1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
UNO [17]
3 years ago
10

Help ASAP, please Thank you, Friends:)

Biology
1 answer:
Likurg_2 [28]3 years ago
3 0
Irieirirkekeksksekekekekdjdjdjdkdkskdkdjdj
You might be interested in
An anthropologist discovers the fossilized heart of an extinct animal. The evidence indicates that the organism's heart was larg
Paladinen [302]

A reasonable conclusion supported by these observations is that the animal was endothermic and had a high metabolic rate.

<u>Explanation:</u>

With reference to warm-blooded species is preferred the endothermic are the species that preserve a steady body temperature regardless of the ambient temperature. Endothermic species mainly include animal kingdom birds and mammals. Many shrimp, however are endothermic too.

If a variation occurs, i.e. if the heat produced is less than the heat loss, the metabolic rate increases to compensate for that loss. Shivering is another method used by people and many other warm-blooded organisms to boost their body temperature. But in case the heat loss is smaller than the heat produced, the process of panting or suddening occurs to increase the heat loss.

6 0
3 years ago
BIOLOGY GENETICS HELP
Elena-2011 [213]

Answer:

Incomplete dominance can be described as a phenomenon in which the dominant trait is not completely dominant over the recessive trait. Incomplete dominance can be determined when the dominant and the recessive trait merge to form a third type of trait. A new phenotype arises due to such a cross.

For example, when a black-feathered chicken is crossed with a white chicken and their alleles shown incomplete dominance, then offsprings having blue feathers can be seen.

7 0
3 years ago
What do scientists think might cause the universe to stop expanding and collapse in the Big Crunch? dark energy dark matter cosm
hammer [34]
Newtonian gravity is what scientists believe will stop the universe’s expansion. This attraction would have to overcome the propulsive force of dark energy expansion, thus causing the compression of all the matter in the universe back into a small, hyperdense singularity.
3 0
3 years ago
Read 2 more answers
What is the basic difference in effector function between helper and cytotoxic T cells?
3241004551 [841]

Answer:

Helper T cells stimulate B-cells to produce antibodies and killer T cells to destroy the non-self cells. Cytotoxic T cells on the other hand are direct attack cells. They can kill the micro organisms by creating pores on the invader's cell.

Explanation:

T lymphocyte mediated immunity of cell mediated immunity do not secrete antibodies but they help stimulate the B cells to produce them. Immature T cells are produced in bone marrow from where they migrate to thymus via blood. In the thymus maturation of T cells occur and then they migrate to lymphoid tissue and get differentiated into three types:

a. Helper T cells: As the name suggests, they help in activating other immune cells, in other terms they are the regulator of virtually all functions of immune system. Protein mediator called lymphokines are produced by these helper T cells in order to regulate the immune functions. Some examples of these lymphokines are: Interleukin-2 interleukin-3, interferon gamma. T helper cells stimulate the B-cells to produce antibodies.

b. Cytotoxic cells or killer T cells: The lymphokine interleukin-2 is responsible for the growth and proliferation of both cytotoxic T cells and suppressor T cells. With the help of receptor proteins on the surface of killer T cells, they bind to the specific antigen. After binding, they secrete a pore forming protein called perforins which create pores on the invaders cell membrane for water to enter into it thereby cell swells and finally lyse.

c. Suppressor T cells: They suppress the function of above two T cells.

5 0
3 years ago
4. The
loris [4]

Answer:

Exosphere

Explanation:

8 0
3 years ago
Other questions:
  • When you watch a sunset, is the Sun really moving across the sky? What's happening?
    6·2 answers
  • Why was Mendel's work not accepted at the time?
    10·2 answers
  • According to the phylogeny tree which phylum of organisms are most closely related to chordates?
    14·2 answers
  • Is it normal or abnormal to have respiratory depression after a bronchoscopy hurst review?
    6·1 answer
  • Which correctly compares the immunity produced by a vaccine with the immunity produced by injection of antibodies from an extern
    15·2 answers
  • An anode is an electrode immersed in the half-cell where _____ takes place.
    5·1 answer
  • What type of particles pass through diffusion
    7·1 answer
  • The diagram below shows some subatomic particles.
    11·1 answer
  • Describe the transformation of matter through photosynthesis?​
    7·2 answers
  • igh levels of cortisol would normally provide negative feedback to the _______. High levels of cortisol would normally provide n
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!