Answer:
Diagram K is the answer
Final answer:
The three extant rodent species, originating from population A, underwent allopatric speciation leading to species A1 and A2. This occurred due to habitat isolation and selective pressures. The phylogeny would show a divergence first between the mainland and island populations, then another split between A1 and A2 after a river separated them.
Explanation:
In the given scenario, allopatric speciation has occurred within a population of rodents, known as population A, leading to the evolution of two new species, A1 and A2. Initially, part of population A dispersed to a nearby island, separating them from the mainland population. Due to habitat isolation, the island population ceased reproduction with the mainland population and began to independently evolve. After two million years and the introduction of a river splitting the island habitat, the island population divided into two, preventing gene flow between the two groups.
This geographical separation instigated further allopatric speciation, resulting in the formation of two distinct species, A1 and A2. The phylogeny of these rodent populations would reflect their shared ancestry and subsequent divergences. Initially, population A from the mainland would be at the base of the phylogenetic tree. The branch then separates into the island population, which later bifurcates into two distinct branches representing species A1 and A2 after the formation of the river.
Elephants are valued by some people because their tusks are made of ivory. Although it is illegal, people kill elephants, take the ivory, and sell it to make a variety of objects like jewelry and sculptures. This activity is an example of which threat to biodiversity? Poaching habitat destruction pollution nonnative species
Answer:
Poaching
Explanation:
Poaching is to kill animals illegally and sell various body parts to make huge amounts of money. Poaching threatens animal speicies and can lead to extinction, threatening the lives of many animals.
Answer:
The correct answer will be option-Poaching
Explanation:
Poaching is the illegal killing, shooting and trapping the animals in an area where such practices are completely forbidden.
Poaching is a threat to wild animals as it is one of the major cause of the loss of biological diversity on Earth as it leads to the loss of the wild animals which can make the species threatened species.
Since poaching occurs when something valuable is possessed by the animal-like elephants possess their tusks which are made of ivory.
Thus, poaching is the correct answer.
Look at the DNA segment below. GATCGT Which of the segments below would be complementary to the segment above during DNA replication?
Answer:
CTAGCA
Explanation:
During DNA replication, the DNA double helix is unwound by DNA helices. Each original strand is then used as a template, by the DNA polymerase, to synthesize a new strand. Base pairing rules apply in the synthesis. Cytosine pairs with Guanine while Adenine pairs with Thiamine.
Difference in the classification level of plants and animals?
Answer:
Plants are classified different than animals because of the large central vacuole and they are autotrophs and the most important thing is that they have a cell wall and they go through photosynthesis. Animal cells are a little less complex and they are heterotrophs they do not have a cell wall and they dont have the large central vacuole and they dont have the ability to go through photosynthesis. ......Hope this helps :/
Explanation:
when did the phanerozoic Eon begin
Answer:
541 million years ago
Explanation:
The Phanerozoic Eon is the most recent eon. It started 541 million years ago, and it still lasts, thus we are living in this eon as well. The Phanerozoic Eon has seen lot of changes, from explosion of the life, to big catastrophic events, big changes in climate, changes in the continents and oceans, and most recently the appearance of the most intelligent species, the humans. Through this period the Earth has been dominated by fish, sinapsids, dinosaurs, mammals, all having their fair share of dominance on the planet. The continents have been constantly on the move, creating supercontinents on multiple occasions, but then falling apart and creating numerous small ones. There has been multiple mass extinctions as well, some caused by intense volcanic activity, some by meteorite impacts.
There is a liquid capsule inside a cup full of liquid. The cup full of liquid has salt in it and the liquid capsule has no salt in it. In which direction will the solvent flow?
A. The salt does not have to move
B. Equally between the capsule and the cup
C. From the larger cup to the capsule
D. From the capsule to the larger cup
Answer: Option 'C' is correct.
Explanation:
There is a liquid capsule inside a cup full of liquid. The cup full of liquid has salt in it and the liquid capsule has no salt in it.
The solvent will flow from the larger cup to the capsule due to movement from hypotonic solution to hypertonic solution.
According to given situation, liquid capsule is a hypotonic solution because the concentration of solute in liquid capsule is greater than outside of it.
As the liquid capsule does not have solute.
And cup full of liquid having salt has lower concentration, so, it is a hypertonic solution.
Since, Solvent move from from the larger cup to the capsule as the movement happens from hypotonic solution to hypertonic solution.
Hence, Option 'C' is correct.
Final answer:
The solvent will move from the larger cup with saltwater into the salt-free liquid capsule because osmosis drives water from an area of lower solute concentration to an area of higher solute concentration.
Explanation:
When considering a liquid capsule with no salt inside a cup full of saltwater, the direction of solvent flow is governed by osmosis. Osmosis is the movement of a solvent, such as water, across a semipermeable membrane from a region of lower solute concentration into a region of higher solute concentration. In this scenario, since the salt cannot move across the capsule membrane, the water will move to equilibrate the concentration difference.
The correct answer to which direction the solvent will flow is: C. From the larger cup to the capsule. This is because the liquid in the larger cup has a lower water concentration due to the salt dissolved in it, making it a solution of higher osmolarity. Consequently, the solvent (water) will move into the liquid capsule, which has a higher water concentration (lower osmolarity).
Which of these hormones acts in opposition to diuretics such as alcohol? adh glucagon hgh fsh?
Answer:
hgh.
Explanation:
Answer: Glycogen
Explanation:
I had this question before.
Which of the following correctly explains the difference between evolution and natural selection?
Natural selection and evolution both occur at the individual level of an organism.
Natural selection occurs to individuals in a population over time and evolution occurs to entire populations on a longer time scale.
Evolution occurs to individuals and natural selection occurs to populations on a longer time scale.
Evolution and natural selection both occur to individuals within a population on a relatively short time scale.
Answer:Natural selection occurs to individuals in a population over time and evolution occurs to entire populations on a longer time scale.
Explanation:
''Natural selection occurs to individuals in a population over time and evolution occurs to entire populations on a longer time scale'' is the correct statement.
What is the difference between evolution and natural selection?Evolution is a change that occurs in the inherited traits of a population over many generations while on the other hand, Natural selection is a mechanism where the members of a population best suited to their environment survived and to pass on their genes to their offspring.
So we can conclude that option B is the correct statement.
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How far can you flick a booger?
This is a very important question. Depending on the speed and the angle it was flicked, how far can it go??
Answer:
up to 7 yards (21 feet)
my brother actually measured this lol
What is NOT an example of the body systems trying to maintain homeostasis?A) laughterB) hyperventilationC) shivering and goose bumpsD) increased heart rate
Answer:
A
Explanation:
A is the right answer
The assembly of transcription factors begins
Answer:
it begins when it begins
Explanation:
Upstream from transcription start site
Which of the following is a way that the body determines how much of a certain chemical, protein, enzyme, or response is needed to maintain homeostasis?
A. Signal loop
B. Feedback inhibition
C. Kickback inhibition
D. Resource limitation
Answer:
A
Explanation:
Signal loop is composed of negative and positive feedback mechanisms. The positive feedback increases the change in the system while the negative feedback reduces it. The ideal balance between the two feedback loops is called homeostasis.
Answer:
B. Feedback Inhibition
Explanation:
Just took the test and got it correct!
plz help quickly!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Sickle-cell disease is an autosomal recessive disorder that causes the red blood cells of an affected person to be rigid and abnormally shaped. The life expectancy of a person affected by the disorder is approximately 45 years. Carriers of the disease produce some sickled cells, but not enough to be symptomatic.
Malaria is a potentially fatal disease caused by the protist Plasmodium falciparum.
Studies have shown that those affected by sickle-cell disease (genotype ss), as well as carriers who possess only one sickle-cell allele (Ss), are much more resistant to malaria than those with homozygous dominant genotypes (SS). This resistance is created in part by the rupturing of any sickled red blood cells that are infected with the parasite, preventing Plasmodium falciparum from reproducing and making it more susceptible to the host's immune system.
Which of the following statements best predicts what would happen in response to a prolonged epidemic of malaria in a population with no previous exposure to malaria?
A. The frequency of the homozygous recessive genotype (ss) would decrease.
B. The frequency of the dominant allele (S) would increase.
C. The frequency of the sickle-cell allele (s) would increase.
D. The frequency of the homozygous dominant genotype (SS) would increase.
Explanation:
Sickle cell disease is a group of disorders that affects hemoglobin, the molecule in red blood cells that delivers oxygen to cells throughout the body. People with this disorder have atypical hemoglobin molecules called hemoglobin S, which can distort red blood cells into a sickle, or crescent, shape.
Signs and symptoms of sickle cell disease usually begin in early childhood. Characteristic features of this disorder include a low number of red blood cells (anemia), repeated infections, and periodic episodes of pain. The severity of symptoms varies from person to person. Some people have mild symptoms, while others are frequently hospitalized for more serious complications.
The signs and symptoms of sickle cell disease are caused by the sickling of red blood cells. When red blood cells sickle, they break down prematurely, which can lead to anemia. Anemia can cause shortness of breath, fatigue, and delayed growth and development in children.
Answer:
D. The frequency of the homozygous dominant genotype (SS) would increase.Answer: the correct answer is C. The frequency of the sickle-cell allele 9s) would increase.
Explanation:
Which ones, multiple answers
Answer:
The true answers are,
All Scientific endeavors are supported by evidence
All Scientific endeavors involve observation
All Scientific endeavors involve experimentation
All Scientific endeavors involve collection of information
Explanation:
Scientific endeavors are the work or attempts done by scientists.
False statements:
All scientific endeavors are time consuming is not true because due to modern technology there are several things we can do without spending much time. All scientific endeavors are expensive is also not true. All scientific endeavors are a systemic process is not true because during scientific experimentation the outcome of these experiments will determine the next step. we can not make a concrete plan for a scientific endeavor, however we may predict something.
True statements:
Weather we get a positive result of negative result of a scientific endeavor it is always supported by an evidence and these results are obtained by observations and experimentation. Finally the collection of information is very important to prove the results.
Neptune _____.
is about 5 AU from the sun
is the only outer planet without rings
was the first planet to be discovered using a telescope
was predicted by abnormalities in Uranus' orbit
Answer:
a I think far from the sun
Explanation:
hopefully this will help
Answer:
D
Explanation:
It is 30 AUs so the first answer is incorrect.
It does have rings although they are fragmented and very hard to see. B is wrong.
No Neptune was not the first to be discovered by telescope. Uranus was.
It was found because it did cause abnormalities in Uranius' orbit.
For yeast fermenting glucose to ethanol, which form or forms of labeled glucose would give the most radioactivity in CO2 and the least in ethanol? Match the positions from the column to the appropriate blanks in the sentences. C2 and C3 C6 C2 C1 and C6 C4 and C5 C3 C1 C3 and C4 C4 C5In the glycolytic pathway, fructose-1,6-bisphosphate (FBP) contains one phosphate each at ______. Six carbon containing FBP is acted upon by aldolase to yield two triose phosphates: dihydroxyacetone phosphate (DHAP) and glyceraldehyde-3-phosphate (GAP). The __________ bound phosphate along with phosphate-bound Jformation of pyruvate. The ________ of FBP forms DHAP, while along with of FBP form GAP. Subsequent reaction steps result in the end of DHAP or end of GAP end up as _________ of pyruvate, which yields CO2 as it gets dehydrogenated to acetaldehyde. The acetaldehyde is converted to ethanol in the presence of alcohol dehydrogenase and NADH. Hence, _______ form of labeled glucose would give the most radioactivity in CO2 and the least in ethanol.
Answer:
the answer is get this stuff away from me my brain is hurting
Explanation:
Are muscle cells controlled individually or in groups
Answer: sorry
THey are controlled as a group try flexing only one part of your body and other parts will flex to.
Explanation:
Muscle cells, especially those in skeletal muscle, are controlled in groups by the nervous system via motor units. Each motor unit includes a single motor neuron and the muscle fibers it controls. The control and type of muscle cell varies, with skeletal muscles being voluntarily controlled, and cardiac and other muscles being involuntarily controlled.
Explanation:Muscle cells, particularly skeletal muscle cells, are typically controlled in groups, not individually. This control is conducted by the nervous system through what are known as motor units. Each motor unit consists of a single motor neuron and all of the muscle fibers it innervates, or controls. For example, with powerful muscle contractions, such as those seen in the quadriceps, many fibers are controlled by a single motor neuron. On the other hand, for movements that require precision but not much force, like the movement of the eyes, each motor neuron controls only a small number of fibers.
It's also important to distinguish between different types of muscle. Skeletal muscle, which is attached to bones and sometimes the skin, can be consciously controlled and is thus termed voluntary muscle. These muscles are responsible for locomotion and all other movements that we can control at will. In contrast, cardiac muscle and other involuntary muscles cannot be consciously controlled.
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Penetrance specifically refers to the expression of lethal genes in heterozygotes. True or False
Answer:
False
Explanation:
Your family is driving across the country to the Grand Canyon. What type of pollution is your car producing?
A. Mobile source
B. Stationary source
C. Agriculture source
D. Natural source
Answer:
Option A, Mobile source
Explanation:
A mobile source of pollution pollutes the environment while moving. It does not stay at one constant position like a chimney of industry or a stationary machine releasing pollutant gases. Hence, all the moving vehicles, automobiles, diesel engines etc. which release harmful things thereby degrading environment are called mobile source of pollution. Thus, a car releasing pollution while driving through the Grand Canyon will be considered as mobile source of pollution.
Answer:
Mobile source
Explanation:
To determine the growth rate of a population, the number of births and deaths are factored in to an equation. What other factors are put into the growth rate equation?
A.) density and carrying capacity
B.) immigration and emigration
C.) marriages and divorces
D.) the number of twins and triplets born
Answer:
I think it's B
Explanation:
Well since we are trying to determine the growth rate of a population, we need to also find out immigration and emigration rate.
Hope this helps chu
Have a great day
One of the major categories of receptors in the plasma membrane reacts by forming dimers, adding phosphate groups, and then activating relay proteins. Which type does this?
A) chemically-gated ion channels
B) G protein-linked receptors
C) cytoplasmic receptors
D) protein kinase receptors
Answer:
D) protein kinase receptors
Explanation:
Protein kinase receptors are simply saying receptors with associated kinases (usually tyrosine kinases).
Protein kinases are enzymes that have the ability to modulate other enzymes (or some other proteins) by adding the phosphate group. This is known as phosphorilation process. As a result of structural change, protein can change its activity (phosphorilation usually increase the activity).
Such receptors are involved in a many signaling cascades.
The receptors that react by forming dimers, adding phosphate groups and activating relay proteins are the protein kinase receptors. These receptors respond to ligand binding by dimerization and phosphorylation triggering a cascade of cellular responses.
Explanation:The major category of receptors in the plasma membrane that reacts by forming dimers, adding phosphate groups, and then activating relay proteins is the protein kinase receptors. These receptors are known for their enzymatic activity that activates a cascade of events inside the cell. The process begins when a ligand, or a signaling molecule, binds to the receptor. This binding induces the dimerization (pairing of two receptor molecules), followed by the addition of phosphate groups to certain amino acids within the receptor. This phosphorylation activates the receptor and triggers the activation of other proteins within the cell, leading to a series of cellular responses.
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Pancreatic digestive juices are carried by
Answer:
The pancreatic duct
Explanation:
Pancreatic digestive juices, consisting of enzymes and bicarbonate, are carried to the small intestine via the primary pancreatic duct and the accessory duct, assisting digestion.
Pancreatic digestive juices, which contain a mix of enzymes and bicarbonate, are essential for digestion in the small intestine. These juices are produced by the exocrine cells of the pancreas and travel through the pancreatic ducts to reach their destination.
The main pancreatic duct joins with the common bile duct to form the hepatopancreatic ampulla, which controls the release of both pancreatic juice and bile into the duodenum.
Additionally, there is a secondary duct known as the accessory duct, or duct of Santorini, which may directly connect the pancreas to the duodenum.
Which of the following types of boundaries is most likely to result in a subduction zone? a. divergent b. convergent c. transform d. all of the above
Answer:
b. convergent
Explanation:
The convergent boundaries are the ones that usually result in a subduction zone, especially when it comes to a convergent boundary between an oceanic and continental tectonic plates. In this type of boundaries, the oceanic plate moves beneath the continental plate, and the reason for this is that it is lower and denser then the higher and less dense continental plate. As the oceanic plates moves beneath the continental plate it reaches the mantle layer in which it is melted. Ont his type of boundaries it is very common that there's lot of volcanic and earthquake activity, as it can be seen in the ''Ring of Fire''.
Answer:
B) Convergent
The best action humans can take to decrease the effect of harmful growth and reproduction of algae is to
ban the use of fertilizers.
decrease crop production.
control the use of fertilizers.
use other chemicals.
Answer: Control the use of fertilizers.
Explanation:
The fertilizers are the chemical or biological formulations which contains necessary inorganic and organic minerals which a soil generally lacks but required by the plants for proper growth and crop production.
The increase in use of fertilizers can cause pollution of land and water. Due to surface runoff the minerals present in the fertilizers are added to the neighboring water body which results in excess growth of plants and algea due to availability of nourishment. This phenomena is called as eutrophication.
Therefore, the use of fertilizers should be in control amounts so that it cannot cause eutrophication.
Answer:
control use of fertilizers
Explanation:
got it right edge 2021
Negative aspects of political parties include a. party labels that give information about a candidate's opinions b. educating the public about important issues c. governing in their own interests rather than the public interest d. the organization of Congress around committees
C) governing in their own interests rather than the public interest
Hope this helps chu
Have a great day
The antibiotic tetracycline exploits the differences in _______ between prokaryotes and eukaryotes.
hi my name is ship thuck
A gene has a base sequence of AGA. Due to a mutation, the base sequence changes to AGG.
What amino acid is coded for by this sequence before the mutation? Hint: Use the codon table.
Answer:
Arg
Explanation:
Answer: The amino acid coded by AGA is Arginine
Explanation: in order to learn about amino acids we first need to understand the genetic code
What is the Genetic Code?The genetic code is a set of rules by which Genetic information stored in DNA and RNA is converted into proteins to carry out Physiological functions. The DNA and RNA are made up of Nucleotides namely:
adenosine monophosphateguanosine monophosphatethymidine monophosphate andcytidine monophosphateDuring the process of transcription the genetic material in Double Stranded DNA gets transcribed to a single Stranded mRNA which enters the rRNA for Translation into a sequence of amino acids. Information inside rRNA is read in a sequence of 3 bases called Codons.
What are Codons?A codon is a set of 3 N-bases read together during the process of translation, which corresponds to one amino acid.
Characteristics of codons.They are comma-less and read in a continuous and non-overlapping fashion.The code is Unambiguous i.e. only one amino acid is coded by a codon. This can be found from the codon tableMultiple codons may code for a given amino acidProtein synthesis always begins at AUG. This codon is known as the Initiator Codon and codes for the amino acid Methionine.Translation ends when a stop codon is encountered. There are 3 stop codons UAA, UGA and UAGso in the given question the amino acid coded by AGA is Arg which is the 3 letter abbreviation for Arginine. After mutation the amino acid coded by AGG is also Arginine(see the codon table). Thus this mutation is a mis-sense mutation as there is no change in amino acid sequence.
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One of the most common types of bacteria-related diarrhea in the united states, resulting primarily from the ingestion of contaminated water, raw milk, and raw or undercooked meats, is caused by:
a. salmonella
b. campylobacter
c. listeria.
d.
e. coli.
The answer is a I believe
A vector is an organism that transfers a pathogen to a host. in the case of malaria, the vector(s) is(are) ______.
Answer:
Anopheles mosquitoes only
What roles do the additional leachate management and gas collection systems play at Fresh Kills?
Answer:
“Landfill Systems: Final Cap, Landfill Gas Control Collection, Leachate Control Collection and Cleaning, Stormwater Basins, Monitoring Systems”
Landfill gas is comprised of methane, carbon dioxide, water and other organic compounds. The Landfill Gas (LFG) System on site collects and controls gas emissions through a network of wells connected by pipes below the surface that convey the gas through a vacuum. Once collected, the gas is processed to pipeline quality (recovery for domestic energy use) at an on–site LFG recovery plant. Gas emissions, non–methane organic compounds (NMOCs) and other hazardous pollutants are reduced by almost 100%. LFG and its odor are prevented from entering the atmosphere. In addition to this active gas collection and recovery system, an additional safety system is in place to prevent the migration of gas off–site.
Leachate
Leachate is the liquid by–product of the breakdown of household waste. Once the final cover is placed on the landfill, the quantity of leachate produced diminishes considerably because the amount of water that comes in contact with waste is minimized. The goal of the leachate management system is to remove pollutants by containment, collection and treatment of leachate before it reenters the environment. All treated water is cleaner than the nearby Arthur Kill.
Explanation:joo is welconme
Leachate management and gas collection systems at Fresh Kills are essential for environmental protection and energy recovery. They prevent groundwater contamination and capture biogas for use as a sustainable energy source.
The leachate management system ensures that liquid byproducts, which may contain hazardous substances, are properly contained and treated instead of contaminating groundwater. The gas collection system captures biogas, a mixture of primarily methane and carbon dioxide, which is a byproduct of anaerobic waste degradation. This gas can be used as a biofuel, often for heat or electricity generation, instead of being released into the atmosphere as a greenhouse gas. With the design of modern engineered landfills, such as Fresh Kills, these systems are integral components. Proper function of these systems allows landfills to be repurposed for beneficial use after closure, such as being transformed into recreational parks or golf courses. In summary, leachate and gas collection systems serve to protect the environment from potential pollution and support the sustainable use of non-renewable resources by transforming waste into energy.
Which of the following most accurately describes the pharynx?
Answer:
The pharynx, or what we know as the "throat," is a dual duty body part. It has the job of both swallowing/ moving food to the esophagus. It is also the channel that allows air from your nasal/ oral cavities to flow down to your larynx, or voice box.
Hope this helps!
Answer:
It is the passageway for both food and air
Explanation:
The pharynx is also known as the throat, and it contains passageways for both food and air. When food is swallowed, a flap of cartilage called the epiglottis presses down to cover the opening to the air passageway.