A species of frog is found separated into many subpopulations living in ponds that are surrounded by agricultural fields. Sometimes one frog subpopulation goes extinct because of disease or environmental stochasticity. Frogs from other subpopulations will occasionally move across fields to recolonize ponds where subpopulations have gone extinct. This is an example of metapopulation.
In ecology, a metapopulation is a geographical collection of related populations of a species. Each metapopulation for a given species is constantly changing due to population growth (births and immigrations), population decline (deaths and emigrations), as well as the development and dissolution of local populations included within it. A given species' local populations fluctuate in size, making it possible for it to go extinct when there aren't as many of it around.Some species frequently experience local population extinction, and the regional persistence of such species depends on the presence of a metapopulation. Therefore, removing a significant portion of the metapopulation structure in some species may raise the likelihood of regional extinction.
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A species of frog is found separated into many subpopulations living in ponds that are surrounded by agricultural fields. Sometimes one frog subpopulation goes extinct because of disease or environmental stochasticity. Frogs from other subpopulations will occasionally move across fields to recolonize ponds where subpopulations have gone extinct. This is an example of metapopulation.
What does metapopulation mean?A group of geographically distinct populations of the same species that interact on some level constitute a metapopulation. Richard Levins first used the word "metapopulation" in 1969 to describe a population dynamics model for insect pests in agricultural fields, but the concept has since been widely used to describe animals that live in naturally or artificially fragmented environments. In Levins' own words, it consists of "a population of populations".
Each metapopulation for a given species is constantly changing due to population growth (births and immigrations), population decline (deaths and emigrations), as well as the development and dissolution of local populations included within it.
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Which statement describes one way that wind energy is different from energy from fossil fuels?
O Wind energy reliability can be inconsistent.
O Wind energy produces larger quantities of energy.
O Wind energy can be reproduced quickly.
Wind energy produces more pollution.
Wing energy is reliable but is less consistent. The correct option is A.
What are fossil fuels?Fossil fuels are derived from the decomposition of plants and animals. These fuels, which can be encountered in the Earth's crust and encompass carbon and hydrogen, can be burned for energy.
Fossil fuels include coal, oil, and natural gas. These are consistent source of energy. On the other hand, wind energy is reliable but is not really consistent.
Thus, the correct option is A.
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Blood types A and B are codiminant and completely dominant to blood type O. A person with blood type AB has a child with a person with blood type O. What percent of their children are likely to express blood type O?
Answer:
The answer would be 0%
Explanation:
When you do the Punnett square of the couple (AB x OO), The blood would only be type A or B. The blood types dominate over blood type O since O is a recessive trait. So, blood type O would only possibly show if both parents have the trait.
The percentage of children that will likely express the blood type O is 0%. Details about genetic crosses can be found below.
What is co-dominance?Co-dominance is condition in which both alleles of a gene pair in a heterozygote are fully expressed, with neither one being dominant or recessive to the other.
According to this question, blood types A and B are codiminant and completely dominant to blood type O.
This means that if a person with with blood type AB has a child with a person with blood type O, the offsprings of this cross will have the following genotype:
AOBOTherefore, the percentage of children that will likely express the blood type O is 0%.
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Scientists study many different species, including mice, fruit flies, and monkeys to better understand human genes and how they lead to diseases. Why
Scientists study many different species to better understand human genes and how they lead to diseases due to an approach called comparative genomics.
What is comparative genomics?Comparative genomics is a subfield in genetics aimed at understanding gene function by comparing evolutionarily conserved sequences.
Comparative genomics is based on the alignment of homo-logous gene sequences between different species.
In conclusion, scientists study many different species due to an approach called comparative genomics.
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What type of cytotoxic T cells respond to foreign antigens only in association with class I MHC glycoproteins
CD8+ type of cytotoxic T cells responds to foreign antigens only in association with class I MHC glycoproteins.
What are cytotoxic T cells?
Cytotoxic T cell is a particular class of immune cell that is capable of eliminating specific types of cells, such as virus-infected cells, cancer cells, and alien cells. To destroy cancer cells, cytotoxic T cells can be isolated from other blood cells, cultured in a lab, and then administered to a patient.
Helper T cells binding to a processed antigen on the same dendritic cell as the MHC-class II presenting a processed cancer cell antigen enhances cytotoxic T-cell complete activation. Cytotoxic T cells release two cytokines in particular, TNF-alpha and IFN-gamma, which facilitate the activation of macrophages.
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Sebum contains ________ which contributes to creating an inhospitable environment on the surface of the body.
Sebum contains Fatty acids which contributes to creating an inhospitable environment on the surface of the body.
Sebaceous glands are tiny exocrine glands located at various body regions except for the palm and sole of feet. The glands produce oily substances called sebum, containing lipids (triglycerides), waxes, and fatty acids.Acne is a condition that happens due to the clogging of skin pores, leading to the formation of whiteheads, blackheads, and pimples.Acne usually appears on the forehead, cheeks, neck, back, and chin region. The skin pores get clogged due to bacteria, ingrown hairs, excess production of sebum (oil), hormones, and dead skin cells.learn more about Sebum here: https://brainly.com/question/10723558
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A restraint that provides protection without having to be handled by the occupant is called.
What phase is the indicated cell currently in?
Answer:
In eukaryotic cells, or cells with a nucleus, the stages of the cell cycle are divided into two major phases: interphase and the mitotic (M) phase. During interphase, the cell grows and makes a copy of its DNA. During the mitotic (M) phase, the cell separates its DNA into two sets and divides its cytoplasm, forming two new cells.
Explanation:
When a mycelium infiltrates into a previously untapped source of dead organic matter, what are most likely to appear within the food source soon after
Fungal digestive enzymes are most likely to appear within the food source soon after.
What is Fungal digestive enzymes?Fungal enzymes are active in an acidic environment that mimics the physiology of the human stomach.Production of fungal enzymes primarily involves submerged fermentation techniques.Digestionary enzymes are produced by your pancreas, small intestine, and stomach. The "powerhouse" of digestion's enzymes is actually the pancreas. The most crucial digestive enzymes, which break down proteins, lipids, and carbs, are produced by it.Learn more about enzyme here:
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Offspring inherit _________________; if one or both parents passes on a gene with DNA that does not code for functional proteins, disorders like phenylketonuria can result.
Offspring inherit one copy of each gene from both parents if one or both parents passes on a gene with DNA that does not code for functional proteins, disorders like phenylketonuria can result.
How do parents pass on one copy of each gene to their children?Their mother passes one copy on to them through the egg, while their father passes the other one along (via the sperm). Each egg and sperm have a single set of 23 chromosomes. Two copies of each chromosome and two copies of each gene are present when the sperm fertilizes the egg, resulting in the formation of an embryo.
An autosomal recessive metabolic genetic condition called phenylketonuria (PKU) is defined by a mutation that renders the gene for the hepatic enzyme phenylalanine hydroxylase (PAH) inactive.
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What is unique about how fish live in groups?
Answer:
Fish generally prefer larger groups over smaller groups. They prefer groups with similar species.
Explanation:
Which of the following is NOT an example of a selection pressure?
A. A tiger hunting prey
B. Surgery
C. Beginning of an ice age
D. Antibiotics
abc or d and a simple explanation
pls be sure of ur answer
Answer:
B. Surgery
Explanation:
I am not entirely sure but based on the definition of selection pressure (which talks about how external agents affect the survival of an organism) surgery is does not meet the definition.
A tiger hunting a prey affects the survival of prey. Beginning of ice age is an environmental agent that can affect survival of organism that cant tolerate cold. Antibiotics are drugs that can kill bacteria thus lower their survival. Surgery can actually increase survival if some form of disease is being treated.
In metabolic channeling, enzymes and metabolites are differentially distributed among separate cell structures or organelles and this different distribution is called _________.
In metabolic channeling, enzymes and metabolites are differentially distributed among separate cell structures or organelles and this different distribution is called compartmentation.
What is Metabolic channeling?Metabolic channeling may be defined as the representation employed to illustrate the limited discharge of substrates and products in multienzyme systems.
This metabolic channeling is catalyzed with specific enzymes and metabolites and then releases the product in the specific cell structures or organelles only.
This activity of channeling is known as target-specific channeling and the process that mediates this activity is known as compartmentation.
Therefore, it is well described above.
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1. Describe the effect on the rate of photosynthesis if the temperature is increased from 10°c to 20°c
Answer:
As temperature increases the number of collisions increases, therefore the rate of photosynthesis increases.
Explanation:
However, at high temperatures, enzymes are denatured and this will decrease the rate of photosynthesis
Which phase of the bacterial growth curve is defined by zero net growth due to a lack of nutrients and excessive waste products being present
The phase in the bacterial growth curve which is defined by zero net growth due to a lack of nutrients and excessive waste products being present is the death phase of the growth curve.
The bacterial growth curve is a curve that depicts the number of viable live cells in a bacterial culture over a span of time. This growth curve has four very distinct phases, which are- lag phase, log phase, stationary phase, death phase.
Lag phase- The first phase which is the period of metabolic growth rather than division of cells.Log phase- The second phase where the cells are dividing and increasing in numbers.Stationary phase- The third phase where the bacterial cells reach a stagnant period and stop dividing due to the lack of nutrients.Death phase- The last phase where there is no metabolic growth or cellular division. The culture is filled with metabolic wastes from the lysis of cells.Learn more about the growth curve here-
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what are the cause of thrombosis
Answer:
Injury to the vain.
Explanation:
Thrombosis is affected by virchows triad of stasis, turbulence and coagualability of the blood. An increase in any of these three can cause thrombosis.
The blood pools in the legs when we stand or sit and we very rarely are in a situation where gravity aids in draining blood from the legs. The body forces the blood up the legs by squeezing it up when we contract our leg muscles. We have one way valves in these veins to prevent the blood from falling back down the vein. So if we are in a situation where we are vertical for long periods of time or not moving our muscles or have had a previous thrombosis that has damaged our venous valves this can further increase the stasis already present in the legs and precipitate a thrombosis. It is this predisposition to stasis that causes dost thrombosis to occur in the legs.
Flying causes DVTs for this reason as we are sitting still for long periods of time. Also the recycled air can cause dehydration which increases the coagulability of the blood.
The Philadelphia chromosome results when a portion of chromosome 9 is swapped for a portion of chromosome 22. This type of mutation is called a _______ and leads to cancer.
Answer:
translocation
Explanation:
What are some ways that humans negatively affect the environment?
Answer:
Explanation:
1) We exploit natural resources to our fullest extent. For example, we perform deforestation to get raw products for manufacturing stuff. Deforestation can lead to wide array of problems like soil erosion, landslides, and even extinction of animal species.
2) We pollute, like a LOT! Look up plastic islands in ocean or microplastics found in fish or even some mammals. We dump stuff into ocean which can not only pollute the water but also kill marine life.
3) We burn fossil fuels which releases gases that trap heat in earth's atmosphere and result in global warming.
4) the list goes on and on and on and on......
One problem with eradicating invasive species is that sometimes the disturbed area is unable to be colonized by native species. For example, in forests where the invasive plant garlic mustard has been removed, native plants and animals do not recolonize because they are extinct in that patch of forest. How should restoration ecologists increase species diversity and recover ecosystem function
In forests where the invasive plant garlic mustard has been removed, native plants and animals do not recolonize because they are extinct in that patch of forest. Restoration ecologists should Develop movement corridors for primary producers to increase species diversity and recover ecosystem function.
Patches are connected by corridors, which improves the watershed's overall habitat quality. They offer relatively risk-free access for wildlife to a variety of habitat resources that are often distributed throughout the terrain and may fluctuate with the seasons and temperature. Instead of being linear habitats, movement corridors, also known as dispersal corridors or landscape links, serve as a link between at least two key habitat areas.According to certain theories, corridors for primary producers facilitate the movement of species between different habitat areas, fostering genetic exchange and lowering population fluctuations.learn more about invasive plant here: https://brainly.com/question/1542287
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Native plants and animals do not recolonize in forests where the invasive species garlic mustard has been eradicated because they are extinct in that area of the forest. To boost species variety and restore ecosystem function, restoration ecologists should create movement corridors for primary producers.
What are primary producers?Primary producers are organisms that can make their own food, such as plants and phytoplankton, through photosynthesis or chemosynthesis.
Patches are connected by corridors, which enhances the overall habitat quality of the watershed.
They give wildlife reasonably risk-free access to a variety of habitat resources that are frequently dispersed over the landscape and may change with the seasons and temperature.
Movement corridors, sometimes referred to as dispersal corridors or landscape connections, connect at least two important habitat areas rather than being linear ecosystems.
Some hypotheses contend that main producer corridors encourage species mobility between various habitat types, promoting genetic exchange and reducing population volatility.
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What will happen to blood flow if the resistance to flow increases, while the pressure gradient across a blood vessel remains constant
Answer:
As resistance to flow increases, blood flow will decrease
Explanation:
Resistance is a force that opposes the flow of a fluid. In blood vessels, most of the resistance is due to vessel diameter. As vessel diameter decreases, the resistance to flow increases and blood flow decreases.
One primitive trait of Ardipithecus ramidus is its Group of answer choices opposable big toe flat face. pelvis. hip. PreviousNext
One primitive trait of Ardipithecus ramidus is its opposable big toe
The hominin species Ardipithecus ramidus has large grabbing toes that make it better adapted for walking than chimpanzees at climbing trees. An australopithecine species called Ardipithecus ramidus lived 4.4 million years ago in the Afar area of Early Pliocene Ethiopia (mya). Contrary to modern hominids, A. ramidus has adaptations for both life in the trees and walking on two legs (bipedality) (arboreality).The anatomy is quite simple. Upper canines are evolved from Australopithecus afarensis and have a diamond form as opposed to the pointed shape seen in African apes. It appears that lower canines have less developed characteristics.learn more about Ardipithecus ramidus here: https://brainly.com/question/13930239
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. The pelvis of Ardipithecus ramidus is one of the creature's fundamental characteristics. hip; flat face oppositional toe.
1. One primitive trait of Ardipithecus ramidus is its Group of answer choices pelvis. flat face. hip. opposable toe.
2.Two evolutionary processes that may produce a cline in a human allele or trait are Group of answer choices gene flow and genetic drift. mutations and Hardy-Weinberg processes. sexual selection and natural selection. founder effect and gene flow
3. Modern humans have genes from which of the following species. Group of answer choices Neanderthals and Denisovans Habilis and Erectus Floresiensis and Naledi Afarensis and Habilis
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The nervous system is divided into the central
nervous system and the peripheral nervous
system.
Which is the responsibility of the peripheral
nervous system?
A. Responding to stimuli
B. Pumping blood throughout the body
C. Supporting the body
D. Digesting food
Original Codon: CTC GAG
Mutated codon: GTC CAG
Which of the following choices refers to the appropriate amino acid of the original and mutated code?
A. Glutamic acid and Glutamine
B. Valine and Lysine
C. Serine and Isoleucine
D. Proline and Tryptophan
The original codons code for Leucine and Glutamic acid. The mutated codons code for Valine and Glutamine.
Genetic codes and amino acidsEach of the genetic codes. otherwise known as codons, translates to an amino acid.
Following the table of genetic codes with their respective amino acids:
CTC (CUC) codes for LeucineGAG codes for Glutamic acidGTC (GUC)codes for ValineCAG codes for GlutamineThus, the glutamic acid in the original codon has been replaced with glutamine in the mutated codon while Leucine has been replaced with Valine.
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If the half-life of a certain protein is 2.4 hours, how long will it take for the protein concentration to be reduced to 12.5% of its original concentration
Answer:ait will take 25 hours
Explanation:
photosynthesis Reaction
Which reactant in the photosynthesis equation is
the source of hydrogen for sugar molecules?
Answer:
when the photo state is plant used sunlight to break apart water into hydrogen and oxygen the carbonyl the resulting hydrogen with carbon dioxide from the air to create
Explanation:
during photosynthes light energy conversion Exide and water and returns into glucose and oxygen the projects for the city is the process to use make their own food at the requins of photosynthes are carmetic exercise and water
Hox genes Group of answer choices appear to function in similar ways across diverse groups of organisms. function only in fruit flies. control which amino acids get plugged into polypeptide chains. control the development of language in human
It appears to function in similar ways across diverse groups of organisms.
The Hox gene, a subset of the homeobox gene, is a group of related genes that specify the region of the embryo's body plan along the cranio-caudal axis of the animal. Hox proteins encode and specify "positional" properties to ensure that the right structure is formed in the right place in the body.
The hox genes are a subset of homeotic genes.The function of the hox genes is to control the development of the body plan of an individual during the embryonic stage.Thus, the basic body form of an organism is laid down with the help of these genes.These genes are present in many different species from fruit fly to mice to humans.The reason that they are present in different organisms is that there was a common ancestor that possessed the hox gene cluster and then the genes were passed on to different vertebrates. However, the slight changes that have occurred in these genes are due to duplication events.Learn more about Hox gene here:https://brainly.com/question/22998796
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Assertion: The factors that cause mutations are called mutagens.
Reasoning: Radiation, UV light, and chemicals are examples of mutation.
Which of the following is true for the above statements?
A. Both (A ) and (R) are true, but (R) is not the correct explanation of A.
B. Both (A ) and (R) are true, but (R) is the correct explanation of A.
C. A is false and (R) is true.
D. A is true and (R) is false.
Answer:
The following that is true about the statements is letter A, Both (A ) and (R) are true, but (R) is not the correct explanation of A.
Explanation:
A mutagen is any physical, chemical or biological agent that, when exposed to cells, is capable of inducing a mutation, that is, damage to the DNA molecule that is not repaired at the time of cell replication, and is passed on to subsequent generations.
With that being said, Radiation, UV light, and chemicals are exemples of mutagens.
Examples of mutation would be: gene or chromosomal mutations. Gene mutations can be by substitution, insertion or deletion; on the other hand, chromosomal mutations can be structural or numerical.
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In thermoregulation, blood carries heat to the ____________________ where it is lost due to evaporative cooling.
Answer:
skin capillairies
Explanation:
In thermoregulation, blood carries heat to the skin capillaries where it is lost due to evaporative cooling.
What is thermoregulation?Thermoregulation is an interaction that permits your body to keep up with its center inner temperature. All thermoregulation systems are intended to return your body to homeostasis. This is a condition of balance.
A solid inner internal heat level falls inside a thin window. The typical individual has a gauge temperature between 98°F (37°C) and 100°F (37.8°C). Your body has some adaptability with temperature. Nonetheless, assuming you get to the limits of internal heat level, it can influence your body's capacity to work.
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Wallace's "flying frog" can glide through the air through the tree canopy by using its webbed feet. This saves the effort of making its way down to the forest floor and climbing up another tree. This capability is an excellent example of...
This capability is an excellent example of Amphibians.
Definition of AmphibianAmphibians are cold-blooded, vertebrate animals that have both a terrestrial and an aquatic phase of life. They spend most of their time in the water and breathe through gills (living on land, breathing with lungs).
An amphibian is said to be cold-blooded if it is unable to produce its own heat. Instead, they fluctuate in temperature in response to their surroundings.Vertebrate refers to a category of animals that include amphibians and has a spine or backbone.Aquatic refers to being in the water. Amphibians start out in the water, using their tails to swim and their gills to breathe.Terrestrial entails being on land. Amphibians leave the water to live on land when they get older and acquire lungs and legs.The frog is arguably the most well-known species of amphibian. You likely already know that frogs.
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Select the correct answer.
What kind of solution occurs in your mouth when you eat something with a high salt content?
A.
a hypotonic solution
B.
an isotonic solution
C.
a hypertonic solution
Answer:
Explanation:
A
Which factor is not important in determining the membrane potential when there are multiple permeant ions
The sum total of all of the ions on both sides of the membrane is not important in determining the membrane potential when there are multiple permeant ions.
Membrane potential :
The difference in electric potential between a biological cell's interior and exterior is known as membrane potential (also known as transmembrane potential or membrane voltage). That is, different amounts of energy are needed for electric charges to travel from inside of cells to outside environments, and vice versa.
The equilibrium potentials of the ions to which the membrane is permeable are represented by the membrane potential. An ion's ability to carry electricity determines how much it will affect a cell's membrane potential.
The two factors which is important in determining the membrane potential when there are multiple permeant ions are :
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