Hypothesize about tumor growth. Scientists have shown that tumor growth is an example of positive feedback loops. Why is tumor growth an example of positive feedback? In your answer elaborate using the following terms stimulus, receptor, control center, effector, response.

Answers

Answer 1

Answer:

Tumor growth is a process associated with the expression of oncogenic genes

Explanation:

The tumor cells often share oncogenic receptors that are expressed during oncogenesis. For example, it has been shown that the epidermal growth factor receptor is often mutated in brain cancer cells, thereby encoding an oncogenic that is overactive. These receptors are responsive to stimulus of nearby cells and thus act as effectors that amplify tumorigenic signals. In consequence, during tumor progression, tumorigenic effector cells have an uncontrolled proliferation and antiapoptotic signals are predominant. The nucleus in the cell functions as a control center where tumor suppressor genes are transcribed to fight against such oncogenic cells.


Related Questions


Which method best helps to prevent wind erosion?

rotating crops
decreasing riverbank slopes
growing more vegetation
avoiding soil compaction

Answers

Answer:

Growing more vegetation

Explanation:

Soil erosion by wind occurs anywhere when vegetation and climatic conditions are conducive. These conditions include presence of very strong winds and when the soil is loose, dry, and is composed of fine granulated particles.

It also occurs when the soil surface is relatively smooth and there is sparse or no vegetative. It can also occur where there are large fields with no windbreak mechanisms in place.

The best way to reduce wind erosion is to keep the wind off the soil surface by covering the soil surface. This involves growing of more vegetation, either cash crops or cover crops which serves to protect the soil and keep the winds higher off the surface.

Also trees can be planted around the farms to serve as wind breaks which breaks or reduces the force of the winds.

Also, soil compaction which is the process of increasing the density of soil by packing the soil particles closer together causing a reduction in the volume of air can help to prevent wind erosion.

From the given options above, the best option would be growing more vegetation.

Practicing crop rotation serves to preserve soil nutrients and prevent diseases.

Decreasing riverbank slopes prevents erosion by water.

Avoiding soil compaction would lead to more erosion by wind.

Answer:

rotaiting crops i took the test

Explanation:

Foot-and-mouth disease virus (FMDV) causes severe disease in pigs, cattle, sheep and goats. High levels of FMDV infection can threaten the livestock industry. Which of the following statements best describes how FMDV reproduces in its livestock host? A. It uses the animal’s cellular machinery to reproduce inside the animal. B. It kills the animal and feeds on its carcass. C.It releases spores into the animal’s digestive tract. D. It produces eggs that are shed on the ground with the animal’s wastes. brainliest to the correct answer

Answers

Answer:

A. It uses the animal’s cellular machinery to reproduce inside the animal.

Explanation:

I would go with A because since it is a virus it cannot live outside the body and thus needs to rely on host's cell for metabolism as viruses are not capable of having their own metabolism.

Answer:

A. It uses the animal’s cellular machinery to reproduce inside the animal.

Explanation:

khan

Which feature is created by wave erosion?
O loess
O delta
O rill
O stack

Answers

Answer:

stack

Explanation:

A stack is a rock in the sea near a coast that is formed by wave erosion.

A feature created by wave erosion is stack. Option D. This is further explained below.

What is wave erosion?

Generally, Wave erosion is simply defined as waves creating a variety of landforms along a shoreline. Sea cliffs occur when waves erode rock, resulting in high slopes.

In conclusion, a stack is a  feature of wave erosion.

Read more about Wave

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3. The normal breaths per minute for a person is called _________________ of that person.

Answers

Answer:

Respiratory rate of that person.

Please mark me as the brainliest!

Thanks!! friend...

ully is riding a snowmobile on a flat, snow-covered surface with a constant velocity of 10 meters/second. The total mass of the snowmobile, including Sully, is 280 kilograms. If Sully accelerates to a velocity of 16 meters/second over 10 seconds, what’s the force exerted by the snowmobile to accelerate? Use F = ma, where .

Answers

Answer:

168 Newtons.

Explanation:

The computation of the force exerted is shown below:

Since the sully accelerated for a velocity of 16 m/s over 10 seconds

So the excess would be

= 16 - 10

= 6

And, the ratio of change in velocity is

[tex]= \frac{6}{10}[/tex]

= 0.6 m/s

Now as we know that

[tex]f = m\times a\\\\ = 280\ kg \times 0.6[/tex]

= 168 Newtons

Hence, the force exerted is 168 newtons

We simply applied the above formula so that the force could arrive  

Differences in blood flow during embryo development mean that identical twins (i.e. monozygotic) will develop different
a. Eye colors

b. Fingerprints c

. Blood types d.

Sexes

e. Hair colours

I can't seem to find a definite answer online, does anyone know what this is?

Answers

Answer:

The answer is D(sexes)

Explanation:

This is because monozygotic twins are genetically nearly identical and they are always the same sex unless there has been a mutation during development.

Las glandulas sudoriparas,al igual que las nefronas del riñon,llevan a cabo procesos de reabsorcion y secrecion de sustancias antes de eliminar sudor verdadero o falso

Answers

Answer:

yeet

Explanation:

what kind of cells can develop from pluripotent stem cells?​

Answers

Answer:

Pluripotent cells can give rise to all of the cell types that make up the body; embryonic stem cells are considered pluripotent. Multipotent cells can develop into more than one cell type, but are more limited than pluripotent cells; adult stem cells and cord blood stem cells are considered multipotent.

sketch and label a eukaryotic cell for animal and plant

Answers

Answer:

Here is a diagram of eukaryotic cells! hope it helps

Explanation:

To raise an arm upward, the muscle on one side of its contracts. What happens to the muscle on the opposite side of the arm? A.contracts B.relaxes C.both contracts and relaxes D.neither contracts nor relaxes

Answers

Answer:

Relaxes

Explanation:

The other side doesn’t do anything

Question 8 of 10
In what way does the nervous system connect to the skeletomuscular
system?
A. The nervous system provides oxygen to the muscles.
B. The nervous system holds the myosin and actin together.
C. The nervous system provides the calcium ions for contraction.
D. The nervous system sends signals to make muscles move.
SUBMIT

Answers

Answer: C. The nervous system sends signals to make muscles move

Explanation:make sure to like and rate.

scientific research about the carbon cycle and global warming would be most valuable if the results

Answers

Answer:

if the results are efficient in answering the problems raised in the research and if they manage to come to terms with the hypotheses.

Explanation:

As you may know, scientific research must be done through several steps that allow an experiment to be carried out in order to reach conclusions on a certain topic.

In research on the carbon cycle and global warming, it is necessary for the researcher to raise problems and questions about this topic, as well as to raise hypotheses that must be directly related to the results of the experiment. If the result of the experiment is efficient in answering the research problems and questions, in addition to being able to agree with the presented hypotheses, it means that the research has value within the scientific branch in which it fits, in addition to showing that the experiment was done correctly.

Use the drop-down menus to complete each statement
Both gonorrhea and
✓ have similar symptoms.
V is characterized by three progressive stages: primary, secondary, and tertiary.
People infected with
often have no symptoms.

Answers

For women they are mostly asymptomatic. Even when they have symptoms they will be mild compared to men but still serious for both sexs since it can cause infertility and damage to genitals. It can be tricky to categorize the stages of infection since most people who have it don’t display symptoms hence why it spreads so easily. It’s different for everyone. But If it has to be categorized it’s /primary would be pain and burning while urinating. Secondary would be yellow,white,bloody discharge from genetials,Pain and swelling of the testicals for men,. Tertiary would be infertility and sensitivity around genitalia “permanent” damage.

Answer:

in photo.

Explanation:

Which describes absorption?

Answers

Answer:

Absorption. Absorption, in general sense, is the act or process of absorbing or assimilating. In biology, absorption pertains particularly to the process of absorbing or assimilating substances into the cell or across the tissues and organs. It is done through diffusion or osmosis.

Explanation:

Answer:

A sponge

Explanation:

Because when the sponge is applied pressure around water, or air, the pressure from around the sponge sucks back into the sponge making the sponge fluffed or wet if put in water.

What set of fitness levels most likely produced the allele graph shown below?
A. Fitness of DD 60%, Dd 75%, and dd 100%
B. Fitness of DD 100%, Dd 60%, and dd 80%
C. Fitness of DD 75%, Dd 60%, and dd 100%
D. Fitness of DD 70%, Dd 100%, and dd 70%

Answers

Answer:

D. Fitness of DD 70%, Dd 100%, and dd 70%

Explanation:

Further explanation is posted as an attachment due to technical difficulties.

Answer:D

Explanation:

Who created Photo 51 ?

Answers

Answer:

Rosalind Franklin

Explanation:

Photo 51 is an X-ray diffraction image of a paracrystalline gel composed of DNA fiber taken by Raymond Gosling, a graduate student working under the supervision of Rosalind Franklin in May 1952 at King's College London, while working in Sir John Randall's group.

Have a good day and stay safe!

Answer:

One of them is Raymond Gosling

please help! Really stuck​

Answers

Metaphase is the third phase of mitosis, the process that separates duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. ... There is an important checkpoint in the middle of mitosis, called the metaphase checkpoint, during which the cell ensures that it is ready to divide.

Pea plants are tall if they have the genotype TT or Tt, and they are short if they have the genotype tt. A tall plant is mated with a short plant. Half the offspring are tall, and half are short. This allows us to conclude that the tall plant is __________.

Answers

Answer:

heterozygous

Explanation:

Match each term about wind erosion and deposition with its description.
abrasion
a deposit of fine, mineral-rich soil that is
good for agriculture
deflation
sand deposited against an obstruction
sand dune
the process by which wind moves particles
that are loose
the process by which wind wears down
solid objects
loess

Answers

loess - a deposit of fine, mineral-rich soil that is good for agriculture

deflation - the process by which wind moves particles that are loose

sand dune - sand deposited against an obstruction

abrasion - the process by which wind wears down solid objects

Plz mark brainliest :)

Answer:

abrasion- the process by which wind wears down  solid objects.

sand dune- sand deposited against an obstruction.

deflation- the process by which wind moves particles  that are loose.

loess- a deposit of fine, mineral-rich soil that is  good for agriculture.

Explanation:

edge 2020

What is the function of the cytoplasm in a eukaryotic cell?

Answers

Answer:

cytoplasm present in the cell Jelly like structure occupy the majority of volume of the cell it is function as it'set energy production , storage and manufacturing of cellular components

Answer:

The function of cytoplasm in eukaryotic cells is to hold all of the cell's organelles in a jelly-like substance.

Explanation:

The plasma membrane of the cell also helps maintain the cytoplasm of the cell and provides the organelles with a gel-like environment. The cytoplasm is the site of most cellular processes such as metabolism, protein folding, and internal transport.

3 types of protozoan diseases and their causative parasites ​

Answers

Answer:

Malaria, Leishmaniasis, and Toxoplasmosis.

Malaria is caused by Plasmodium parasites.

Leishmaniasis is caused by infection with Leishmania parasites.

Toxoplasmosis is an infection caused by a parasite that is called Toxoplasma gondii.

Which statement correctly describes the process that occurs in the thylakoid? ATP is produced in the thylakoid during light-independent reactions. ATP is produced in the thylakoid during light-dependent reactions. ADP and glucose are produced in the thylakoid during light-independent reactions. ADP and glucose are produced in the thylakoid during light-dependent reactions.

Answers

Answer:B

Explanation:

i did it on study island

Which process produces two copies of the original DNA molecule?
O A. DNA ligation
B. DNA transcription
C. DNA translation
O D. DNA replication
SUBMIT

Answers

Answer:

The answer is option D.

DNA replication

Hope this helps you

1 Point
Which of the following explains why water molecules are attracted to each
other?
A. The partially positive charge on the oxygen of one molecule
attracts the partially negative charge on the hydrogen of another.
B. The partially negative charges on the oxygen atoms of two
different water molecules are attracted to each other.
O c. The partially negative charge on the oxygen of one molecule
attracts the partially positive charge on the hydrogen of another.
D. The partially positive charges on the hydrogen atoms of two
different water molecules are attracted to each other.
SUBMIT

Answers

Answer:

C.

Explanation:

Water is made up of H20. Hydrogen has a positive charge, and oxygen has a negative one, so the water molecule is polar(meaning it has an unequal sharing of electrons). Anyway, when water molecules connect, opposites attract, so the hydrogen(positive charge), is attracted to oxygen(negative charge). This is referred to as a HYDROGEN BOND, and isn't a bond, but an attraction. It allows for all the properties of water, which are essential to life. I could go on, but I don't want to put you to sleep.

What is one disadvantage of using solar energy?
A. Solar energy produces greenhouse gases.
B. Solar panels are very inexpensive.
C. Solar energy is available only in the summer.
D. Solar panels work well only in sunny areas.

Answers

Answer:

A. Solar energy produces greenhouse gases.

Explanation:

Solar energy produces Infrared radiation. Which is the outgoing heat from earth to space during the night.

which best describes a g a m e t e

Answers

Answer:

A Gamete contains only a single (haploid) a set of chromosomes.

Explanation:

Because the two common gametes are sperm and ova

Romantic movement aspire writers such as

Answers

Answer:

Emily Dickinson

Explanation:

Emily Dickinson was a poet who was inspired by the romantic movement, she used romanticism in her poems.

Answer:

Emily Dickinson

Explanation:

emily dickinson was inspired by the romantic movement

Which of the following is the primary function of the thymus in the lymphatic system? Group of answer choices controls the development and maintenance of one class of lymphocytes engulfs pathogens monitors circulating blood carries lymph and lymphocytes from peripheral tissues to the veins of the cardiovascular system monitors the composition of lymph

Answers

Answer:

It controls the development and maintenance of one class of lymphocytes

Explanation:

The thymus controls the development and maintenance of one class of lymphocytes.

One of the primary function of the thymus is that stores it is the store of immature lymphocytes (specialized white blood cells) also called T lymphocytes where they are maintained and developed to prepare them to become active T cells, which help destroy infected or cancerous cells.

If a sperm cell were produced by mitosis rather than meiosis, the offspring receiving that sperm cell most likely would:

A. grow larger because it had extra chromosomes.

B. have fewer chromosomes than either of its parents.

C. grow poorly with an incorrect number of chromosomes.

D. have more chromosomes than either of its parents.

Answers

Answer:

d

Explanation:

i took the test

A dependent variable is:
A measured to show the effect of a change
B kept the same to make and experiment a fair test
C collected to draw conclusions
D changed to test a hypothesis

Answers

Answer:

A. measured to show the effect of a change

Explanation:

A dependent variable is the variable tested in an experiment to show how the change in the independent variable affects the dependent variable.

Answer:

Dependent variable is the variable that changes. It is the only thing that changes in an experiment. That way the if a change occurs the reason is obvious because only one thing changed. The answer would be A.

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(5) Although the high schoolrequirement of one hundred hours seemslong, students can fulfill it over four years. (6)In the first sentence, to add a claimAfter sentence 2, as a transitionDONE Ahmad makes compost by mixing 0.5kg of sand with 2kg of peat. Write the ratio of sand to peat. Give your answer in its simplest form. Imagine you were going to run an Indian boarding school like the Carlisle Indian School. What would you do to convince people to attend? Think about the classes you would offer, the living conditions you would provide, and the culture of this type of school that would be attractive to students at the time period. State your case in a two to three paragraph essay. If a neutral acid donates a proton, the conjugate base will have a charge of _______. - Type both an integer and a sign for your answer. The table shows the results of a survey of 400 random people on whether they like liquid soap, bar soap, or both. A 4-column table with 3 rows. The first column has no label with entries bar, not bar, total. The second column is labeled liquid with entries 200, 80, 280. The third column is labeled not liquid with entries 100, 20, 120. The fourth column is labeled total with entries 300, 100, 400. Which is the marginal relative frequency for the people who do not like bar soap? StartFraction 100 Over 400 EndFraction StartFraction 120 Over 400 EndFraction StartFraction 280 Over 400 EndFraction StartFraction 300 Over 400 EndFraction Could someone help with this? Locate the point on the line segment between A(3, -5) and B(13, -15) given that the point is 4/5 of the way from A to B. Show your work. Read and match each sentence with the correct word or phrase to complete it.1. Hoy es la boda de su mam con su segundo esposo, Thomas. Thomas es su _________ .2. El pap de tu esposa es tu ________.3. El hermano de mi esposo es mi ________.4. 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Find its area difference between permanent and temporary slide preparation as writers revise document-based essays, they should make sure relevant facts and help i will make u a brainllest 17. Which statement is true? 11. If m Raj is recovering from a knee injury and needs physical therapy. At first, his health insurance would not cover the cost, and he was worried that he could not get therapy. However, the insurance company recently reversed its decision, and Raj will be able to have the therapy. He found a therapist who accepts his insurance. However, her office is more than 10 miles away, and Raj does not own a car. She would like him to visit three times a week for at least six weeks. What barrier must Raj overcome to receive appropriate medical care? a. a financial barrier, as his insurance company will not pay for his therapy b. an environmental barrier, as the recommended therapist is located too far away c. a family barrier, as Rajs father does not support his decision to seek care d. a social barrier, as there are no physical therapists in his town The suffix -stomy means openingformationsurgical repairabnormal An object falls freely from a height of 25 meters onto the root of building 5meters High. Calculate the velocity which the object strikes the root