Bottleneck effect helps the biologists to save species nearing extinction because it helps in reestablishment of the species.
Specified, widespread violence or purposeful culling, human population planning, and other human actions such as famine, earthquakes, floods, fires, disease, and droughts can all cause population bottlenecks. Population bottlenecks can also occur owing to genetic bottlenecks. Such occurrences can lessen the genetic variety of a community, leaving just a smaller population to transmit genes to future generations of offspring through sexual reproduction.
from such a small population by continuously breeding and providing good environment the again flourishment of the species can take place.
Thus, this small population is now taken care of by biologist so that the proper sexual reproduction can take place and thus the population is maintained and thus conservation takes place.
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Which element is a component of all proteins, all nucleic acids, chlorophyll, and is the primary component of air?
Nitrogen is a component of all proteins, all nucleic acids, chlorophyll, and is the primary component of air.
Since plants require nitrogen in the biggest amount of all other significant nutrients, it is the nutrient that limits crop productivity that is mentioned the most frequently. Nitrogen is a component that every amino acid needs to be functional. Proteins are composed of amino acids.Nitrogen is a component of nucleic acids, which make up the DNA of all living things and contain the genetic code.Nitrogen is present in chlorophyll, which is where carbs are created (photosynthesis). Chlorophyll is the substance that gives plants their green hue.Photosynthesis moves along quickly when nitrogen levels are sufficient.A plant usually grows swiftly if it obtains enough nitrogen. The leaves will also begin to turn a dark green color.Learn more about the Nitrogen cycle with the help of the given link:
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If the growth rate of the number of bacteria at anytime t is proportional to the number present at t and doubles in 1 week, how many bacteriacan be expected :____
after 2 weeks?
after 4 weeks?
After two weeks the number of bacteria that could be
[tex]is \: 4 \: x _{0} \: and \: after \: four \: weeks \: the \:[/tex]
number of bacteria that could be expected is
[tex]16 \: x _{0} .[/tex]
The growth rate of the number of bacteria is at time t ∝Number of bacteria present at time t
Let the population of the bacteria present at time t = x(4)
[tex]Let \: x(0) = x _{ 0}[/tex]
[tex]Let x(1) = 2 \: x_{0}[/tex]
[tex] \frac{dx}{dt} = kx[/tex]
k is the constant.
[tex]∫ \frac{dx}{x} = ∫kdt[/tex]
[tex]log_{c} \: x = kt + log_{e} \: c[/tex]
So at the time, t = 0.
[tex] log_{e} \: x _{0} = log_{e} \:c[/tex]
[tex]c = x _{0}[/tex]
[tex]log \: x = kt \: + \: log \: x _{0}[/tex]
[tex]x = x_{0} \: \times \: e ^{kt} [/tex]
At the time t = 1.
[tex]2 \: x _{0} = x _{0} \: e^{k} [/tex]
[tex]2 = e ^{k} [/tex]
k = In 2
[tex]x(t) \: = \: x _{0} \: e ^{In \: 2t} [/tex]
After two weeks the number of bacteria that could be expected is,
[tex]x(2) \: = \: x _{0} \: e ^{In \: 2} [/tex]
[tex] x _{0} \: 2^{2} = 4 \: x _{0} [/tex]
After two weeks the number of bacteria could be expected to
[tex]is \: 4 \: x _{0} .[/tex]
After four weeks the number of bacteria that could be expected is,
[tex]x(4) \: = \: x _{0} \: e ^{4In \: 2} [/tex]
[tex]x _{0} \: 2^{4} = 16 \: x _{0} [/tex]
After four weeks the number of bacteria could be
[tex]expected \: is \: 16 \: x _{0} .[/tex]
Therefore, after two weeks the number of bacteria that
[tex]could \: be \: expected \: is \: 4 \: x _{0} \: and \: after \:[/tex]
and four weeks the number of bacteria that could be
[tex]expected \: is \: 16 \: x _{0} .[/tex]
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Name one similarity and one difference between pinocytosis and receptor-mediated endocytosis.
One similarity and one difference between pinocytosis and receptor-mediated endocytosis are listed below :-
One similarity between pinocytosis and receptor-mediated endocytosis is that : they are both types of endocytosis, which is a type of active transport that transports particles into cells. These particles, which can include cell fragments, whole cells, and other large molecules (such as water and cholesterol), are too large to enter the cell passively through the cell membrane.
One major difference between pinocytosis and receptor-mediated endocytosis is that : pinocytosis is not a selective process, whereas receptor-mediated endocytosis is. Furthermore, pinocytosis takes place solely through the cell membrane, whereas receptor-mediated endocytosis takes place with the help of receptors.
What is Pinocytosis and Receptor-Mediated Endocytosis?
Pinocytosis is a simple endocytosis process that transports liquids and their solutes into the cell. As a result, it is also known as "cell drinking."
Another type of endocytosis is receptor-mediated endocytosis (RME), which is responsible for the selective uptake of solutes into the cell.
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Which hormone elevations indicate turner syndrome? select all that apply. one, some, or all responses may be correct.
Lutropin and Follitropin hormone elevations indicate turner syndrome.
The nurse monitors the client for which side effect of the atropine sulfate in the postoperative period?The answer is Urinary retention.
Urinary retention is a disorder where your bladder is unable to completely empty of urine. Chronic urinary retention prevents the bladder from emptying entirely over time as opposed to acute urinary retention, which causes an abrupt inability to urinate.
Individuals with intense urinary maintenance can't urinate by any means, despite the fact that they have a full bladder. Intense urinary maintenance, a possibly hazardous medicinal condition, requires quick crisis treatment. Intense urinary maintenance can cause awesome distress or torment.
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what is importance of plate tectonics in your life
Answer:It formed the continents we live on – we can't live under water. When plates collide and subduct (where one plate goes under another), magma is generated, creating volcanoes. We think several repetitions of this process is what built the continents. The tectonic plates are part of the water cycle of the Earth.
Explanation:
A heritability coefficient of ____ means about 50 percent of the difference between people on a specific characteristic is the result of heredity.
A heritability coefficient of 0.5 means about 50 percent of the difference between people on a specific characteristic is the result of heredity.
Heritability coefficient tells about how the differences in genes of people accounts for their phenotypic differences. It is represented as H² . The formula for calculation of Heritability coefficient is H² = Var(G) / Var(P), where Var(G) is the variance in genotype and Var(P) is the variance in phenotype. The values range from 0 to 1. If the value is 1, then phenotypic difference is due to genetic differences. And if the value is 0 then phenotypic differences are due to environmental factors.
Heredity is the passing on of the traits from one generation to another. An offspring receives half of its genes from the mother and half from the father.
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When part of a molecule, what is the typical number of bonds and nonbonding pairs of electrons for each of these atoms?.
Answer:This means the halogens are typically just 1 bonding pair and 3 lone pairs.
Explanation:
Embryonic stem cells give rise to all cell types in the developing embryo. would you expect the interphase period of a stem cell to longer, shorter, or the same as compared to non-stem cells?
The interphase in embryonic stem cells is shorter as they are rapidly dividing.
Pluripotent stem cells, called embryonic stem cells (ESCs), are generated from the inner cell mass of the blastocyst, an early-stage preimplantation embryo. Four to five days after fertilization, the human embryo reaches the blastocyst stage, which consists of 50-150 cells. The blastocyst is destroyed when the inner cell mass (germinal cells) are separated by immuno surgery, raising moral questions as to whether the pre-implantation embryo follows the same moral standards as the post-implantation development. Similar to adult stem cells, these are stem cells supplied by a healthy, fully developed human being. They were not collected or implanted using embryos or fetuses. Scientists believe that stem cells can be used to treat and understand disease because they can differentiate into different cell types.Therefore, embryonic stem cells will have shorter interphase.
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How do electrostatic interactions contribute to the free enrgy of hydrolysis of atp?
Answer:
Electrostatic repulsion destabilizes ATP relative to the hydrolysis products and therefore makes hydrolysis favorable.
Explanation:
Whenever in contact with water, the highly unstable molecule of ATP hydrolyzes into ADP as well as inorganic phosphate. Those two high-energy containing phosphate bonds inside this molecule are what give it its high energy. When the high-energy containing phosphoanhydride bonds within the adenosine triphosphate (ATP) are broken, like inside the muscles, energy that had previously been deposited in these bonds is freed through the catabolism method known as ATP hydrolysis. The amount of energy should always be entered into ATP synthesis because ATP hydrolysis radiates. An endergonic mechanism is a phosphorylation, or perhaps the condensing of phosphate groups into AMP. Energy is required for a variety of vital biological and cellular functions, including ATP hydrolysis.
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Diabetes insipidus or diabetes mellitus in very poor control would most likely be indicated by ________.
Answer:
Diabetes insipidus or diabetes mellitus in very poor control would most likely be indicated by polyuria.
Explanation:
An uncommon condition called diabetes insipidus makes the body produce excessive amounts of urine. Individuals who have diabetes insipidus can produce as much as 20 quarts of pee each day, compared to the average person's 1 to 3 quarts. The above condition, known as polyuria, causes individuals to regularly have to urinate. They could also have polydipsia, which is characterised by persistent thirst and excessive hydration.
Diabetes insipidus and diabetes mellitus are not the same. Despite the fact that both illnesses might make a person thirstier and urinate more frequently, they are unrelated.
The blood sugar, commonly known as glucose, is just too high if one have diabetes mellitus. By letting the additional glucose travel through the urine, the kidneys attempt to eliminate it.
The blood sugar levels are acceptable if you have diabetes insipidus, while the kidneys struggle to effectively concentrate urine.
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Why do plants have both chloroplasts and mitochondria but animals only have mitochondria?
The answer to the question is-
A plant requires sunshine, carbon dioxide (CO2), and water for photosynthesis to occur. The mitochondria then break down the sugar once it has been produced through photosynthesis to produce energy for the cell. Animals only need mitochondria, not chloroplasts, because they obtain their sugar from the food they eat.
What is mitochondria?Most eukaryotic organisms contain a mitochondrion, a double-membrane-bound organelle. Adenosine triphosphate (ATP), which is used as a source of chemical energy throughout the cell, is primarily produced by mitochondria using aerobic respiration.
In some multicellular organisms, certain cells lack mitochondria. Numerous unicellular organisms, including microsporidia, parabasalids, and diplomonads, have diminished or changed the structure of their mitochondria.
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Unlike eukaryotes, bacterial dna is not enclosed by a nuclear membrane. instead, bacterial dna is condensed into a region called the __________.
Unlike eukaryotes, bacterial DNA is not enclosed by a nuclear membrane. instead, bacterial DNA is condensed into a region called the nucleoid.
Eukaryotes are the organisms that possess the eukaryotic cell. The eukaryotic cell is advanced type of cell with well-defined nucleus and also the cell organelles are present. Eukaryotes can have both 70S and 80S type of ribosomes.
Nucleoid is the condensed region in the prokaryotic cell that comprises of the genetic material, the DNA. It is an irregular shaped structure lying in the cytoplasm of the cell. There is usually a single pair of chromosome present in the nucleoid.
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Hair cells located near the base of the basilar membrane respond best to ________ sounds.
Hair cells located near the base of the basilar membrane respond best to low-pitched sounds.
Hair cells are the sensory cells of the ear. These receive the stimulus in the form of sounds and then convert it into electrical signals to be transmitted to the brain. They are called hair cells because they appear as hair-like ciliated structures.
Low-pitched sound is the one generated due to low frequency of the sound waves. It is also known as the Hoarse sound. The example of low pitched sounds are: thunder, roaring of lion, ringing of bell, etc. A low-pitches sound is said to be deep.
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The process by which an endospore rehydrates and begins cellular metabolism is termed _____.
The process by which an endospore rehydrates and begins cellular metabolism is termed germination.
Endospore is the dormant form of asexual reproductive structure. It has a tough outer layer that is resistant to various unfavorable conditions, harmful chemicals, therefore protecting the inner contents. The endospore's tough layer breaks off only when the favorable conditions arrive.
Germination is the process where the dormancy of a seed or a spore breaks off and the enzymes present inside get activated. The outer protective payer of the endospore breaks off. After that the spore regains all its functionalities and the cell division begins.
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Flagella and cilia of eukaryotic cells require a cytoskeleton composed of ______ to function properly
Flagella and cilia of eukaryotic cells require a cytoskeleton composed of microtubules to function properly.
What is the role of microtubules in cilia and flagella?The intracellular movement and positioning of membrane vesicles and organelles, the separation of chromosomes during mitosis, and the beating of cilia and flagella are all regulated by microtubules. The first microtubule motor proteins, kinesin and dynein, move along microtubules in opposite directions, kinesin moving toward the plus end and dynein moving toward the minus end. Many different eukaryotic cells move by means of cilia and flagella, which are plasma membrane projections based on microtubules. The flagella of many bacteria are prokaryotic, which means they differ greatly from the flagella of eukaryotes.Learn more about the Microtubules with the help of the given link:
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Why do scientists complete their experiments more than once?
Answer:Scientists repeat experiments several times because it results in more accurate data that can be trusted over just doing an experiment once.
Explanation:
Melissa's child was born with an extra chromosome, resulting in down syndrome. this is an example of:_______
Answer:Mutation
Explanation:
Helicopter transport of patients was responsible for not only transport but also improved treatment of wounded soldiers due to in-flight care during:_________
Helicopter transport of patients was responsible for not only transport but also improved treatment of wounded soldiers due to in-flight care during the Vietnam War.
What is the Vietnam War?From 1 November 1955 to 30 April 1975, when Saigon fell, there was a war in Vietnam, Laos, and Cambodia. Officially, North Vietnam and South Vietnam engaged in battle during the second Indochina War. The Cold War-era proxy war is commonly regarded as taking place in North Vietnam, which was supported by the Soviet Union, China, and other communist allies, and South Vietnam, which was supported by the United States and other anti-communist friends. The United States' direct involvement ended in 1973 after a nearly 20-year duration.
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When viewed under a transmission electron microscope, the golgi apparatus looks like ______.
Answer:
a stack containing multiple flattened, disk-shaped membranes called cisterns
Explanation:
Macrophages ingest and digest many pathogens. which organelle plays a major role in the activity of macrophages?
Macrophages ingest and digest many pathogens. The organelle that plays a major role in the activity of macrophages is lysosome.
Macrophages are the immune cells that belong to the category of white blood cells. They elicit an immune response in order to protect the body from foreign invaders. They can activate other immune cells as well. The type of immunity that macrophages provide is innate immunity.
Lysosome are the cell organelles that consists of hydrolytic enzymes. The lysosome burst open whenever the cell becomes damaged or is infected. This is the reason why macrophages are found to be associated with lysosome.
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The initial stage of atherosclerosis is characterized by accumulation beneath the endothelium of excessive amounts of?
The initial stage of atherosclerosis is characterized by accumulation beneath the endothelium of excessive amounts of LDL.
The accumulation of lipids, cholesterol, and other chemicals in and on the artery walls is known as atherosclerosis. The accumulation is known as plaque.The build-up of lipids and fibrous components in the major arteries is a hallmark of the degenerative illness known as atherosclerosis. A picture of a typical artery's anatomy can be found in Foam cells, or subendothelial accumulations of cholesterol-engorged macrophages, are the earliest lesions of atherosclerosis.Nitric oxide and prostacyclin are two chemicals that are produced by your endothelium. These maintain the fluid in your blood and stop it from clotting when it shouldn't. These compounds' insufficient production is a symptom of various diseases, which raises your risk of clotting.To learn more about atherosclerosis.
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The tendency of an atom to pull electrons toward itself is referred to as its _____. ionic potential tonicity covalency electronegativity polarity
The tendency of an atom to pull electrons toward itself is referred to as its "electronegativity" .
An atom's electronegativity gets higher as you move to the right in the periodic table. An atom's electronegativity gets higher as you move up in the periodic table. Thus, the atoms in the top right have the highest electronegativities and the atoms in the bottom left have the lowest ones
The ability of an atom or functional group to draw electrons to itself is known as an electronegativity in chemistry. An atom's electronegativity is influenced by simultaneously its atomic number and the separation between its charged nucleus and valence electrons.
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Name three abilties that birds have that help them survive and thrive? Which do you think is the most amazing, and why?
The birds have three physical characteristics such as swimming, walking, and perching.
Birds :All plants and animals can survive in their environment, this ability of organism is called adaptation.
Adaptation has produced more than a million different species of animals on earth. Flight is the most important adaptation. Animals can most easily fly into the environment. Birds' legs and feet have adapted to suit many different lifestyles.
Adaptation is caused by evolution which is a gradual change. Food is required to the birds to flight. Communication is also one of the key for survival.
Feather, bills, wings and egg laying capacity are some of the characteristics for animals. Hollow bones help birds to fly easily. Probing, perching, climbing, seizing prey are some of the characteristics of bird.
Therefore, The birds have three physical characteristics such as swimming, walking, and perching.
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What is the name of a chemical that is used only on inanimate objects and cannot be safely ingested as antimicrobial?
a. antiseptic gel
b. antibiotic
c. antibody
d. sanitizer
A chemical that is used only on inanimate objects and cannot be safely ingested as antimicrobial is sanitizer
Sanitizers are the chemicals used to destroy the disease causing pathogens from the inanimate objects. These substances are generally bleach like or different proportion alcohol solutions. The basic way they work is by dissolving the protein layer of the microbe and exposing its content leading to its death.
These sanitizers may also contain some essential oils to aid the skin in staying hydrated and not dry when used. During the corona times it helped to prevent the spread of virus as people regularly used it to get rid of any germs.
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Which period in human history occurred first in time?
Answer:
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins c. 3.3 million years ago and the beginning of recorded history with the invention of writing systems.
Explanation:
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Which cellular structures are composed of many amphipathic molecules that are driveen together under the influence of the hydrophobic effect?
The hydrophobic effect causes a large number of amphipathic molecules, which make up cellular membranes, to be drawn together.
What components make up the cell membrane?With a few rare exceptions, glycerophospholipids, which are made up of glycerol, a phosphate group, and two fatty acid chains, are the primary component of cellular membranes, including plasma membranes and interior membranes. The three-carbon molecule glycerol serves as the framework for these membrane lipids.What use does a cell membrane serve?All cells have a cell membrane, also known as a plasma membrane, which separates the interior of the cell from the external environment. A semipermeable lipid bilayer makes up the cell membrane. The movement of materials into and out of the cell is controlled by the cell membrane.learn more about cellular membrane here
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I can't really understand what the experiment would be, so I can't think of a hypothesis.
The experiment that is to be conducted is intended to verify and test the widely accepted hypothesis that maggots appear spontaneously in decaying meat. Additionally, you should record each and every step you take during this experiment.
The following is the theory or hypothesis : Fly larvae are referred to as maggots. They feed on meat because females place their eggs in materials that give food for the hatched maggots. Many fly species prefer meat as a source of maggot feeding. Modern meat processing and packaging follow strict health code guidelines. Until it is time to make it, it is stored frozen or chilled and is packaged in plastic. Meat exposed to the air at room temperature, however, might draw female flies looking for a spot to deposit their eggs which leads to maggots. Fly eggs can easily hatch on leftover meat scraps causing maggots that aren't wrapped in plastic or placed inside of a bag.
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Archaea with a plasma membrane composed of a tetraether monolayer would most likely be found __________.
The correct answer for this question is at a temperature of 90 degrees
Archaeal and bacterial lipids (A) Phosphatidylglycerol (PG) from Escherichia coli is a bilayer forming lipid in bacteria. The acyl chain can be branched, have a cyclohexyl group at the end, or have one or more unsaturated bonds.
The cytoplasmic membrane of bacteria and archaea determines the composition of the cytoplasm to a large extent. Because ion gradients across membranes, particularly proton and/or sodium ion gradients, are critical for the bioenergetic conditions of these microorganisms, strategies to limit permeation are required.
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Which does not use radiation but they do use magnetism instead?
X-ray
MRI
CT scan
Answer:
MRI
Explanation:
They use magnetism instead of x-rays or other radiation.
What makes up the organic matrix component of bone?
a. minerals and cells only
b. type i collagen and noncollagenous proteins
c. cells and collagen only
d. cells only
Type I collagen and non collagenous proteins makes up the organic matrix component of bone.
Which components make up the matrix of bone?The material found between cells in bone tissue is called bone matrix. The matrix of bones is composed of both organic and inorganic elements. Collagen makes up the majority of the organic component of the bone matrix. The bone matrix is composed of 67% inorganic material, primarily calcium phosphate crystals called hydroxyapatite.
What produces organic bone matrix?However, collagen is the main organic component. The osteoblasts and osteocytes that release type I collagen are responsible for around 90% of the organic component of the bone matrix. Collagen and calcium phosphate, which are the two main components of bone, set it apart from other hard tissues like chitin, enamel, and shell.
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