A population of pigs live on an island together with burrowing termites. Pigs that have the longest snouts tend to survive more frequently than those with shorter snouts. Over time, most of the pig population is made up of individuals that have very long snouts. This an example of which type of variation?
Answers
Related Questions
which of the following represent mechanisms by which proteobacteria generate a proton motive force for atp synthesis?
Answers
The mechanism by which proteobacteria generate a proton motive force for ATP synthesis is: (1) aerobic oxidation of H2S; (2) light-driven proton pumps; and (4) anaerobic oxidation of glucose.
Proteobacteria is a large phylum of the Gram-negative bacteria. The microorganisms of proteobacteria are: hydrogenogenic CO oxidizers. These bacteria may have varying shapes and forms. They are also called purple bacteria and relatives.
Proton motive force (PMF) is a type of potential energy that drives the synthesis of ATP. It is comprised of charge and chemical components. PMF is created by the pumping out of the of protons by the respiratory chain complexes.
The given question is incomplete, the complete question is:
Which of the following represent mechanisms by which proteobacteria generate a proton motive force for ATP synthesis?
aerobic oxidation of H2S light-driven proton pumps reduction of CO2 by H2 anaerobic oxidation of glucose photolysis of H2OTo know more about proteobacteria, here
brainly.com/question/3136310
#SPJ4
Please select the word from the list that best fits the definition "falling rain or snow" A. evaporation B. condensation C. precipitation D. water cycle
Answers
The following question has two parts. First, answer Part A. Then, answer Part B.Caused by a mutation, sickle cell anemia is a disorder that affects hemoglobin, the red blood cell molecule that carries oxygen to cells throughout the body. The β chain of the hemoglobin protein is a single chain of amino acids and is 147 amino acids long. In humans, the gene that encodes for the β chain is located on chromosome 11. The diagrams show the DNA, RNA, and amino acid sequence of an unaffected person and a person with sickle cell anemia.image f8707eaefc0147c9bd074a15bb19c344Part A:Where does the mutation that causes this disorder occur?AThe mutation occurs on the DNA.BThe mutation occurs on the RNA.CThe mutation occurs on the ribosomes.DThe mutation occurs on the amino acid.Part B:Which BEST describes the result of this mutation?AThe entire sequence of amino acids is changed.BThe RNA strand does not code for the correct amino acids.CThe change in amino acids shortens the polypeptide sequence.DThe alternation of a single nucleotide encodes for a different amino acid.
Answers
Sickle cell disease is a hereditary disease seen most often among people of African ancestry. Caused by mutations in one of the genes that encode the hemoglobin protein, the disease is inherited as an autosomal recessive trait. The mutation causes the red blood cells to take on an unusual sickle shape. Individuals affected by sickle cell disease are chronically anemic and experience significant damage to their heart, lungs, and kidneys.
A piano player uses her hands for brief quick movements. Which muscle fiber type would you therefore predict to be predominant in these muscles
Answers
For brief quick movements, which muscle fiber type would you therefore predict to be predominant in these muscles...Fast twitch muscle fiber type.
There are three types of muscle tissue. 1. Cardiac 2. Smooth 3. skeletal muscles. The skeletal muscle are involved in voluntary movements of the body.
Since the player uses her hand in a voluntary way of movement, therefore she makes use of her skeletal muscles.
With regards to the skeletal muscles, there are two types with regards to speed, we have the slow twitch and the fast-twitch.
The fast-twitch muscle fiber aids in fast movement of the body but for shorter periods compared to the slow twitch.
Learn more: https://brainly.in/question/6418353.
Which of these is a drawback of growing a crop that has been genetically modified to
resist an herbicide?
A. Farms that grow the crop cannot use other pest-
management techniques.
B. The technique works only when farmers use the herbicide to grow a crop
C. The crop will produce natural herbicides that can pollute surface runoff.
XO D. The crop will produce food that is less nutritious than that of traditional
crops
Answers
Answer:
B
Explanation:
I just took the test
Answer:
b
Explanation:
A homeostatic process utilizes a pathway that monitors an internal variable, such as blood glucose concentration. When the variable changes and moves away from homeostasis, specific cells within the tissue are activated. As a result, the activated cells release a chemical that travels to adjacent cells to activate a response. This chemical is an example of a/an
Answers
The type of chemical that is an example of a substance involved in a homeostatic process when a pathway monitors an internal variable such as blood glucose concentration is called a hormone.
Homeostasis is a physiological process that maintains the internal environment of the human body in a constant and balanced state. Hormones are signaling molecules produced by the endocrine glands that act as messengers that convey information from one part of the body to another. Hormones circulate through the bloodstream and activate target cells located in distant parts of the body, resulting in a response. These hormones can be proteins, peptides, or amino acid derivatives. Hormones play a significant role in maintaining a homeostatic environment within the body. Hormones help regulate blood glucose levels, salt and water balance, and blood pressure, among other things. Hormones are critical for keeping the internal environment in balance and ensuring that the body's functions operate properly. Hormones also play a crucial role in enabling an organism to respond and adapt to its environment. In summary, the chemical that travels to adjacent cells and activates a response during a homeostatic process is called a hormone.
To know more about hormone visit:
https://brainly.com/question/30367679
#SPJ11
What is "the balance of nature"?
Answers
The balance of nature is a theory that proposes that ecological systems are usually in a stable equilibrium or homeostasis, which is to say that a small change (the size of a particular population, is one example) will be corrected by some negative feedback that will bring the parameter back to its original "point of balance" with the rest of the system.
Which are the possible genotype combinations for their offspring? Select 3 options. Rr RR rr RRR r
Answers
Rr , RR and rr are the possible genotype combinations for their offspring .
Explanation:
Genotype is the description of genes present in an organism. Genotype is always a pair of letter such as RR,Rr or rr .Answer:
RR rr Rr
Explanation:
answer pls
Describe the results from the following base mutations, substitution, insertion, and deletion.
Answers
Answer:
The results from the following base mutations --- substitution, insertion, and deletion are :
base substitution causes no change in the length of DNA. Base insertion causes an increase in the length of the DNA. Base deletion causes a decrease in the length of the DNA.Explanation:
What is base substitution :
In base substitution form of mutation, one nucleotide is simply replaced or transformed into another nucleotide. This may occur due to replication or transcription error, due to mutagenic exposure, etc. For example A to T, G to C, etc.What is base insertion:
Here, one or more nucleotides get added to a DNA, caused due to mutagenic exposure. Also known as addition, this may occur during recombination when the cell undergoes meiotic cell division.What is base deletion :
In base deletion, one or more nucleotides are deleted from the DNA stand, under the effect of mutagens or a wrongly operating recombination machinery.What are the effects of base mutations:
In light of the change in the length of the DNA strand,base substitution causes no change in the length of DNA. Base insertion causes an increase in the length of the DNA. Base deletion causes a decrease in the length of the DNA.All forms of these mutations, unless otherwise repaired by the inbuilt cellular DNA repair mechanisms, leads to the production of DNA strand different from the original DNA, often producing a defective polypeptide or no functional polypeptide. Such changes are often heritable, and may even be lethal for an organism.To know more about base mutations, visit:
https://brainly.com/question/462225
1 point
What evidence supports that organisms traveled in herds like elephants,
birds, or zebras. *
O index fossils
O fossils of many individuals of the same species together
identical fossils on widely separated continents
fossil marine animals in the desert
Answers
Answer:
Fossils of many individuals of the same species together
Suppose a true-breeding brown-striped lizard is crossed with a true-breeding white-striped lizard. In the next generation, all of the lizards are brown-striped.
What does this outcome tell you about the allele for brown stripes?
Responses
The brown stripe allele is dominant to the white stripe allele..
The brown stripe allele shows incomplete dominance.
The brown stripe allele is sex-linked.
The brown stripe allele is recessive to the white stripe allele.
Answers
If a true-breeding brown-striped lizard is crossed with a true-breeding white-striped lizard and in the next generation, all of the lizards are brown-striped, then this outcome indicates that the brown stripe allele is dominant to the white stripe allele (option a).
What is a dominant allele gene variant?A dominant allele gene variant is any genetic variant in a given locus that is expressed on a recessive asked allele to generate an individual having a characteristic phenotype even in individuals that are heterozygous for the gene.
However, a heterozygous individual can be denied as an organism that exhibits two different gene variants or alleles for a given genetic locus.
Therefore, with this data, we can see that a dominant allele gene variant is able to mask another gene variant or allele called the recessive allele in heterozygous individuals that have both gene variants.
Learn more about dominant allele gene variants here:
https://brainly.com/question/2717245
#SPJ1
Cross a chinchilla with an albino. Complete the Punnett square to show the genotypes from this cross. Assume the chinchilla rabbits are female.
[ ] [ ]
[ ] [ ] [ ]
[ ] [ ] [ ]
Please show where they go in the boxes.
C=chinchilla, a=albino,
Answers
Answer:
C C
A AC AC
A AC AC
Answer:
C C
a Ca Ca
a Ca Ca
Explanation:
chinchilla is dominant over albino
13. One of the functions of a petal in a flowering plant is to a. protect the internal parts of the flower C. support the anther d. make pollen grains b. connect the stigma to the ovary
Answers
Answer:
Diagram of a flower showing the pistil, stigma, style, ovary, stamen, anther, filament, petal, ovule with embryo sac, sepal, receptacle, and peduncle.
Peduncle: The stalk of a flower.
Receptacle: The part of a flower stalk where the parts of the flower are attached.
Sepal: The outer parts of the flower (often green and leaf-like) that enclose a developing bud.
Petal: The parts of a flower that are often conspicuously colored.
Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther.
Anther: The part of the stamen where pollen is produced.
Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma. The mature ovary is a fruit, and the mature ovule is a seed.
Stigma: The part of the pistil where pollen germinates.
Ovary: The enlarged basal portion of the pistil where ovules are produced.
What are the degradations made by detrital rocks?
Answers
Answer:
Sedimentary rocks can be organized into two categories. The first is detrital rock, which comes from the erosion and accumulation of rock fragments, sediment, or other materials—categorized in total as detritus, or debris. The other is chemical rock, produced from the dissolution and precipitation of minerals.
Explanation:
blame the internet if this is wrong
NEED ASAP BIOLOGY 50 POINTS
Answers
Answer:
1. carbohydrates
2.nucleic acid
3.proteins
4.lipids
5.nucleic acid
6.proteins
7.lipids
8.carbohydrates
Explanation:
a mineral that specifically aids in the development and functioning of the thyroid gland is:
Answers
The mineral that specifically aids in the development and functioning of the thyroid gland is iodine.
It is a key component in the production of thyroid hormones, which regulate metabolism and various bodily functions. Iodine deficiency can lead to goiter and other thyroid-related problems. It is important to consume iodine-rich foods such as seaweed, fish, dairy products, and iodized salt to ensure optimal thyroid health.
Iodine is an essential trace element required for the synthesis of thyroid hormones, such as thyroxine (T4) and triiodothyronine (T3). These hormones play a crucial role in regulating metabolism, growth, and development in the human body. An adequate intake of iodine is vital for maintaining proper thyroid function and preventing disorders like goiter, hypothyroidism, and intellectual disabilities in children.
Learn more about iodine here:
https://brainly.com/question/2064871
#SPJ11
glial cells that act as microbe eating cells are the
Answers
The glial cells that act as microbe eating cells are the microglia. Microglia are a type of glial cell that have been described as the "immune cells of the brain.
They are involved in a variety of processes, including phagocytosis, which is the process of engulfing and destroying invading microbes and foreign substances.
Glia, unlike neurons, are non-neuronal cells found in the central nervous system (CNS) and peripheral nervous system (PNS) of vertebrates and some invertebrates. Glia outnumber neurons by a factor of ten to one.
To know more about cells visit :
https://brainly.com/question/30046049
#SPJ11
identify the function of the following group in protein synthesis. hydrolysis hydrogenation alkylation protection
Answers
Hydrolysis, hydrogenation, alkylation, and protection are not specific groups involved in protein synthesis. However, certain functional groups such as amino, carboxyl, and sulfhydryl groups, as well as chemical modifications such as phosphorylation and glycosylation, are involved in various stages of protein synthesis.
During protein synthesis, amino acids are linked together by peptide bonds through a process called condensation. The amino group (-NH2) of one amino acid reacts with the carboxyl group (-COOH) of another amino acid, resulting in the formation of a peptide bond (-CO-NH-). This process occurs repeatedly until a polypeptide chain is formed.
Sulfhydryl groups (-SH) are important in protein folding and stabilization through the formation of disulfide bonds (-S-S-) between cysteine residues. Phosphorylation involves the addition of a phosphate group (-PO4) to specific amino acid residues, which can regulate protein activity and function. Glycosylation involves the addition of carbohydrate groups to specific amino acid residues, which can affect protein stability and function.
Overall, functional groups and chemical modifications play crucial roles in protein synthesis and structure, as well as protein function and regulation.
Learn more about Glycosylation here :
https://brainly.com/question/28480064
#SPJ11
If both glucose and starch were added to the inside of the artificial cell at the start of the experiment state where starch would be located after 20 minutes?
Answers
Because the starch is too large to fit through the pores in the artificial cell, it would stay inside the cell.
It recognized the starch in the "cell" and changed the hue to a blue-black to show its presence. Any starch had Lugol's Iodine, which diffused out. This is due to the presence of a solution outside the "cell," which turns blue-black when starch is present.
Due to its size and direct rejection by the hydrophobic tails, glucose cannot permeate a cell membrane by simple diffusion. Instead, it crosses through assisted diffusion, which includes molecules crossing channel proteins to traverse the membrane.
To know more about glucose visit :
https://brainly.com/question/30078982
#SPJ4
based on your t-tests, which of the following statements is/are correct. select all that apply. a. there is a significant difference in tarsus length of the birds before and after the drought. b. we have support for our null hypothesis for wing length. c. we reject our null hypothesis for bird mass. d. we reject our null hypothesis for beak depth. e. there is a significant difference between the mass of birds before and after the drought. f. we have support for our null hypothesis for tarsus length. g. there is a significant difference in the wing length of birds before and after the drought. h. there is a significant difference between the beak depth of birds before and after the drought.
Answers
The t test for a mean is a statistical test for a population mean. The t-test can be used when the population is normal, the population standard deviation is unknown and the sample size is less than 30. The correct option a)
A statistical test called a t test is employed to compare the means of two groups. It is frequently employed in hypothesis testing to see if a procedure or treatment truly affects the population of interest or whether two groups differ from one another.
When you wish to compare the mean from your sample to another value and have taken a small, random sample from a statistical "population," you should perform a t test. The comparison value might be the mean of a second sample or a set number, like 10, for example.
Learn more about t-tests,
https://brainly.com/question/15870238
#SPJ4
Full Question: Which of the following statements is true regarding the T Test for a mean:
a.The t test for a mean is a statistical test for a population mean. The t-test can be used when the population is normal, the population standard deviation is unknown and the sample size is less than 30
b.The t test for a mean is a statistical test for a population mean. The t-test can be used when the population is normal, the population standard deviation is known and the sample size is at least 30
c.The t test a statistical test for the variance or standard deviation. The t-test can be used when the population is normal, the population standard deviation is known and the sample size is at least 30
d.All of the above
e.None of the above
the drainage pattern that has a pattern that looks like a branching tree is called: dendritic trellis annular radial
Answers
The drainage pattern that has a pattern that looks like a branching tree is called a.) Dendritic.
What is a drainage pattern with dendritic and trellis?This pattern, known as a dendritic pattern, appears where the river channel follows the terrain's slope. The name "dendritic" comes from how the stream and its tributaries resemble tree branches. Trellis pattern: A trellis pattern forms when a river's tributaries are linked at roughly right angles.
What is the drainage pattern for the trellis?These appear where sedimentary strata have been bent or tilted, and depending on the strength of the eroded material, to varied degrees. In this form, the main stream and the short succeeding streams intersect at an angle. Diverse erosion through soft rocks makes way for tributaries.
Learn more about Trellis here:
brainly.com/question/29411217
#SPJ4
what happens to the rate of atp synthesis if the ph of the thylakoid lumen decreases?
Answers
Answer:INCREASE
Explanation:
The ph in the thylakoid lumen is about 7, and in the stroma about 8.
During the synthesis of the ATP, the direction of the proton is from the thylakoid lumen (positive sire) to stroma (negative side). According to the question, the ph decreases in the thylakoid lumen, and it means that the concentration of protons increases in the thylakoid lumen. Therefore, the rate of the ATP synthesis increases.
If the pH of the thylakoid lumen decreases, then the rate of ATP synthesis increases.
What is photosinhtesis?Photosynthesis refers to different reactions by which plants can produce carbohydrates by using energy from the sun.
Photosynthetic reactions produce ATP in the chloroplasts by using a proton gradient.More protons present in the lumen of chloroplasts will result in a higher supply of these protons in the stroma.In conclusion, if the pH of the thylakoid lumen decreases, then the rate of ATP synthesis increases.
Learn more in:
https://brainly.com/question/19160081
what is sexual reproduction
Answers
Answer:
the production of new living organisms by combining genetic information from two individuals of different types (sexes). In most higher organisms, one sex (male) produces a small motile gamete which travels to fuse with a larger stationary gamete produced by the other (female).
Answer:
I think this answers you help u
Natural organic compounds produced by plants that are poisonous, particularly to insects, are known as:_________
Answers
Natural organic compounds produced by plants that are poisonous, particularly to insects, are known as botanicals
How do natural poisons work?
Natural poisons are poisonous substances that are created by living things. Although these toxins are not dangerous to the organisms themselves, they could be toxic if consumed by humans or other animals. These chemical substances differ in their biological activity and toxicity and have a variety of structural variations.
Some toxins are created by plants as a form of natural defense against pests, insects, or other creatures, or as a result of an infestation with mold-causing microbes in reaction to climatic stress (such as drought or extreme humidity).
Other natural toxin sources include microscopic algae and plankton that live in lakes and oceans. These organisms produce chemical compounds that are poisonous to humans but not to fish or shellfish that eat them.
Learn more about Natural poisons here:-
https://brainly.com/question/3371993
#SPJ4
How are the Hawaiian honeycreepers an example of adaptive radiation?
There were a large variety of honeycreepers that first inhabited the island. They found many different niches, so they were all able to survive.
The honeycreepers that first inhabited the island were able to adapt as the island changed, so that population of birds was able to survive.
There was a diversification of honeycreepers (each with different beak shapes) to help fill various ecological niches.
Answers
Answer: In adaptive radiation, many different species evolve from a single ancestor species. Each new species evolves to exploit a different niche, such as food source. In the example above, Hawaiian honeycreepers evolved a range of bill forms in response to available food sources on the Hawaiian archipelago. The honeycreepers dispersed from one founder species, and evolved in response to natural selection based on different food sources in their isolated habitats provided by water. Seed-eating birds evolved thick, short beaks.
Determine the rate of water loss at 12:00.
Use the tangent on the graph above (attatched).
Give your answer in:
- cm^3 per minute
- standard form.
Answers
The rate of water loss at 12:00 is 0.0952 cm³/minute. In standard form, the answer is 9.52 × 10⁻² cm³/minute.
How to determine rate of water loss?The tangent on the graph intersects the y-axis at 190 cm³. The slope of the tangent is 0.0952 cm³/minute. Therefore, the rate of water loss at 12:00 is 0.0952 cm³/minute. In standard form, the answer is 9.52 × 10⁻² cm³/minute.
To determine the rate of water loss at 12:00:
Find the intersection of the tangent with the y-axis. This will give you the amount of water loss at 12:00.
Find the slope of the tangent. This will give you the rate of water loss at 12:00.
Convert the rate of water loss from cm³/hour to cm³/minute by dividing by 60.
Express the answer in standard form by moving the decimal point two places to the left.
Find out more on rate of water loss here: https://brainly.com/question/28320732
#SPJ1
the substances that serve as the major vehicles for fat transport in the bloodstream are
Answers
The substances that serve as the major vehicles for fat transport in the bloodstream are lipoproteins, which are composed of both lipids and proteins.
There are several types of lipoproteins, including chylomicrons, very low-density lipoproteins (VLDL), low-density lipoproteins (LDL), and high-density lipoproteins (HDL). Chylomicrons are formed in the intestine after the ingestion of dietary fats, while VLDL and LDL are produced in the liver and transport endogenous fats. HDL, on the other hand, is responsible for removing excess cholesterol from the bloodstream and transporting it to the liver for processing and excretion.
The levels of these lipoproteins in the bloodstream are important markers of cardiovascular health, as high levels of LDL and low levels of HDL are associated with an increased risk of heart disease.
To know more about bloodstream visit:-
https://brainly.com/question/31811029
#SPJ11
continuous sequence of growth (interphase) and division (mitosis) in a cell. cell growth phase where a cell increases in size, carries on metabolism, and duplicates chromosomes prior to division. period of nuclear cell division in which two daughter cells are formed, each containing a complete set of chromosomes.
Answers
The cell cycle is a four-stage procedure in which the cell enlarges replicates its DNA gets ready to divide ( and splits (mitosis, or M, stage).
What is the cell's continuous process of growth, interphase, and division during mitosis?The cell cycle is a four-step process in which the cell grows in size (gap 1, or G1, stage), duplicates its DNA (synthesis, or S, stage), gets ready to divide (gap 2, or G2, stage), and divides (gap 3, or S, stage) (mitosis, or M, stage). Interphase, which accounts for the time between cell divisions, is made up of the phases G1, S, and G2.Interphase. The cell prepares for cell division during interphase while simultaneously going through regular activities. Numerous internal and external requirements must be satisfied for a cell to transition from the interphase to the mitotic phase.To learn more about cell refer to:
https://brainly.com/question/13920046
#SPJ4
Two things required for respiration to occur
Answers
Answer:
Inhaling and exhaling
According to the article, ______ are important because they enable scientists to discover and learn about ecological patterns.
a. long-term, large scale studies b.short term, local experiments c.complicated genetic experiments
d. observational studies
Answers
The sentence can be with options long-term, large-scale studies short-term, local experiments. Therefore, the correct options are A and B.
Patterns in ecology can be classified at many biological levels. From species to populations, communities to ecosystems, and so on. Even at the most basic levels of physiology (organs) and creature behavior, patterns have a scale, activate ecological processes, and connect occurrences across seasons.
The given blank of the statement can be completed as:
According to the article, long-term, large-scale studies and short-term, local experiments are important because they enable scientists to discover and learn about ecological patterns.
The reason for these are:
A.) long-term, large-scale studies:
Long-term research gives essential information that short-term studies cannot supply. These investigations allow scientists to study and explore ecological research.
B.) short term, local experiments:
Because of the dramatic decline in kelp forests, bald eagles have been observed shifting their diet from fish to seabirds and other mammals. According to biologists, they have evolved into opportunistic foragers, consuming anything they can in order to live.
Hence, the correct options are A and B.
Learn more about Ecological Patterns here:
https://brainly.com/question/31593928
#SPJ4