. Each scenario necessitates a different level of effort on the part of a certain organ to maintain homeostasis. Additionally, certain organs must function in order to get the body ready for potential future circumstances. The autonomic nervous system controls each and every one of these processes.
The autonomic nervous system prepares the body for stressful conditions is the sympathetic division. This mechanism is frequently referred to as "fight or flight." Among the many impacts of this system are elevated heart rate, constricted blood arteries to the skin and viscera (raising blood supply to the muscles), enlarging pupils, and reduced salivation. All of these reactions encourage surviving in a hazardous circumstance.
The parasympathetic branch of the autonomic nervous system, sometimes known as the "rest and digest" system, gets the body ready for settings that allow for rest. The parasympathetic nervous system slows heart rate, increases gastrointestinal motility, and increases salivation, among other things. By conserving nutrients, these reactions aid the body's ability to recuperate and become ready for stressful conditions.
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Which organ system regulates blood volume by altering the amount of fluid released in urine?
The organ system regulates blood volume by altering the amount of fluid released is urinary system.
What is the urinary system?
The kidneys discharge fluid waste in the form of urine, which is produced, stored, and eliminated by the urinary system, also known as the renal system. By filtering toxins and excess water from blood, the kidneys produce urine. The bladder is filled with urine after it travels from the kidneys through two tiny tubes known as ureters. A person urinates through the urethra to expel waste when the bladder is full.
The urinary system is prone to a wide range of infections as well as other issues, such as obstructions and injury. A urologist or another medical professional with expertise in the renal system can treat them.
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