. A researcher studies the evolutionary relationships between influenza viruses by comparing the genomic sequences of the viruses found in pigs, ducks, and humans in a given year. When evaluating the viruses that had infected these hosts the previous year, she identifies a cross-species transfer from humans to pigs. This information supports the hypothesis that cross-species transfer leads to more severe disease if during the previous year _______ suffered a severe influenza pandemic.

Answers

Answer 1

Answer:

pigs

Explanation:

Influenza is an infectious disease caused by influenza viruses, which can be divided into four types A, B, C and D. In humans, influenza A and B viruses are known to cause epidemics, while A viruses are known to cause pandemics. Influenza viruses are also found in birds and mammals (e.g., dogs, cats,  cattle pigs and horses). Cross-species virus transmission refers to the transmission process of infectious viruses between hosts from different species. Several viruses that may cause severe diseases in humans have originated from animal species, e.g., avian influenza A virus that can be transmitted to humans through an intermediate host (e.g., pigs). Other examples of cross-species virus transmission include the Ebola virus and Hantaviruses. It has been suggested that cross-species transmission is a common phenomenon in rapidly evolving viruses.


Related Questions


Hi can you help please help me with this

Answers

Answer: D someone running at a constant speed and direction

Explanation:

Principales of Biotechnology
What are the units you guys have? I want to study them

Answers

Some units includes  Tools and Processes of Recombinant Technology which consists of many topics of DNA, ligase, PCR.

If you are interested in learning about the Principles of Biotech, you could get a headstart on khan academy. It'll help you prepare.

Please help!
We spent quite a bit of time discussion the various types of vaccines available this week, and how each of them compare and contrast with each other. However, ALL vaccines have a common purpose, regardless of how they aim to accomplish it. In YOUR OWN WORDS, tell me what that common purpose is. This is a short answer question and should be answered in a sentence or two, maybe three at the most.

Answers

Answer:

All vaccines work together to accomplish one main task and that is to prepare your body incase it gets invaded with a harmful virus that could cause you to get very sick. Vaccines are weak forms of the virus that are injected into humans so that the body can start creating the right antibodies to defend the body against the harmful virus.

I hope this helps! :)

3) Write 3 sentences that explain how limiting factors can change the carrying capacity of
an ecosystem? (hint think in terms of a food web)

Answers

Answer:

Explanation:

human activities should no be more than the capacity of ecosystem

we should pay attention to carrying capacity of eco system

another one i don't no sorry for that

hope you like my answer and hope it helps you

1. Would the pollution problems caused by cars and trucks be completely solved if they all became electrically powered overnight?

2. Name one challenge we need to overcome by using solar panels

Answers

Answer:

1.This doesn't help COMPLETELY get rid of pollution. It might help lessen the pollution, but it definitely won't solve it, because there are also other things that cause pollution.

2.The main problem with solar power that has stifled its use is the fact that energy production only takes place when the sun is shining. And it won't be beneficial to the countries that aren't really close to the equator ( the middle east) and that might be a problem cause there just might not be enough energy/electricity.

Janine’s hands are larger than her father’s hands. Which explanation can account for the difference in hand size between father and daughter?
Janine’s large hands may be the result of a genetic mutation.
B
Janine inherited her mother’s hand size.
C
The difference in hand size may be due to an environmental cause.
D
Though some of the above are more likely than others, all of the above are possible explanations.

Answers

Answer:

D or b

Explanation:

Choose between those

Which cell has the largest problems due to surface area limitations

Answers

Answer:

Terms in this set (217) Thinking about the surface of cells, which of these cells has the largest problems due to surface area limitations? Eukaryotic cells are 10-100 times the size of prokaryotic cells.

6. Define allele, please help me out

Answers

Answer:

allele is the pair of gene controlling the pair of contrasting characteristics

Answer:

each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

hope this answer helps you!

Cilia are involved in the transfer The genetic information from one bacterial cell to another

Answers

Answer:

False.

Explanation:

No, Cilia are not involved in the transfer of the genetic material from one bacterial cell to another. The pili are the structure which is responsible for the transfer of genetic material from one bacteria to another. This transfer can only occur for those types of bacteria that possess a special plasmid that is responsible for the formation of pilus which leads to the transfer of genetic material. If the special plasmid is not present so there will be no tranfer of genetic material from one bacteria to another.

At rest the lens of the eye will be more round when the ciliary muscles are contracted true or false

Answers

Answer:

True.

Explanation:

Yes, the lens of the eye will be more spherical when the ciliary muscles are contracted due to tension. When the relaxation occurs in the ciliary muscle , the zonular tension is increased, that causes the lens to be flatten and leads to decrease in optical power while on the other hand, when the ciliary muscle contracts, the tension in the equatorial zonular is increased which causes the central lens surface to become more rounded that leads to increases central optical power.

[20 POINTS!!!!!]
which scenario would lead to the biggest increase in rabbit population?
increase in food supply and decrease in predators.

increase in food supply and predators.

decrease in food supply and increase in predators.

decrease in food supply and predators.

Answers

A is the correct answer!Increase in food supply = more food = BIGGER POPULATIONDecrease in predators = more living rabbits = more reproductionThis scenario is VERY bad for the ecosystem and the rabbit population in the long term.

The scenario that would lead to the greatest increase in the rabbit population is increased food supply and decreased predators.

What are predatory animals?

Predatory animals are animals that feed on other animals. They occupy the top of the food chain and are therefore found in smaller numbers. Predators are usually large, agile and adapted for hunting. A good predator is not known just by its size.

With this information, we can conclude that the scenario that would lead to the greatest increase in the rabbit population is increased food supply and decreased predators.

Learn more about Predatory in brainly.com/question/12751629

5. Radioisotopes
Radioisotopes are isotopes that are radioactive—they spontaneously emit energy (or radiation) when their nucleus breaks down. The term for this process is radioactive decay. When the process involves a change in the number of protons in the nucleus, the atom can change into another element. In one type of radioactive decay, a neutron in the nucleus splits into a proton and an electron. This split decreases the number of neutrons by one and increases the number of protons by one, but since protons and neutrons have approximately the same mass, the mass number stays the same. Since the number of protons changes, the atom becomes a new element.
Carbon-14 has 8 neutrons and 6 protons. When this radioisotope undergoes the radioactive decay process discussed above, it becomes nitrogen-14.
The number of protons in nitrogen-14 is?

Answers

Answer:

7

Explanation:

The number of proton becomes 7 in nitrogen- 14 because there is one proton increase in the nucleus as a result of radioactive decay. There are 6 number of protons and 8 number of neutron in the nucleus of carbon-14 isotope. when the radioactive decay occurs, there is decrease occur in neutron number by removing one neutron and number of proton increases in the nucleus due to addition of one proton so that's we can say that the number of proton in nitrogen-14 is 7.

The amphibian heart has a single, undivided ventricle, two atria, a sinus venosus, and a Conus arteriosus. Their sarcopterygian ancestors had hearts with all of these chambers, but the ventricle was partially divided and probably aided in separating pulmonary and systemic circulatory circuits. Check the following statements that could help us understand why amphibian evolution resulted in the loss of the partial ventricular septum.
A .The loss of the ventricular septum probably occurred because blood returning to the heart of amphibians bypasses the ventricle being shunted from the sinus venasus and right atrium directly to the pulmonary artery and lungs.
B. Loss of the partial ventricular septum reflects the fact that blood returning to the heart from the systemic circuit is often highly oxygenated because many amphibians rely on cutaneous and buccal gas exchange, as well as pulmonary gas exchange, much of the time.
C. Mixing of blood from the lungs with blood from the body in the ventricle is not a problem. Loss of the partial ventricular septum is not a problem because the spiral valve keeps systemic and pulmonary blood separate within the ventricle.
D. The Conus arteriosus of the amphibian heart receives blood from the right atrium and passes the blood on to the pulmonary circulation. This keeps oxygenated and nonoxygenated blood separate.
E. The slightly asynchronous contraction of left and right atria help keep systemic and pulmonary circuit blood separated in the ventricle.

Answers

Answer:

D. The Conus arteriosus of the amphibian heart receives blood from the right atrium and passes the blood on to the pulmonary circulation. This keeps oxygenated and nonoxygenated blood separate.

Explanation:

The conus arteriosus plays an important role in directing blood into the correct arterial arches in amphibian which keeps oxygenated and nonoxygenated blood separate from one another. The Conus arteriosus of the amphibian heart receives blood from the right atrium chamber of heart and passes the blood on to the pulmonary circulation which keeps oxygenated and nonoxygenated blood separate from each other and there is no need for partial ventricular septum.

HELP ME PLEASE!!!!!!

Answers

Answer:

C of course

Explanation:

hiw has human trafficking displayed itself in communities.

Answers

Explanation:

Human trafficking is causing a serious threat.It is the trade of humans,most commonly for the purpose of sexual slavery,forced labour or commercial sexual exploitation for the trafficker or others.The business is started with foreign employment,marriage,travelling to beautiful cities etc and such illiterate and poor people are lured by them.Thus,it has displaced a negative impact and a questioning glance to the people about human kind and humanity.

Rewrite as a simplified fraction. 1.5¯ = ?

Answers

Answer: 1 1/2

Explanation:

3 alternative energy sources
sun, wind, atomic energy
sun, wind , rain
coal, oil, gas
atomic energy, coal, wind

Answers

2. sun, wind, rain
i think it’s that

what are two different events that occur during metaphase?​

Answers

Answer:

The next two major events that take place in mitosis are the alignment of chromosomes at the center of the cell and the subsequent separation of sister chromatids to opposite mitotic spindle poles. These two events occur in metaphase and anaphase, respectively.

Explanation:

may we please hel me​

Answers

Answer: 17. epiglotti. 18. Salt. 19. 37 degrees celsius.  brainliest??

Explanation:

Leucine biosynthesis occurs in a multistep pathway starting from 2-oxovalerate, and the final product of the pathway (leucine) inhibits the first enzyme involved in the biosynthetic pathway through a process called feedback inhibition. This enzyme inhibition occurs, regardless of whether or not the 2-oxovalerate substrate is bound in the active site of the enzyme. Describe what type of inhibitor leucine is and justify your response.

Answers

Answer:

it is a type of mixed inhibition referred to as 'non-competitive inhibition'

Explanation:

Mixed inhibition occurs when an inhibitor binds to the enzyme in a site different from the active site where the substrate binds (i.e., the allosteric site). The term 'mixed' is because this inhibition is a mixture of competitive inhibition, where the inhibitor competes with a substrate to bind to the enzyme, and uncompetitive inhibition, where the inhibitor binds only to the complex formed between the enzyme and its substrate. In competitive inhibition, the maximal velocity of the reaction (Vmax) does not change, whereas the apparent Km (i.e., the concentration of substrate which permits the enzyme to achieve half Vmax) increases. ​Moreover, in non-competitive inhibition, the Km does not change, whereas the Vmax decreases. Non-competitive inhibition is a special type of mixed inhibition where the apparent Vmax (V app-max) is reduced, while the Km of the enzyme is unaffected.

how does energy drive the cycling of matter through different geological processes?

Answers

Answer:

Here is the link to answer

Explanation:

bit. ly/3a8Nt8n

Proteins are made in organelles called _____.

ribosomes


Golgi bodies


DNA

chloroplasts

Answers

Answer:

Ribosome

Ribosome: a cellular organelle that is responsible for making proteins

A hypotonic solution has a lower concentration of solutes than a blood cell. Explain what
happens when a blood cell is placed in a hypotonic solution.

Answers

The blood cell swells with water there by bursting.

Which is transported in the xylem of a plant?
A. Dead material
B. Nutrients
C. Chloroplast
D. Blastocysts

Answers

Answer:

B. Nutrients

Hope this helped! :)

Two parents, both heterozygous (Tt) and tall, are
crossed to produce offspring. What are the possible
genotypes and phenotypes of the offspring?

Answers

Answer:

1:2:1 is the ratio

Explanation:

well if you draw a punnet square you will get TT Tt Tt tt

Answer:

1:2:1 is the ratio

Explanation:

The frequencies of the color trait among rabbits living in a mountainous area have changed over time. What type of selection most likely occurred?
a. directional
b. disruptive
c. stabilizing
d. sexual

Answers

Question:

The frequencies of the color trait among rabbits living in a mountainous area have changed over time. What type of selection most likely occurred?

a. directional

b. disruptive

c. stabilizing

d. sexual

My answer/thought:

I believe your answer is C. stabilizing. :)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Hope this helps! if not, correct me. :) if it is, brainliest is appreciated to get to virtuoso

--siveth

Which mammal is not a marsupial?

anteater
kangaroo
opossum
wallaby​

Answers

i’m pretty sure it’s a!
An anteater is definitely not

How does a medicine like Benadryl (a medicine taken to suppress allergy symptoms) affect the immune system?

Answers

It kills of the virus while strengthening the immune system

Main idea: In a solar eclipse the moon blocks out the sun.
Which of the following details supports the main idea?
A.
A solar eclipse is magnificent.
B.
The atmosphere of the sun is called the corona.
C.
The moon casts a shadow on the earth.
D.
The moon casts a shadow on the sun.

Answers

C. Since the moon blocks out the sun, this casts a shadow on the earth.

The rest of the group agrees with your conclusion that Dr. Tamm was likely exposed to a membrane uncoupling agent. Uncoupling agents allow protons to cross the inner membrane of the mitochondria, down their concentration gradient, without passing through ATP synthase. Consider that each respiring cell has a need for a certain amount of ATP, but in the presence of a membrane uncoupling agent, the proton gradient that is generated by the ETC is being partially dissipated without any ATP being made. How do you think the activity of other metabolic pathways might change in response

Answers

Answer:

No more reactions occurs.

Explanation:

The activity of other metabolic pathways also change in response to the proton which enters mitochondria without passing through ATP synthase because ATP synthase is responsible for the production of ATP molecules from proton. If this ATP is not produced no further reactions occurs in the cell. This ATP is used by the cells in various activities so if the proton does not pass through ATP synthase then no energy in the form of ATP is present for other metabolic pathways of the cells.

Other Questions
4. The three angles of a triangle measure x, y and 39. Which of the following statements must be true?A. y=x+39b. y+x=180-39C. x+y=39D. y=180-x John Jaya.Secretary of the Treasuryb.Secretary of Statec.Secretary of Ward.Chief Justice Help me please! If its right Ill give brainliest 21. What are the individual ion22. If the C2H302 ion concentration in a solution is 0.554 M, what is the concentration ofCa(C2H2O2)2? Book is to booklet as ring is to ?? Which point best represents 3.3 PLZ HELP NO LINKS! WILL GIVE BRAINLIEST!There are 6500 people in a certain area. The area is growing at a rate of 3.5%.Use the formula A=Pertto calculate the time it would take for the area to reach 11500 people. Calculate the solution for t to the nearest tenth using logarithms. A laser pointer in the shape of a cylinder is 13 centimeters long with a radius of 0.75 centimeters.What is the volume of the laser pointer?Express your answer in terms of and round to the nearest cubic centimeter. PLS HELP NOOO LINKS pls When Mikhail Gorbachev became the Premier of the Soviet Union in 1985, he pivoted to a policy of...Choose 1 answer:(Choice A)Athe relentless expansion of Soviet borders and political influence.(Choice B)Bopenness and political restructuring.(Choice C)Cnuclear brinksmanship. In this polygon, which angle is an interior anglecbad(from left to right--D,A,B,C) Which of the following is true about the release of histamine from cells in nasal passages? All of the above It may cause increased secretion by mucous membranes. It occurs during an allergic reaction. It causes nearby capillaries to swell. A building was constructed last year for Agro Co. for use as a production facility. Construction began on January 1 and was completed on December 31. The payments to the contractor were as follows.Date Payment1/1 $300,0004/1 620,0008/1 460,00010/1 300,000To finance construction of the building, a $750,000, 10% construction loan was taken out on January 1. The loan was repaid on December 31. The firm had two sources of general debt: $400,000 note payable, 9% annual interest, and $500,000 par value bonds, 7.5% annual interest.Determine the amount of interest to be capitalized. Down syndrome is a common genetic disorder that is caused by having an extra copy of chromosome 21. Which method will show whether or not a baby has down syndrome?a. Karyotypeb. Family historyc. Genetic surveyd. Punnett square Use the drop-down menus to indicate whether each sentence is in the subjunctive mood. I would go for a walk, if it were not raining. I wish for peace on Earth. Tre requested that Monique and Jamil lead the group. Coach recommends that we run two laps around the track. PLEASE HELP NO LINKS PLEASE. A president is most likely to win passage of legislation PLZ HELP I NEED AWNSERS ASAPa statistical question anticipates that answers will vary. which of these are examples of statistical questions?A) how many computers are in the school's lab? B) how many letters are in the wrong direction? C) what are the favorite books of each member of the book club? D) how many people volunteered to help at the community's Christmas E) how many video games were purchased last year by each student in Mr.hills math class 20 grams of hydrogen fluoride gas, HF, is dissolved in 0.5 liters of solution. Determine the molarity (M). An airline knows that there are two types of travelers: business travelers and vacationers. For a particular flight, there are 100 business travelers who will pay $600 for a ticket while there are 50 vacationers who will pay $300 for a ticket. There are 150 seats available on the plane. Suppose the cost to the airline of providing the flight is $20,000, which includes the cost of the pilots, flight attendants, fuel, etc.Required:a. How much profit will the airline earn if it sets the price of each ticket at $600?b. How much additional profit can the airline earn by charging each customer their willingness to pay relative to charging a flat price of $600 per ticket? Find the perimeter and total area of the composite shape shown below. All measurements are given in inches. Use pi=3.14 in any formulas used.