Keratin is a structural protein that is found in your skin, hair and nails. Collagen is the most abundant protein in your body and is the structural protein of your bones, tendons, ligaments and skin. Elastin is several hundred times more flexible than collagen.
Explanation:
I tried
Pistil of the flower
Answer: The pistil of the flower is the female reproductive part.
Explanation: It just is.
modern primates are characterized by arboreal adaptations. what is an example of this kind of adaptation in primates? group of answer choices short digits an expanded reliance on sense of smell a precision grip opposable thumbs
The example of arboreal adaptations which are characteristic to modern primates is: (4) opposable thumbs.
Arboreal adaptations are those that are present in animals that live on the trees. For example, many of the monkeys have great arm strength in order to swing on the trees. Camouflage is also an adaptation in some organisms, like chameleons. Such organisms also have greater balancing ability.
Opposable thumb is an adaptation where the thumb can be moved and rotated very easily and can also be placed behind the fingers of the same hand. This adaptation can be observed in animals like chimpanzees, orangutans, and other variants of apes; certain frogs, koalas, pandas, etc.
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Dermal papillae are numerous in palmar and plantar skin but few in number in the skin of the face and abdomen. What do you think is the functional significance of this difference?.
Dermal papillae help strengthen the connection between the dermis and epidermis and help prevent friction-related damage in high-use areas.
Dermal papillae are found in the papillary layer of the dermis. Two layers make up the dermis, which is located underneath the epidermis' malpighian layer. The dermal papillae, which resemble finger-like projections and extend into the epidermis, are part of the papillary layer, a thin outer layer of alveolar connective tissue. Numerous nerve endings, lymphatic veins, blood vessels, and hair follicles may be found in the dermis. Mesenchymal cells make up the dermal papilla in the hair follicle, which is primarily responsible for controlling hair development. The key to in vitro hair follicle formation and regeneration is maintaining the dermal sheath cells' and DPCs' potential hair inductivity throughout cell culture.
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Select the correct responses to the questions from the drop-down menus.
Which wind belt occurs at about 5 degrees north and south of the equator?
Which wind belt starts at the horse latitudes and moves toward the poles?
Which winds are found primarily in the tropics?
The wind belt that has been occurs at about about 5 degrees north and south of the equator is known as doldrums.
The wind belt that has been starts at the horse latitudes and moves toward the poles is the prevailing westerlies.
The winds that has been found primarily in the tropics are trade winds.
Doldrums refer to the equitorial region of the Atlantic Ocean that has storms and unpredictable winds.
What is north pole and south pole?
The north pole has been known as the northernmost point which has been presented on earth, and on the other hand south pole has been known as the southernmost part or the point of the earth. The area present in between south pole and north pole has been said that it is extremely cold and the area present near the equator is extremely hot.
Therefore, The wind belt that has been occurs at about about 5 degrees north and south of the equator is known as doldrums.
The wind belt that has been starts at the horse latitudes and moves toward the poles is the prevailing westerlies.
The winds that has been found primarily in the tropics are trade winds.
Doldrums refer to the equitorial region of the Atlantic Ocean that has storms and unpredictable winds.
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Answer:
this the answer
Explanation:
one way to clone an organism is to transfer the nucleus of a cell taken from animal a, place it into an egg from animal b whose nucleus has been removed, and then implant it into a surrogate mother, animal c. the cloned animal would be identical to
As the nucleus was taken from cell a, the animal would be identical to animal a.
The nucleus is the structure of a cell in which chromosomes are present. The chromosomes contain the genetic material called DNA. The genetic material is what makes all of the traits of an organism.
In the case above, the nucleus of a cell from animal A was taken. Hence, no matter in which egg you place it and implant the egg for surrogacy, the offspring born will be identical to animal A.
The nucleus of a cell represents the entire karyotype of that organism. Hence, the cloned animal produced in the above case will be identical to animal A.
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It is important too so many trials in an experiment to…
Scientists employ replicated experiments and repeated trials to test hypotheses to ensure that they consistently arrive at the same conclusion and that the initial result wasn't just a lucky guess. They must be certain that the response to their theory is always exactly the same.
The scientist is better able to comprehend the results of the test when the conditions of the experiment are under control. It's not always possible to control every aspect of a test, especially when the hypothesis is being proved for the first time. A hypothesis may be tested by making predictions about patterns that should emerge if the theory is true, especially if conducting a controlled experiment is impractical or impossible for ethical reasons. The scientist gathers information from as many patterns as they can reasonably test or push to be tested. The principle supporting the hypothesis becomes stronger the more experiments the scientist does.When conducting tests, independent and dependent variables are used. Independent and dependent variables are present in an experiment involving two groups, such as when plants are given water on one set and none on the other. Because it is not dependent on chance, the group that receives water in this example is the independent variable. The water is deliberately applied by the scientist. The response that is examined in an experiment to determine if the treatment had any effect is known as the dependent variable. It depends on the independent variable since the lack of water on the group of plants demonstrates whether the scientist's application alters the result.To know more about Trials please click here : https://brainly.com/question/4559559
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a certain badger is heterozygous for two genes; he has sharp claws and bad breath. he mates with another badger that is homozygous for both genes, with sharp claws and minty-fresh breath. what are the chances that they have an offspring with sharp claws and minty-fresh breath? (assume simple, mendelian inheritance.)
The chances of offspring to have sharp claws and minty fresh breath is 50% since one parent has (Tt) and other has (TT) . The offsprings would be TT, Tt, TT, and Tt..
What is Mendelian inheritance?The term "Mendelian inheritance" refers to specific patterns that can be observed in the way characteristics are passed down from parents to children. In the 19th century, the Austrian monk Gregor Mendel conducted thousands of tests with pea plants in order to develop these broad patterns. He did this in order to determine the genetic makeup of pea plants.
Law of Dominance is one of Mendel's three proposed laws of inheritance, which also includes Law of Inheritance. The law that enforced segregation. The Principle of Independent Assortment is a Law.
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During which eon was the earth made of land masses all clumped together in one supercontinent called Rodinia?A. PhanerozoicB. HadeanC. ProterozoicD. Archean
The oldest of the supercontinents is called Rodinia and was formed during Precambrian between 1.1 billion and 750 million years ago. It as formed from parts of older and poorly inderstood supercontinents, being broken in the first period of the Neoproteozoic (Tonian Period). The scientists hypothesize that Rodinia as formed during the Proterozoic eon.
Algor mortis, or postmortem cooling of the body, varies with ambient temperatures. Based on the results of your experiment, how does ambient temperature affect the rate of cooling of a body after death? explain your answer. Include how this might affect the use of the glaister equation in determining the time of death.
The ambient temperature affect the rate of cooling of a body after death occurs depends on the temperature differential between the body and the environment.
How long does it take for the body to cool down after death?Once vital functions cease, the body cools at an average of 1°C to 1.5°C per hour. Considering that the average temperature of a human being is between 36 °C and 37 °C, the corpse reaches the ambient temperature in 24 hours at most.
The higher the ambient temperature, the more important the evaporative heat loss will be. In fact, when ambient temperature is higher than body temperature, the only way to lose heat is through evaporation. Human beings lose heat through sweating.
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Two mechanisms that affect the genetic diveristy of bacterial population
Horizontal gene transfer involves several mechanisms that can increase the genetic diversity of bacterial populations.
One of these mechanisms is bacterial conjugation in which a donor cell transfers genetic material to a recipient cell through a pili which function as a conduit.
Another mechanism of variability is through bacteriophages where genetic material is moved from one bacterium to another, this method is called transduction.
how does facilitated diffusion differ from simple
Answer: in facilitated diffusion there are a specialized membrane channels.
Explanation:
Which is a product of photosynthesis?(1 point)
Responses
sugar
sugar
water
water
carbon dioxide
carbon dioxide
sunlight
sunlight
Answer:
sugar is the answer
Explanation:
sugar and oxygen are both products of photosynthesis
Answer:sugar
Explanation:
what medical technology have some chinese chosen to pursue in order to increase the possibility of multiple children in a single pregnancy
The use of fertility drugs is the technology used by some Chinese that can increase the possibility of multiple children in a single pregnancy.
Fertility drugs are the medications that serve various functions like production of eggs or sperms, or their quality. Some drugs can speed up the growth and maturity of egg cells, resulting in the release of more than one egg cell at the same time. This is how multiple children are born from a single pregnancy.
Pregnancy is the stage when the fusion of the male and female gamete happens and the fetus develops inside the body of the mother. For humans, this time period is of 9 months.
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Which cells, prokaryotes, and eukaryotes, have a cell membrane, and which do not?
a mutation during dna replication causes a g to be inserted after the first base of the codon for tryptophan. how will this affect the growing polypeptide chain?
From this point on, the reading frame will be moved to the left, and the incorrect amino acids will be inserted.
Three bases make up a codon, which determines which amino acid will be put into the polypeptide chain. A codon is a section of the genetic code that forms the basis for the insertion of amino acids. Three RNA or DNA nucleotides make up this compound.
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Answer:
Explanation:
During DNA replication, a mutation results in the insertion of a g after the first base of the tryptophan codon and from this point on, the reading frame will be moved to the left, and the incorrect amino acids will be inserted.
How does the mutation change the order of amino acids?
Although a mutation at specific places, such as conserved residues, might affect both the protein’s structure and function, it is not always the case that a mutation in the amino acid sequence would modify a protein’s structure.
What impact do mutations have on the outcomes of DNA replication?
A DNA sequence mutation is an alteration.
Before DNA replication, mutations can be transmitted to daughter DNA molecules and subsequent cells.
Only one daughter copy will have the mutation and the other won't if the mutation only affects one strand of the parent molecule.
Which sort of mutation is brought on by the removal or addition of one or two DNA bases?
The insertion or deletion of nucleotide bases in amounts that are not multiples of three is referred to as a frameshift mutation in a gene.
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How is the atomic number of an atom determined?
answer: counting the number of protons in the nucleus
The atomic number of an atom determined by counting Number of Protons
Atomic number:
The Atomic number of an atom determined by Number of protons present in nucleus of the atom of the element. It is denoted by alphabet 'Z'. All atoms of a element will contains the same number of protons, and as well as other characteristics.
Atoms of different elements will have different types of atomic numbers. For example, the atomic number of all atoms of the Oxygen is 8, whereas the atomic number of all atoms of the Carbon is 6.
The atomic numbers of an atom are whole numbers as they are obtained by counting protons. The combination of Number of protons and nucleus gives the Mass number of Atom.
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What is the answer? Please help.
Answer: A is the answer. Note that there are different polypeptide structures.
the value of psi in root tissue of a plant has been found to be 4.6 bars. if you place this root tissue in a 0.2m sucrose solution at 20 c in an open beaker. what is the psi of the solution? which direction will the net flow of water be?
Water potential is calculated using the formula = S + P. The relationship between osmotic potential and solute concentration is direct. The likelihood that water in a solution may undergo osmosis reduces as a solution's solute concentration rises.
What is the potential of water?Water potential is higher in pure water. Purified water's water potential has traditionally been set at zero. This implies that any solution's water potential will always be negative.
The value of base water potential begins to decline at a temperature increase of 5 to 20 °C, whereas base water potential begins to grow at a temperature increase of 20 to 40 °C.
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What is missing in an environment undergoing primary succession that would be present in an environment undergoing secondary succession?
The answer would be SOIL.
Primary succession refers to the ecological succession that occurs in a new land where life has not yet existed. It takes place after a lava flow cools and hardens into a new land, or when a glacier recedes and exposes new land. Because the land that results from these processes is totally new land, the soil must first be produced. On the other hand, secondary succession happens in a formerly inhabited area that was disturbed. The disturbance could be a fire, flood, or human action such as farming. Secondary succession is faster because the soil is already in place. In this case, the pioneer species are plants such as grasses, birch trees, and fireweed. Organic matter from the pioneer species improves the soil. This lets other plants move into the area.
How can a balanced reciprocal translocation that does not cause the person to have an abnormal phenotype cause that person’s offspring to have an abnormal phenotype?.
Chromosomes can balance the reciprocal translocation that does not cause the person to have an abnormal phenotype cause that person’s offspring to have an abnormal phenotype.
The chromosomes are positioned in a balanced reciprocal translocation so that neither more nor less chromosome material is obtained or lost during the operation. Unless they give birth to a kid, a person who has balanced translocation is frequently unaware that they are experiencing this kind of issue. A child may inherit an unbalanced translocation if one parent has a balanced translocation if this is the case. When chromosomal material is exchanged in an imbalanced translocation, genes that should be present are either added or removed. The parent does not always have to pass on balanced translocation to the child if they have it.
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if you allowed your dilution tubes to incubate for 24 hours before plating them, do you think the results of the experiment would be impacted? assume that unlimited resources are present in the tubes. explain your answer.
If you allowed your dilution tubes to incubate for 24 hours before plating them, the results of this experiment would be impacted.
What is incubation?Incubation is the maintenance of uniform temperature and humidity conditions to ensure the growth of microorganisms, especially bacteria.
If there is already an unlimited resource in the tube, the colony-forming units per milliliter will be affected or altered as this creates more favorable conditions for the formation of further colonies.
Even with dilution in performed in a hood and sterile medium, the microbial colony will increase as more microorganisms differentiate and increase in number over the 24 hour interval.
An incubator is a device used to grow and maintain microbial or cell cultures. The incubator maintains optimal temperature, humidity, and other conditions such as CO2 and oxygen levels in the atmosphere inside. Incubators are essential for many experimental tasks in cell biology, microbiology and molecular biology and are used to culture both bacterial and eukaryotic cells.
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which of the following is a major difference between prokaryotic cells and eukaryotic cells? eukaryotic cells have more intracellular organelles than prokaryotes. prokaryotes are not able to carry out aerobic respiration, relying instead on anaerobic metabolism. prokaryotes are generally larger than eukaryotes. prokaryotes have cells but eukaryotes do not.
The major difference between prokaryotic cells and eukaryotic cells is that eukaryotic cells have more intracellular organelles than prokaryotes (option A).
What are eukaryotes?Eukaryotes are any of the single-celled or multicellular organisms of the taxonomic domain Eukaryota, whose cells contain at least one distinct nucleus.
On the other hand, prokaryotes are organism whose cell (or cells) are characterized by the absence of a nucleus or any other membrane-bound organelles.
Eukaryotic organisms have membrane bound organelles such as chloroplast, mitochondria, lysosomes and endoplasmic reticulum while prokaryotic organisms lack these organelles.
Based on this, eukaryotic organisms will possess more intracellular organelles than their prokaryotic counterparts.
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which aspect of phospholipids is most important to the formation of bilayers? they are amphipathic. their hydrocarbon tails can consist of fatty acids or isoprene subunits. the length of their hydrocarbon tails can be altered to modulate membrane fluidity. their polar heads can interact with water.
The aspect of phospholipids that is most important to the formation of bilayers is the amphipathic molecules.
What qualities do amphipathic compounds have?Hydrophobic and hydrophilic regions can both be found in amphipathic compounds. There is a sizable, lipophilic carbon molecule in the hydrocarbon portion of the compound. On the hydrophilic section with polar functional groups, there is a charge that may be cations, anions, or absent.
Why are detergent molecules amphipathic?Detergents, soaps, shampoos, and many other cleaning solutions can also transport away pollutants that are difficult to remove with just water because of the amphipathic molecules. Lye, a chemical, is used to process fatty materials, such as vegetable or animal oils, to create soap.
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Organisms
What do that provide?
What are the X and Y chromosomes
After four half-lives of decay, what is the ratio of radioactive parent isotope to stable daughter isotope?
answer: 1:15
1:15 is the ratio of radioactive parent isotope to stable daughter isotope,
after four half-lives of decay.
Let:
'A' be the initial concentration of the radioactive parent isotope'n' be the number of corresponding half-lives'A/2ⁿ ' be the final concentration of the radioactive parent isotopeUsing the Exponential Decay Relation:
A → A/2ⁿ ( after 'n' half-lives )
A⁴ → A/2⁴
A⁴ → A/16
∵The final concentration of the radioactive parent isotope is A/16.
∴The initial concentration of the stable daughter isotope will be 15A/16.
1:15 is the ratio of radioactive parent isotope to stable daughter isotope,
after four half-lives of decay.
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24. assume independent assortment and start with a plant that is dihybrid a/a;b/b: a. what phenotypic ratio is produced from selfing it? b. what genotypic ratio is produced from selfing it? c. what phenotypic ratio is produced from testcross- ing it? d. what genotypic ratio is produced from testcrossing it?
A. The phenotypic ratio is produced by selfing it:
9: A/_; B/_3: A/_; bb3: aa; B_1: aa; bbB. The genotypic ratio from selfing it:
1: Aa; Bb1: Aa; bb1: aa; Bb1: aa; bbC. The phenotypic ratio for a test cross is 1:1:1:1.
D. Test matings with heterozygous individuals should consistently yield a dominant-to-recessive phenotype ratio of approximately 1:1. Here the ratio of both genotype and phenotype is 50:50.
To estimate the genotype-phenotype relationship, calculate the number of Punnett squares for each allele aggregate. Therefore, in this example, we use one Punnett square box for RR and RR and two Punnett square boxes for Rr.
Calculating the Punnett rectangular ratio as 1:2:1 offers the genotypic ratio, giving the genotypic ratio. One obvious way to find out your genotype is to do a genetic test. Companies like 23andMe can do this fairly cheaply these days. But for this to work, scientists must understand the genetic differences that lead to traits.
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how is muscle contraction stimulated by calcium ions? i. calcium ions are released from the sarcoplasmic reticulum and bind to myosin, stimulating atpase activity. ii. calcium ions are released from the sarcoplasmic reticulum and bind to tropomyosin, stimulating its atpase activity. iii. calcium ions are released from the sarcoplasmic reticulum and bind to actin, promoting its binding to myosin. iv. calcium ions are released from the sarcoplasmic reticulum and bind to troponin c, promoting the binding of myosin to actin. v. none of the other options.
Further explanation:
Muscle contraction is a state which the muscle fiber becomes tense and may shorten.Calcium, which is stored at extremely low amounts in the sarcoplasm, is required for contraction. Calcium ions bind to troponin when they are present, creating conformational changes in troponin that allow tropomyosin to migrate away from the myosin binding sites on actin.to know more about muscle, go to:
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What should scientists include when making a model to study a system?
Scientists include a model of a system that should include all of the relevant variables in the system, as well as the relationships between those variables. The model should be as simple as possible while still accurately representing the system.
Who is a scientist?
A scientist is someone who does scientific study to enhance knowledge in a particular field. Scientists are inspired to work in a variety of ways. Many people want to know why the world is the way it is and how it came to be.
Scientists aid in our understanding of the world. They observe the occurrences around us, collect data on what they observe, and evaluate that data to develop laws and rules governing how the world operates. Knowing the rules is essential if you want to play a game well.
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Question 6 of 10
Which two statements describe examples of inferences used to draw
scientific conclusions?
A. A cheetah has a speed of 33 m per second over short distances
because the cheetah sprinted 330 m in 10 seconds.
B. T. rex must have been a carnivore because fossilized remains
show teeth well-suited to biting and crushing bones.
C. The population of black bears in a 100 km² area has increased
from 14 to 18 in the past year.
D. It will rain this afternoon because the satellite images show
increased cloud cover moving in this direction.
B , C statement of inferences used to draw scientific conclusions
What constitutes a valid scientific inference?For instance, when researchers identify the contents of a fossilized dinosaur dropping, they can extrapolate what the dinosaur consumed when it was still alive. They are drawing conclusions about the dinosaur's behavior based on evidence, not by seeing it feed.
Quizlet on "scientific inference"a claim that outlines what scientists anticipate happening consistently under a specific set of circumstances.
Which step in the scientific process involves drawing conclusions?Normally, after making an observation, you draw a logical conclusion about what you believe is happening or the link between two things. In the end, you'll develop a formalized hypothesis to test using the inference(s) you've drawn.
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