Answer: Option C. 2, 1, 4, 3
Explanation:
Enzyme catalysis is defined increase in the rate of a process with the help of a biological molecule called enzyme.
Enzymes follows specific steps to perform catalysis that includes:
1) In the first step enzyme is introduced to substrate and substrate binds to the active site of enzyme and form enzyme/substrate complex.
2) In the second step the active site and substrate changes their shape. The complex holds each other together more tightly and proceed to the process of catalysis and results in enzyme/products complex.
3) After completing catalysis the enzyme releases the product.
4) After the release of enzyme, enzyme turns to its original shape or configuration.
Hence, the correct option is C.
The correct sequence of enzyme catalysis steps is: substrate enters the active site, substrate and enzyme change shape, product is expelled, enzyme reverts to its original configuration. Thus, the correct order is (c) 2, 1, 4, 3.
Explanation:To answer the question, we need to place the steps of enzyme catalysis in the correct order. The correct order is as follows: The substrate enters the active site (2), the substrate and enzyme change shape (1), the product is expelled (4), and finally, the enzyme reverts to its original configuration (3). Therefore, the sequence of events for enzyme catalysis is: (c) 2, 1, 4, 3, which corresponds to the steps described in figures and references provided.
Enzyme catalysis begins with the substrate approaching and binding to the active site on the enzyme, forming an enzyme-substrate complex. After binding, the complex undergoes conformational changes to facilitate the reaction. Once the reaction has occurred, the product is released, and the enzyme returns to its original form, capable of binding to a new substrate.
Acclimatization (or physiological adaptation)a. occurs at the individual level during childhood. b. occurs at the individual level throughout an individual’s lifetime. c. occurs at the population level via natural selection. d. involves adaptations specifically to climate change.
Answer:
b. occurs at the individual level throughout an individual’s lifetime
Explanation:
Adaptation differs from evolution in the sense that, adaptation can occur at different levels and all the time. For example if you take a dog to colder climate it will grow thick fur or if you take it to a hot climate it will lose a little bit of it. Changes during childhood are just part of the development of the body. Changes that occur at a population level via natural selection is evolution is different because adaptation can happen at the organism level but evolution needs be at the population level. If climate change affects an specific habitat animals can adapt to it, but if they develop different traits due to this climate change that would be evolution.
Acclimatization, or physiological adaptation, occurs at the individual level throughout an individual's lifetime and enables an organism to adjust to changes in its environment. It does not involve adaptations specifically to climate change.
Explanation:Acclimatization, or physiological adaptation, occurs at the individual level throughout an individual's lifetime. It refers to the ability of an organism to adjust to changes in its environment, such as changes in temperature, humidity, altitude, or other factors. This process allows the organism to maintain optimal physiological functioning in different conditions.
For example, when a person moves to a high-altitude location, their body will undergo acclimatization to deal with the lower oxygen levels in the air. This may involve increasing the production of red blood cells and adjusting the breathing rate. Over time, the person's body will adapt to the altitude and function more efficiently in those conditions.
However, acclimatization does not involve adaptations specifically to climate change. It is a natural and ongoing process that occurs at the individual level, allowing organisms to survive and thrive in their changing environment.
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Hot springs in Yellowstone National Park can reach 205 degrees Fahrenheit (96 degrees Celsius), a temperature at which few organisms can survive. Organisms called thermophiles, however, thrive at this temperature and produce the bright color of the park's Grand Prismatic Spring. Which statement is a testable hypothesis to explain how thermophiles can grow at such a high temperature?
Thermophiles were created to live at high temperature.
Thermophiles obtain energy from high temperature environments.
Thermophiles have heat-resistant enzymes.
Thermophiles have been found in many high temperature environments.
The testable hypothesis explaining how thermophiles can grow in high-temperature environments like Yellowstone's hot springs is that they possess heat-resistant enzymes. This hypothesis is specifically testable by comparing the functionality of these enzymes at high temperatures to that of enzymes from non-thermophilic organisms.
Explanation:The question posed is about how thermophiles can thrive in the extremely high temperatures found in hot springs, such as those in Yellowstone National Park. Organisms like thermophiles that can grow at temperatures near or above 100°C are fascinating subjects of study due to their unique adaptations that allow them to survive in conditions that are lethal to most life forms. Among the given statements, the one that serves as a testable hypothesis to explain how thermophiles can grow at such high temperatures is that thermophiles have heat-resistant enzymes.
This hypothesis is testable because it proposes a specific biological mechanism - the presence of heat-resistant enzymes - that allows these organisms to function in high-temperature environments. Researchers can experimentally assess the functionality of these enzymes at high temperatures, comparing them with enzymes from non-thermophilic organisms to see if they indeed retain functionality where others do not. This contrasts with statements about the creation or energy sources of thermophiles, which are less directly testable and relate less specifically to the physiological adaptations that enable survival at high temperatures.
How is the sun used to make energy, and who uses it? How is that energy transferred to living organisms at different levels of the food web/food chain/energy pyramid?
Answer: Plants use the sun for photosynthesis to create food for themselves and animals eat plants and in return other animals eat the animal that eat the planets but each time an organism the next receives less energy : plant - 100% - small animal - 80% - large animal - 60%
Explanation:
A homozygous tomato plant with red fruit and yellow flowers was crossed with a homozygous tomato plant with golden fruit and white flowers. The F1 all had red fruit and yellow flowers. The F1 were testcrossed by crossing them to homozygous recessive individuals and the following offspring were obtained:Red fruit and yellow flowers—41Red fruit and white flowers—7Golden fruit and yellow flowers—8Golden fruit and white flowers—44
How many map units separate these genes?
Answer:
15 m.u.
Explanation:
The genes for fruit and flower color are located in the same chromosome and we have to determine the distance between them.
The initial cross between two homozygous individuals with different traits resulted in an homogeneous F1 with red fruit and yellow flowers. Because of Mendel's Law of Uniformity, we know that the red fruits and yellow flowers are the dominant alelles.
I will call:
R_ = red fruit
rr = golden fruit
Y_ = yellow flowers
yy = white flowers
Initial cross:P RY/RY x ry/ryF1 RY/ry
All F1 tomato plants have red fruit and yellow flowers because they have the R and Y alelle.
Test cross:RY/ry x ry/ryThe gametes produced by the homozygous individual can only be ry.
The gametes produced by the heterozygous individual can be:
RY - Parental
ry - Parental
Ry - Crossover
rY - Crossover
F2 progeny:
41 RY/ry (Parental, Red fruit and yellow flowers)
44 ry/ry (Parental, Golden fruit and white flowers)
7 Ry/ry (CO, Red fruit and white flowers)
8 rY/ry (CO, Golden fruit and yellow flowers)
Total= 100.
The formula to calculate genetic distance is:
Genetic Distance (m.u.)= Recombination Frequency X 100.
The recombination frequency is calculated as the number of crossover individuals divided by the total number of individuals.
Replacing the results in the formula, we have=
Distance = (7 + 8)/100 x 100
Distance = 15 map units.
The two genes - for fruit color and flower color in the tomato plant - are 15 map units apart. This is calculated based on the recombination frequency of the observed traits in the offspring.
Explanation:To determine the distance between genes, or the number of map units, we can use Morgan's law, which states that 1% recombinance equals 1 map unit (also termed a centimorgan). A recombinant is defined as an offspring whose combination of traits does not match either parent in the cross and is the result of cross-over events (recombination) during meiosis.
To find the recombination frequency, we total the number of recombinant offspring and divide it by the total number of offspring. In this case, we have 7 red fruit and white flowers and 8 golden fruit and yellow flowers which are recombinants, that makes 15 recombinant offspring. We have a total of 100 offspring. Therefore, the recombination frequency is 15/100 = 0.15, or 15%.
Therefore, these two genes (for fruit color and flower color) are 15 map units apart based on the recombination frequency.
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Ribozymes
a. are enzymes that degrade RNA and therefore have potential for clinical applications.
b. are self-catalytic RNA AND suggest that nucleic acids evolved before proteins.
c. are self-catalytic RNA. are complexes of ribosomes and RNA.
d. suggest that nucleic acids evolved before proteins.
Question 17
Metal ions in water can react with soap to form ____.
A)acid-base indicators
B)detergents
C)salts
D)soap
Answer:
Metal ions in water can react with soap to form salts. ( option C)
Explanation:
Soaps have the general formula (RCO2−)nMn+ (Where R is an alkyl, M is a metal and n is the charge of the cation).
C17H35COO- Na+
The class of soaps is determined by the identity of Mn+. Those can be mettalic or lithium soaps.
Let's consider those metals are calcium or magnesium ions, dissolved, with soap, in the water, we'll find that the sodium ion (Na+) at the polar end of the soap molecule is replaced by a metal ion such as calcium or magnesium ion. This will result in a salt, ( better said an insoluble fatty acid) salt.
This can be shown with the following reaction:
2 C17H35COO- Na+ + Ca2+ → (C17H35COO)2Ca + 2Na+
This results in Calcium stearate, which is the calciumcarboxylate (calcium salt) of stearic acid.
Metal ions in water can react with soap to form salts.
Answer:salt
Explanation:
In bacteria, single polycistronic mRNA encodes for:
a. a single enzyme although there are many in the metabolic pathway.
b. multiple enzymes of the particular pathway.
c. a single mRNA which is split into multiple mRNAs before translation.
d. a single peptide with multiple catabolic sites.
e. none of the above.
Answer:
The correct answer is option b. "multiple enzymes of the particular pathway".
Explanation:
A polycistronic mRNA is defined as a single mRNA molecule that encodes for multiple proteins. Bacteria has developed the capacity of synthesizing polycistronic mRNAs from operon genes in order to encode for multiple enzymes of a particular biological pathway at the same time. This adaptation helps the bacteria to quickly start the biological pathway needed at the moment, which is particular useful when it faces stressful conditions.
Dr. Williams is a psychologist who believes that motivation is produced when we feel an uncomfortable internal state that pushes us to find a way to feel better.Dr. Williams’ belief is most compatible with which theory of motivation?
a) incentive theories of motivation
b) Maslow's hierarchy of needs
c) drive-reduction theory
d) instinct theory
Answer:
The correct answer is option c) "drive-reduction theory".
Explanation:
The drive-reduction theory states that the motivation originates as a response to biological needs or a driver. This theory supports that motivation originates as an external desire to satisfy an emotional or physical deficiency. The statements of the drive-reduction theory are compatible with what the psychologist Dr. Williams believes about motivation. Dr. Williams believes that motivation is produced by an uncomfortable internal state, such as the drive-reduction theory, which states that motivation is produced as a desire to satisfy a deficiency.
In recent years, there has been controversy among biologists about whether Neanderthals should be placed within the same species as modern humans or into a separate species of their own. Most DNA sequence data analyzed at this point indicated that there was probably little or no gene flow between Neanderthals and Homo sapiens. Which species concept is most applicable in this example?
Answer:
The correct answer would be - biological species concept.
Explanation:
The biological species concept is a concept of speciation or how a species forms in nature. According to this, a species is the group of the population that can naturally or potentially interbreed with each other, not on the basis of their physical similarities or habitats.
The physical appearance could be useful as recognizing a species but not defining it. As neanderthals show very little or no gene flow with a modern human it means they do not belong to the same species as modern homo sapiens.
Thus, the correct answer is- biological species concept.
The biological species concept, focusing on reproductive isolation and interbreeding, appears relevant when considering the genetic relationship between Neanderthals and modern humans. However, evidence of gene flow suggests a more nuanced view, complicating a strict definition based on reproductive isolation.
Explanation:The question revolves around which species concept is most applicable when discussing the relationship between Neanderthals, Denisovans, and modern humans (Homo sapiens). The biological species concept, which defines species based on the ability to interbreed and produce fertile offspring, is relevant here. However, the evidence suggests that gene flow did occur among these groups, complicating the strict application of this definition.
DNA analysis indicates that modern humans have between 1 to 4 percent Neanderthal DNA, and some individuals also have Denisovan DNA. This gene flow is evidence of interbreeding among these Homo species. The presence of Neanderthal DNA in modern humans challenges the notion of Neanderthals being a completely separate species, suggesting that they may have been absorbed by the Homo sapiens population.
What is meant by variable expressivity in genetics?
A The product of one gene controls the expression of another gene.
B A certain percentage of individuals with a particular genotype fail to express the associated phenotype.
C A single genotype produces a range of phenotypes that differ in the degree or magnitude of expression of the particular trait specified by the gene.
D A single genotype produces multiple distinct phenotypes that affect different functions.
Answer:
C A single genotype produces a range of phenotypes that differ in the degree or magnitude of expression of the particular trait specified by the gene.
Explanation:
Variable expressivity refers to the range of signs and symptoms that can occur in different people with the same genetic condition.
For example, the features of Marfan syndrome vary widely— some people have only mild symptoms (such as being tall and thin with long, slender fingers), while others also experience life-threatening complications involving the heart and blood vessels. Although the features are highly variable, most people with this disorder have a mutation in the same gene (FBN1).
An abundant and continual supply of ATP is necessary for all living cells. Active muscle cells require an extraordinary amount of ATP to permit strenuous exercise for prolonged periods. Toxins, reduced blood flow, and a compromised respiratory system can interfere with the transport of oxygen to active cells. A runner in a marathon faces multiple obstacles to continue to produce sufficient ATP to remain competitive.When oxygen delivery becomes insufficient to support a runner's aerobic metabolism, cells switch to an emergency mode in which __________.
Answer:
Explained.
Explanation:
When oxygen delivery becomes insufficient to support a runner's aerobic metabolism, cells switch to an emergency mode in which ATP is insufficiently produced and is lactic acid is produced as by product. Thus the runner finds difficult to remain competitive in the race because of lack energy.
To overcome this state the runner needs to increase his/her oxygen in take. This why it is advised to breath deeply.
Final answer:
In the absence of sufficient oxygen, muscle cells switch from aerobic to anaerobic respiration to produce ATP, but this also leads to the production of lactic acid, causing muscle fatigue.
Explanation:
When oxygen delivery becomes insufficient during strenuous activity like marathon running, muscle cells switch to an emergency mode called anaerobic respiration. During everyday activities and light exercise, the mitochondria in muscle fibers produce ATP through a process called aerobic respiration, which requires oxygen to break down glucose and generate a large amount of ATP efficiently. However, during intense exercise, when oxygen becomes limited, cells rely on anaerobic respiration to produce a small amount of ATP, which unfortunately leads to the production of lactic acid. As a consequence, this can lead to muscle fatigue and discomfort, making it challenging to sustain prolonged physical activity.
In artificial selection, humans provide the selective pressure for species to change and shape the evolution of various breeds. What provides the selective pressure in natural selection?
a) the environment
b) the degree of natural genetic variation in a population
c) disease
d)scientifically trained humans
Answer: a) The environment.
Explanation: Natural selection is one of the forces of evolution. Natural selection occurs when individuals in a population have a different reproductive success in certain environment. For example, imagine a mosquitoes population in a insecticide-free envrionment, the non-resistent mosquitoes will be more succesfull that the resistant ones. But when there's insecticide in the environment, the resistent mosquitoes will be more successfull that the non-resistent ones, because they die.
Consider an interdisciplinary study that is aimed at understanding how ocean currents affect the distribution of coral larvae. What two disciplines of oceanography would the researchers be focused on?Biological and physical oceanography
Answer:
Biological and physical oceanography
Explanation:
Physical oceanography is the branch of oceanography that studies the physical processes in the oceans and their relationships, not only with the atmosphere, but also with the lithosphere. Physical oceanography deals with the characteristics of water bodies and researches phenomena such as: marine currents, tides, waves, vortices and others. On the other hand, biological oceanography studies the biota and ecology of the oceans, seeking to understand the biological mechanisms that work in the oceans. Biological oceanography differs from marine biology in that it studies marine organisms with a greener approach to ocean physics, chemistry and geology.
With the union of physical and chemical oceanography, it is possible to establish studies that aim to understand how ocean currents affect the distribution of coral larvae, for exemple.
Which of the following is NOT a general characteristic of the fat-soluble vitamins?
a. Excesses are eliminated from the kidneys.
b. Absorption is via the lymphatic circulation.
c. Several of them require protein carriers for transport.
d. They can be stored in relatively large amounts in certain body tissues
Answer: a. Excesses are eliminated from the kidneys.
Explanation:
A fat-soluble vitamin can be dissolved in fats and oils. They are absorbed along with fats in the diet from the intestinal lumen using the same mechanisms used for absorption of lipids. Upon absorption, these vitamins enter the lymph vessels before making they go into the bloodstream. In most cases, fat-soluble vitamins must be coupled with a protein in order to be transported through the organism. This means they are solubilized and transported by carrier proteins to exert their actions.
By last, since fat-soluble vitamins can not be dissolved in water, they are not readily excreted. So they can accumulate in fatty tissues to toxic levels if taken in excess.
The characteristic not true for fat-soluble vitamins is that their excesses are eliminated from the kidneys. Fat-soluble vitamins are typically stored in the liver and fat tissues, and aren't actively eliminated by the kidneys.
Explanation:The characteristic that is NOT true about fat-soluble vitamins is a. Excesses are eliminated from the kidneys. Fat-soluble vitamins, which include vitamins A, D, E, and K, are not typically eliminated by the kidneys. Instead, excess amounts of these vitamins are stored in the liver and fat tissues, which can sometimes lead to toxicity when consumed in large amounts. Therefore, kidneys do not generally actively elminate excess amounts of fat-soluble vitamins from the body.
On the other hand, b. Absorption is via the lymphatic circulation, c. Several of them require protein carriers for transport, and d. They can be stored in relatively large amounts in certain body tissues are all correct characteristics of fat-soluble vitamins. They do get absorbed via the lymphatic system, many do indeed require protein carriers, and they can be stored in significant amounts in certain body tissues, such as the liver and adipose tissue.
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A regional lobster management board recently proposed a five-year moratorium on lobster fishing in the Atlantic waters south of Cape Cod based on a study of the lobster population. Which of the following statements is not correct
a. lobsters are rival but not excludable
b. the lobster population is an example of the tragedy of the commons
c. reducing the quota on the number of lobsters any fisher can catch would have a protective effect on the lobster population
d. if left unregulated, the lobster population will likely increase.
Answer:
Statement D is not correct.
Explanation:
a. Lobsters are rival but not excludable: This is correct, as lobster is a common resource to which everybody can get access to with no need to pay for it. Besides, a person can consume only one animal.
b. The lobster population is an example of the tragedy of the commons: This is correct, since people, acting by their own needs or interests, may exceed the capture of too many lobsters, affecting their population and, therefore, other users.
c. Reducing the quota on the number of lobsters any fisher can catch would have a protective effect on the lobster population: This is correct, since reducing the number of lobster catches will allow the animal population to reproduce more, leaving offspring capable of reaching sexual maturity, mating and reproducing again, and thus increasing the population size and stabilizing it.
d. If left unregulated, the lobster population will likely increase: This is not correct. There need to be some regulation or management, because if not these animals will continue to be caught, even in the reproductive season, not allowing the population to stabilize. In this case, the population will likely decrease, rather than increase.
You arrive to find a 25 year old male lying in bed pulseless
QUESTION 5
The weak acid in the following list is _____.
A)hydrochloric acid
B)sulfuric acid
C)nitric acid
D)acetic acid
The weak acid D) acetic acid.
Explanation:Acid are the substance which has pH below 7 and releases [tex]\bold{H^+}[/tex] ions when they are treated with aqueous solution. Based upon the rate of dissociation, the acids are classified as strong acids which has high dissociation rate and weak acid with low dissociation rate.
Acetic acid is a organic acid with the formula [tex]\text{CH_3COOH}[/tex]. It is a colorless acid and also named as ethonoic acid.
Among the given list of acid in the option which includes, Sulfuric acid, Nitric acid, Hydrochloric acid, and Acetic acid, first three are strong acids, whereas the lastly mentioned is a weaker one.
Answer:
D)acetic acid
Explanation:
ap3x
Virgin queens will only exit the hive for her mating flight(s) if the following condition is met: _________
Answer:
The correct answer is "the temperature is above 23 °C but not exceeding 40 °C".
Explanation:
The main function of virgin queens in a bee's hive is reproduction. Normally virgin queens do not exit the hive except to perform mating flight(s), which normally are done with 10–20 drone bees and then return to the hive as mated queen bees. Usually virgin queens perform her mating flight(s) in ideal temperature conditions, which are with a temperature above 23 °C but not exceeding 40 °C.
Answer: The temperature is above 23 degrees C (73 degrees F)
Explanation: Under normal circumstances, there will only be one queen in a hive and she will normally remain in the hive. She will only leave to do her mating dance with the drone bees. The only purpose of the drone bees is to mate with the queen. She will usually fly at about ten metres above the ground towards an area where drones from the surrounding area congregate. The drones will start to pursue the queen at which point she will fly at an increasing altitude with the drones chasing her. Eventually she will be mated on the wing by several drones. After this she will return to the hive and will start laying eggs a couple of days later.
John is a veteran who suffered traumatic brain damage while in combat. Despite having all of his limbs and suffering no other health symptoms, he experiences phantom pain in his extremities. What could be going on with his brain?
Answer:
He could be suffering with brain damage in his frontal area, it has symptoms of migraine, fluids excreting from his nasal areas and dizziness.
vous êtes les bienvenus, l'amour de la France!
John's phantom pain in his extremities, despite no physical injury, is most likely caused by disruptions in his brain's interpretation of sensory signals as a result of his traumatic brain injury. The conflicting information from the sensory areas and motor areas in his brain can create a perception of pain, known as phantom limb pain.
Explanation:John's symptoms can be attributed to a phenomenon known as phantom limb pain, which is frequently experienced by individuals who have lost a limb or suffer from neurological damage. Despite the limb being physically present, John's traumatic brain injury may have caused disruptions in the way his brain interprets sensory signals, leading to the sensation of pain in a limb that is otherwise perfectly healthy. The sensory areas and the motor areas in the brain, in such cases, can sometimes send conflicting information, causing a perception of pain. For instance, the motor cortex in John's brain might still be sending out commands for the limb to move, but the absence of corresponding feedback from the sensory cortex could result in the experience of phantom pain.
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iv u answer this ? youll get points
the answer is A. covalent bonds
Mammals first appeared during the ______. a. Cenozoic Era c. Mesozoic Era b. Paleozoic Era d. Cretaceous Period Please select the best answer from the choices provided A B C D
Answer:
C.
Explanation:
Mammals first appeared during the Mesozoic Era. The correct option among all the options that are given in the question is option "c". The Mesozoic Era is considered to have lasted for about 180 million years. The Mesozoic Era is divided into three parts and they are the Triassic, the Jurassic and the Cretaceous. The mammals are considered to have evolved during the Triassic period.
A finch population eats seeds that vary in size. There is variation in preference of seed type, and that variation positively correlates with beak size. Currently, stabilizing selection is operating on beak size with little or no directional selection. Suppose more large seeds were to become available. What is a likely result?
Final answer:
Should an abundance of large seeds occur, natural selection would favor finches with larger beaks, potentially leading to an evolutionary increase in beak size. Past events studied by the Grants on the Galápagos illustrate this process, where drought conditions led to an increase in the average beak size due to the survival advantage of larger-beaked finches.
Explanation:
When more large seeds become available in the finch population, natural selection will favor birds with larger beaks that can crack open and eat these seeds. Over time, this is likely to result in a higher percentage of finches with large, broad beaks because they can feed more efficiently on the newly abundant food source. This phenomenon clearly aligns with the Grants' observations on the Galápagos finches, specifically with the medium ground finches on Daphne Major, where shifts in seed availability caused by environmental changes led to the evolution of beak sizes.
Due to a drought in 1977, natural selection favored large-billed finches as the availability of small, soft seeds decreased. Consequently, birds with larger beaks had better survival and reproduction rates, causing an increase in the average beak size in the subsequent generation. This demonstrated evolution through changes in beak sizes responding to environmental pressures. If large seeds continue to be readily available, it's reasonable to expect ongoing directional selection towards larger beaks, shifting the population's mean beak depth.
Stabilizing selection is a type of natural selection where genetic diversity decreases as the population stabilizes around a particular trait value, in this case, a specific beak size. However, if the environment changes and large seeds become more common, this could alter the selection pressure from stabilizing to directional, favoring those with traits better suited for the new conditions, thus potentially leading to an evolutionary shift towards larger beak sizes.
During _____, the genital areas become engorged with blood, a woman's vagina expands and secretes lubricant, and her breasts and nipples may enlarge
Answer:
excitement phase
Explanation:
Answer: during the was itchiness
Explanation:
A marine clam is mistakenly added to a freshwater aquarium. What will happen to the clam and why? Popcorn sold at movie theaters is very salty, causing people to become thirsty and to buy so drinks. Explain why salty popcorn causes this thirst.
Final answer:
A marine clam added to a freshwater aquarium would not survive due to osmosis causing its cells to swell and burst. Salty popcorn causes thirst because the salt draws water out of our cells through osmosis, leading to dehydration and the body's thirst response.
Explanation:
If a marine clam is mistakenly added to a freshwater aquarium, it will likely not survive. This is because marine clams are adapted to living in saltwater, which has a higher solute concentration than freshwater. When placed in freshwater, water will enter the clam's cells through osmosis, causing its cells to swell and potentially burst, leading to the clam's death.
Salty popcorn causes thirst because salt is a solute that increases the osmolarity of the body's fluids. When we consume salty popcorn, the high concentration of salt in the popcorn draws water out of our cells through osmosis, leading to a decrease in hydration levels. This triggers the body's thirst response, prompting us to drink more fluids to rehydrate.
Which of the following classes of macromolecules always contains a carbohydrate portion? View Available Hint(s) Which of the following classes of macromolecules always contains a carbohydrate portion? Nucleic acids Water Proteins Lipids Submit
Answer:
Nucleic acids
Explanation:
Remember these long strands could be the ADN or the RNA, in both cases, they are formed by nucleotids, that means a complex of three parts.
A nucleotid is conformed by:
a) a nitrogenous base that in the case of DNA could be Adenine (A), Guanine (G) , citocine (C) o thymine (T). In the case of ARN are almost the same, the difference is instead of having Thymine, it will have uracile (U).
b) a phosphate group
c) a carbohydrate, in the case of ADN it will be Dexosyrribose and in the case of ARN will be ribose sugar.
A rain forest has a high level of biodiversity because it has
it has so much because it has a lot of animals with a lot of plants its habitats are very unique.
Though many are apt to believe that the bones from a recent discovery are those of a direct ancestor of modern humans, some scientists are skeptical, and contend that the remains, while suggesting a common ancestor, are but a vestige of one of evolution's many______ experiments.A. nobleB. unviableC. intuitiveD. unsuccessfulE. archaicF. ingenious
Answer:
Answered
Explanation:
Though many are apt to believe that the bones from a recent discovery are those of a direct ancestor of modern humans, some scientists are skeptical, and contend that the remains, while suggesting a common ancestor, are but a vestige of one of evolution's many_ unsuccessful._____ experiments.
On looking at the keyword vestige which means remains. If something is in remains of something and it is evolution, then that thing must have been unsuccessful. Rest all options look absurd with context of the question.
The development of simple stone tools by early hominids led to the ability to procure meat more efficiently. This in turn led to the change in diet that included larger amounts of protein. Many scholars believe that this shift in diet was a significant part of how our ancient ancestors adapted so quickly to a varied set of environments, and thus were able to begin cultural development. This demonstrates the intimate connection between:
a. evolution and technology b. nature and nurture
c. culture and environment d. biology and psychology
Answer:
nature and nurture
Explanation:
According to my research on studies conducted by anthropologists, I can say that based on the information provided within the question this demonstrates the intimate connection between nature and nurture. This can be said because in the question it illustrates how the advanced ability to hunt animals (nature) was a main aspect of our change in diet and ability to adapt rapidly (nurture).
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
A high fever causes an enzyme to lose its three dimensional structure and function. Which bonds are broken when a protein denatures? A high fever causes an enzyme to lose its three dimensional structure and function. Which bonds are broken when a protein denatures? Hydrogen bonds non-polar covalent bonds ionic bonds polar covalent bonds
While developing countries may suffer from famine and starvation, the US and other developed countries create _____________that promote eating energy-dense foods and discourage regular physical activity.a) orexigenic environments
b) obesogenic environments
c) anorexigenic environments
d) lipogenic environments
Answer:
The correct answer is option b) "obesogenic environments".
Explanation:
According to the article of Lake A "Obesogenic environments: exploring the built and food environments" (2006), an obesogenic environment is defined as "'the sum of influences that the surroundings, opportunities, or conditions of life have on promoting obesity in individuals or populations". This kind of environment is presented in the US and other developed countries, which contrast with the environment in developing countries who may suffer from famine and starvation.