The role of chlorophyll in the biochemical pathway of photosynthesis is to absorb solar energy, trigger CO2 fixation to produce carbohydrates, and provide energy for the ecosystem as a whole.
What is chlorophyll?Chlorophyll is called the green substance of leaves. Chlorophyll molecules are able to absorb red, blue, and violet light. Until it reflects the yellowish-green color that humans often see. Chlorophyll is needed by the body for photosynthesis in addition to water, carbon dioxide, and light.
Chlorophyll is located in plant chloroplasts, which are tiny structures in plant cells. This is where photosynthesis takes place. The job of chlorophyll in plants is to absorb light, which is usually sunlight. The energy absorbed from light is transferred to two types of energy storage molecules.
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Select the correct answer.
Tim is researching the regenerative property of stem cells as a possible method to treat neurological diseases. His research requires him to grow new nerve cells. Which statement best explains why Tim is using stem cells for this purpose?
A.
Specific genes in a nerve cell’s DNA can be activated to produce new stem cells.
B.
Specific genes in a stem cell’s DNA can be activated to produce new nerve cells.
C.
All genes in a nerve cell’s DNA are activated, so new stem cells are produced each time the cell divides.
D.
All genes in a stem cell’s DNA are activated, so new nerve cells are produced each time the cell divides.
The statement that best explains why Tim is using stem cells for this purpose is option B. Specific genes in a stem cell’s DNA can be activated to produce new nerve cells.
What is stem cell’s DNA?Stem cells have the ability to differentiate into various types of cells, including nerve cells. By activating specific genes in a stem cell's DNA, scientists can direct the stem cell to differentiate into a specific cell type, such as a nerve cell.
Therefore, This is why Tim is using stem cells for his research, as it allows him to grow new nerve cells for potential treatment of neurological diseases.
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The study of heredity and the variation of inherited characteristics.a. Trueb. False
Genetic is the study of heredity and the variation of inherited characteristics is True.
DNA variations within individuals or communities are referred to as genetic variance. Gene sequence differences between members of a species are referred to as genetic variation. There are many genetic variants that appear in the human population, including differences in skin color, hair color, blood type, and dimples.Genetic variety is the existence of variance in gene sequences between different species' individual organisms. Examples of genetic variants seen in the human population include differences in skin tone, hair color, blood type, and dimples. Because inherited DNA varies from person to person, genetic variety allows for individual variances.
complete question:Genetic is the study of heredity and the variation of inherited characteristics.a. Trueb. False.
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How many stomach compartments does a ruminant have?
The rumen, reticulum, omasum, and abomasum are the four sections of a ruminant's stomach. Volatile fatty acids, which are the cow's principal source of energy, are produced by rumen microorganisms after meal is fermented.
Which organ of a ruminant actually serves as its stomach?The four divisions in a ruminant's stomach are the rumen, reticulum, omasum, and abomasum (Van Soest, 1994). In contrast to the abomasum, which is the actual stomach and resembles the non-ruminant stomach in both anatomy and function, the rumen, reticulum, and omasum are where pregastric fermentation and feed breakdown occur.
Are four stomachs present in all ruminants?Two-toed feet and a four-chambered stomach are characteristics of most ruminants. Reduced or occasionally missing are the upper incisors.
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Being poisonous, spicy, or tasty are different ways plants can protect themselves or help their seeds spread. What's another internal structure that helps a plant to survive?
Another internal structure that helps a plant to survive is the xylem to suck up water. The correct option is B.
What are adaptations for survival?Adaptations are structures or features that an organism such as a plant or animal has that help it survives in a specific environment.
There are several forms of adaptation such as:
Structural AdaptationsBehavioral AdaptationPhysiological AdaptationsCoadaptation.For example, being poisonous, spicy, or tasty are different ways plants can protect themselves or help their seeds spread.
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Why do nonpolar compounds tend to have lower melting points and boiling points than polar compounds?.
Because of their weak van der Waals interactions, non-polar molecules have the lowest melting and boiling points.
What accounts for the higher melting points of polar molecules?Polar molecules can be drawn to the positive and negative regions of nearby polar molecules in the same way that they are drawn to the positive and negative plates in an electric field. Polar compounds thus frequently have melting points that are higher than those of nonpolar ones.
Which factor accounts for the high melting and boiling points of polar molecules?The underlying idea is straightforward: the stronger the noncovalent connections between molecules, the more heat energy is needed to separate them. Stronger materials have higher melting and boiling points.
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How do psychiatrists assess patients?
Psychiatrists are medically trained professionals who help diagnose, treat, and prevent mental disorders.
A medical professional who practices psychiatry is known as a psychiatrist and psychiatry is that branch of medicine which majorly focuses on the diagnosis, prevention as well the treatment of a number of mental illnesses or disorders like anxiety disorders, bipolar disorders, depressive disorders, stress disorders etc.
A psychiatrist is a doctor who can perform mental as well as physical examinations on a patient. These examinations are very important to diagnose the disease and also for the prescription of personalized medicine to avoid any side effects. The psychiatrist provides treatment either in the form of non-medicinal assistance like counselling or through medications.
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6) On what structure in the cell are proteins needed for cells functions made?
What was the significance of the radioactive isotopes Hershey and Chase chose?
A. Both sulfur and phosphorus are found in large amounts in DNA.
B. Both sulfur and phosphorus are found in large amounts in proteins.
C. Phosphorus is abundant in DNA, while sulfur is abundant in protein.
D. Phosphorus is abundant in protein, while sulfur is abundant in DNA.
The significance of the radioactive isotopes Hershey and Chase chose is that C. Phosphorus is abundant in DNA, while sulfur is abundant in proteins.
What is the relative importance of the experimental procedure by Hershey and Chase?The relative importance of the experimental procedure by Hershey and Chase is based on the fact that they found which of these biomolecules (i.e. DNA or proteins) represents the genetic material in the organisms which is inherited across generations in order to shape the phenotypic features of the species. This experiment is based on the use of radioactive isotopes that were incorporated into the biomolecules.
Therefore, with this data, we can see that the relative importance of the experimental procedure by Hershey and Chase is founded on the observation that DNA is the genetic material inherited across generations in order to shape traits.
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All of the traits listed for the common ancestor are [missing from/shared by] both groups.
All of the traits listed for the common ancestor are shared by both groups.
What are the traits of common ancestor?The traits of a common ancestor refer to the characteristics and features that are shared by two or more groups of organisms that are believed to have descended from a common ancestor. These traits can include physical characteristics, genetic information, and behavioral patterns. Some examples of traits that might be found in a common ancestor include:
A particular type of skeletal or muscular structureA specific type of cell or organelleA unique genetic sequence or regulatory elementA specific type of behavior or adaptation to a certain environmentIt's important to note that the traits of a common ancestor are often inferred from the study of living organisms and their evolutionary relationships, as well as from the fossils records. Therefore, the exact traits of a common ancestor can be difficult to determine and may be subject to change as new information is discovered.
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how many molecules of carbon dioxide are released during one turn of the citric acid cycle?
Answer: 4
Explanation:
Krebs cycle, also known as the TCA (tricarboxylic acid) or citric acid cycle, takes place inside the mitochondrial matrix. This cycle is a stepwise oxidative and cyclic degradation of acetyl CoA. The cycle acts on the 2 pyruvate molecules generated during glycolysis.
The end product of glycolysis is pyruvate. 1 molecule of glucose produces 2 molecules of pyruvate. So 1 molecule of pyruvate is responsible for the release of 2 CO2 molecules during 1 Krebs cycle. Since 1 glucose molecule gives 2 pyruvate molecules. There will be two cycles to utilize both the pyruvate molecules. Thus, 1 glucose molecule is responsible for the release of 4 CO2 molecules during Krebs cycle.
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explain the role of the followinghormone during homeostasis 1.insulin
Answer:
Insulin enables blood glucose to enter cells, where they use it to produce energy. Together, insulin and glucagon help maintain homeostasis, where conditions inside the body hold steady. When a person's blood sugar is too high, their pancreas secretes more insulin.
Insulin allows the cells in the muscles, fat and liver to absorb glucose that is in the blood. The glucose serves as energy to these cells, or it can be converted into fat when needed. Insulin also affects other metabolic processes, such as the breakdown of fat or protein.
What are 2 other species concepts that can be used to identify species?
Phylogenetic Species Concept (PSC) and Ecological Species Concept (ESC) are the two concepts which is used to identify the species.
Phylogenetic Species are defined as genealogically, independent of mode of reproduction. In this concept a species is a "tip" on phylogeny which is the smallest set of organisms that share an ancestor and can be distinguished from the other such sets.
Ecological Species are termed as the lineages of organisms which is maintained by the selection forces. It is a set of organisms which share environmental niches, with differences between forms in response to the availability of resources and groups being adaptive behaviors.
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Place A and B recieve the same amount of rainfall. Place A has a lot of concrete surfaces and roads. Place B had fewer concrete surfaces and more open areas such as playground and parks. Explain the diffrence between the water tables in place A and place B
The water table in B is greater than the water table in A.
What is the water table?We know that the water table would have to do with the level of the water that can be found under the ground. The water table is formed from the amount of the water that can be bale to get into the ground from the surface of the ground.
Now, we know that if the ground of the place is made up of concrete then there would be less water that would penetrate the ground and then the water table of the place would be found to be lower than those of open areas.
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Esther was on the YMCA diving team. She was on the 30 meter platform preparing to do a dive. If Esther's mass was 50 kg and she hit the water with a force of 980 N, what was her acceleration?
The acceleration of Esther on the YMCA was found to be about 19.6 m/s^2
What are the three acceleration laws?
Unless pushed upon by a force, every item travels in a straight line. An object's acceleration is directly proportional to the net force applied and inversely proportional to the object's mass. There is an equal and opposite reaction to every action.
In basic terms, what is acceleration?
Acceleration is the rate at which velocity varies over time, both in terms of speed and direction. A point or object travelling in a straight path is accelerated if it accelerates or decelerates. Even if the speed is constant, motion on a circle is accelerated because the direction is constantly changing.
as per the formula F=ma
then this formula was rewritten as a=F/m
where m= mass = 50Kg
F= force exerted =980N
acceleration (a) = 980/50
a =19.6 m/s^2
The acceleration of Esther on the YMCA was found to be about 19.6 m/s^2
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What is the incentive for producers?
A higher price for a good or service creates an incentive for buyers to buy less of that good or service and for producers to produce or sell more of it.
When the price of goods and services falls, it creates an incentive for buyers to buy more of those goods and services and for producers to produce or sell less of them. Price-based incentives are economic factors that motivate and persuade buyers to take action and complete purchases.
Special pricing allows users to get financial benefits on their purchases. Incentive function of the price mechanism
Manufacturers offer more products because they offer opportunities to generate more revenue and profits. The price increase incentive function is associated with increasing supply along the existing supply curve.
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Narcotics act on the nervous system by producing a?
Answer:
Opioid drugs also disrupt the natural production of norepinephrine and act as central nervous system depressants. Opioids block pain sensations, induce drowsiness, reduce body temperature, and slow heart rate, blood pressure, and respiration functions.
What is a codon and what is its role in protein synthesis?
A codon is a DNA or RNA sequence of three nucleotides that serves as a unit of genomic information and codes for a specific amino acid or signals the end of protein production.
Any of the 64 distinct DNA sequences of three consecutive nucleotides that either encode information for the creation of a particular amino acid or act as a stop signal to end translation are referred to as codons in genetics (protein synthesis). Adenine (A), guanine (G), cytosine (C), and uracil (U) are the four nitrogenous bases that make up codons (U). The 20 amino acids that make up proteins are specified by 61 of the 64 available codon sequences, while three are stop signals.In the process of protein synthesis, polypeptide chains are created inside of cells using programmed combinations of individual amino acids. A coded sequence, enzymes, and messenger, ribosomal, and transfer ribonucleic acids are necessary for the creation of new polypeptides (RNAs).
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Answer: A codon is a DNA or RNA sequence of three nucleotides
Explanation:
How does process of becoming pregnant involving fertilization?
Answer:
5858588874747777766636
Explanation:
777475757474737737373737377373737
Which of the following could be performed by a biomechanist?
A. quantitative analysis of human movement
B. qualitative analysis of human movement
C. both A and B
D. none of the above
The following could be performed by a biomechanist correct options is
C. both A and B
The science of biomechanics is crucial for addressing issues with human mobility. Biomechanics is only one of several elements in a kinesiology professional's arsenal related to sport and human movement science.
Measures of the severity of head injuries have been developed as a result of the biomechanical study of automobile accidents. These measurements have been used in biomechanical testing and in the design of numerous types of helmets to avoid brain injuries.
The qualitative analysis of human movement is one of the most crucial abilities of kinesiology specialists, and biomechanics is the key contributor to this talent because it is essentially the science of movement method.
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what is pepsin secreted in its inactive form
Answer: Specific cells within the gastric lining, known as chief cells, release pepsin in an inactive form, or zymogen form, called pepsinogen. By doing so, the stomach prevents the auto-digestion of protective proteins in the lining of the digestive tract.
How do geologic cross-sections help geologists learn about the geologic history of a location?
O They show the oldest and most well-preserved rocks and fossils in a location.
O They reveal the absolute ages of each rock and the fossils it contains.
O. They reveal the rock type, layers, and relative ages of events of a location.
O They present information on the rocks and fossils found at the surface.
They show the oldest and most well-preserved rocks and fossils in a location.
What is geologic cross-sections?A geological cross-section is a visual representation of where the subsurface geological bodies intersect a particular orientation vertical plane. Geological cross sections, which may or may not include accompanying maps, are graphic depictions of vertical slices through the earth used to explain or interpret geological relationships. Line diagrams called "cross sections" depict a landscape from the side. They can display topographic details like hills and valleys or subterranean information like the depth of a river. The height of the land can be determined from cross sections of hills using contour lines.Scientists disagree about whether the rocks are 3.8 billion or 4.4 billion years old, but they were recently discovered in the northeastern edge of Hudson Bay in Canada. The earlier date would place the rocks close to when Earth first created.To learn more about geologic cross-sections refer to:
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The law of segregation states that every organism possesses a pair of?
Mendel's law of segregation occurs late in meiosis (I and II). This is the first stage of meiosis, in which homologous chromosomes are segregated into her two daughter nuclei with different versions of each gene.
Gregor Mendel's law of segregation consists of four parts. First, define the alleles. Second, it states that an organism inherits one allele of her from each parent. Third, a gamete states that he has only one allele for each trait.
According to the law of segregation, only one of the two gene copies present in an organism is distributed to each gamete (egg or sperm cell) it produces, and the allocation of gene copies is random.
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Which of the following is an example of bias? *
Repeating experiments with the same results.
Conducting a blind experiment.
Selecting results from one trial over those from other trials
Communicating unfavorable results.
Double-blind study occurs when neither the participants nor the researchers involved in a study know who’s been assigned to the control and treatment groups.
What is research detection bias?Detection bias refers to systemic disparities in how outcomes are determined between groups. Blinding (or masking) outcome assessors may lessen the possibility that knowing which intervention was received, rather than the intervention itself, influences outcome assessment.
Blinding (also known as masking) is a technique used to try to reduce such prejudice. To avoid selection bias, it is a principle of randomised controlled trials that the treatment allocation for each patient is not revealed until the patient has definitively entered the experiment. A clinical study in which neither the participants nor the researcher know the treatment or intervention they are getting until the trial is completed. As a result, the study’s findings are less likely to be skewed.
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In the 1960s, mitochondrial dna was discovered with the use of an electron microscope. the presence of mitochondrial dna in eukaryotic cells suggests what about the origin of life on earth?
It's possible that mitochondria were free-living cells (endosymbiotic theory).
What is the proof that mitochondria first appeared in eukaryotes?Mitochondria appear to have evolved only once throughout all of evolution, much like eukaryotes themselves. The mitochondrial DNA is conserved in all known eukaryotic groupings, which provides the strongest support for the idea that mitochondria had a single origin. These genes are definitely homologous and frequently inherited.
What does research on mitochondrial DNA indicate on the ancestry of contemporary Europeans?There was no genetic similarity between the hunter-gatherers and modern Europeans, according to a study of ancient and current mtDNA samples. This finding suggests that modern Europeans are descended from settlers who brought farming to the area, not from the indigenous populations.
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What is a known benefit of cardiorespiratory training?
An important indicator of physical health and general wellness is cardiorespiratory fitness. During physical exercise, the heart, lungs, and circulatory system must cooperate to provide oxygen to the muscles.
Fitness for the heart and lungs can enhance one's overall quality of life. Exercise on a regular basis can boost energy levels, making it simpler to do daily chores. Fitness for the heart and lungs is crucial for daily living since it has many positive effects on the body, mind, and spirit.
Cardiorespiratory fitness is a key factor in enhancing physical health. Regular exercise has been shown to lower the risk of Type 2 diabetes, hypertension, cardiovascular disease, and stroke. It can also aid in increasing muscular mass and decreasing body fat. Additionally, consistent exercise can enhance lung health, cardiorespiratory fitness has advantages for the mind and the body in addition to the physical ones. Regular exercise can lessen stress, elevate mood, and sharpen the mind. Exercise can enhance cognitive performance while lowering anxiety and depressive symptoms
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A human gene was insterted into a plasmid and then produced by a bacterium. Unfortunately, the human protein was not functional. Explain what may have gone wrong.
This gene contains introns, which bacteria do not. If we directly cloned the gene, the bacteria would produce mRNA with introns and would be unable to splice it.
What happens when DNA of humans is inserted into bacterial plasmid?Researchers can create recombinant plasmids by inserting DNA fragments or genes into plasmid vectors. This plasmid can be introduced into a bacterium through a process known as transformation. Because bacteria divide quickly, they can then be used as factories to copy large amounts of DNA fragments.
This gene has introns, which bacteria do not have. If cloned directly, the bacteria would produce mRNA with coding regions and be unable to clip it.
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Which of the following would be least likely to diffuse through a cell membrane without the help of a transport protein
Answer:
A large polar molecule
Explanation:
Answer:
Large polar molecule
Explanation:
Which of the following would be least likely to diffuse through a plasma membrane without the help of a transport protein? A large polar molecule would be the least likely to passively diffuse through a plasma membrane without the help of a transport protein. Both its size and the hydrophobic interior of the membrane would restrict it.
(Describe what scientific principles and other relevant knowledge might limit the possible solutions such as(the lifespan of the California condor, the mating habits of the condor, the ecology of the habitat, how to duplicate the habitat in a reserve, what laws needed to be approved and enforced, how did human behavior need to change.
The scientific principles and other relevant knowledge that may limit the possible solutions for the California condor include:
The lifespan of the California condor: The natural lifespan of a California condor is typically around 60 years, which may limit the ability to repopulate the species through captive breeding programs.
The mating habits of the condor: California condors have a very low reproductive rate, with females only breeding every 2-3 years. This may limit the potential for population growth.
The ecology of the habitat: The California condor's natural habitat is limited to specific regions of the western United States and Mexico. Understanding the specific ecological needs of the condor, such as food sources and nesting sites, is crucial for any conservation efforts.
How to duplicate the habitat in a reserve: In order to create a successful reserve for the California condor, it is necessary to replicate the natural habitat as closely as possible. This requires a detailed understanding of the ecology of the species' natural habitat.
Laws needed to be approved and enforced: Conservation efforts for the California condor require laws and regulations to protect the species and its habitat. These laws need to be approved and enforced in order to be effective.
Human behavior needs to change: Human activities, such as hunting, pollution, and habitat destruction, have contributed to the decline of the California condor population. Changing human behavior is essential for the conservation of the species.
What is captive breeding program?Captive breeding programs are efforts to breed and raise certain species of animals in captivity, with the goal of preserving the species, increasing its population, or reintroducing it to the wild.
These programs are often used for endangered or threatened species that are at risk of extinction in the wild. They can be run by zoos, wildlife parks, conservation organizations, or government agencies. The breeding programs can also be used for research, education, and veterinary care.
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How do earthworms spread to new areas?
Earthworms spread slowly in nature, but human activities like planting, earthmoving for construction, and the release of worms used as fishing bait can swiftly introduce them.
Worldwide, earthworms are an invasive species. There are roughly 120 widely spread earthworm species worldwide out of a total of about 6,000 species. These earthworms are peregrine or cosmopolitan. In many places, some of them are invasive species. An earthworm uses two distinct sets of muscles to move. Longitudinal muscles run the length of the body, while circular muscles loop around each segment. The earthworm extends as a result of the circular muscles contracting, growing longer and thinner.
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How many atoms are there in a 2 moles of oxygen atoms? how many atoms are there in 2 moles of oxygen molecules? group of answer choices.
The number of atoms in 2 moles of oxygen atoms is 1.204 x 10²⁴.
One mole of an element is the number of atoms contained in a substance which totals 6.02 x 10²³ atoms or is the gram weight of the element which is equal to its relative atomic mass (Ar). If there are 2 moles of O₂ atoms then the number of atoms is
Number of atoms = n x L
The number of atoms of O₂ = n x L
The number of atoms of O₂ = 2 x 6.02 x 10²³
The number of atoms of O₂ = 12.044 x 10²³ atoms
The number of atoms of O₂ = 1.204 x 10²⁴ atoms
So, the number of atoms of 2 moles is 1.204 x 10²⁴.
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