Role of T helper cells in the specific immune response

2 answers:

4 0

The role of T helper cells is to released T cell cytokines and these cells help suppress or regulate the immune responses.

Paraphin [41]3 years ago

3 0

Answer:

T cells identify pathogens based on antigens on the surface of pathogens. The T cells then multiply and stimulate B cells to produce antibodies. The antibodies attach to the antigens, making the pathogens a target for phagocytes.

Explanation:

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Frozen water (ice) has less density than liquid water. How does this property of water affect life on Earth?

pav-90 [236]

This property of water affects life on Earth because it<span> floats on the surface, sustaining life at the bottom of lakes and oceans</span>

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3 years ago

List 3 factors that can speed up the rate of chemical reactions

zysi [14]

Answer:

Temperature
Greater Surface Area
Catalysts

Explanation:

Temperature

An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. 17.5 “Temperature and Reaction Rate”).

Greater Surface Area

The rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. ... more particles are exposed to the other reactant. there are more collisions. the rate of reaction increases.

Catalysts

A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism.

Hope this help!!!

7 0

3 years ago

Read 2 more answers

Which type of food is not digested before being absorbed by the body?

Crazy boy [7]

The only consumables that is not digested and is immediately absorbed, would be water, it is nothing but a polar compound that does not yield as much energy as all of the other molecules.

4 0

3 years ago

Amino acids are the subunits of larger molecules called

lawyer [7]

Answer:

proteins

Explanation:

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3 years ago

A soccer coach names the roster for the varsity soccer team. The team has 5 freshman and 4 seniors.

NeTakaya

The ratio would be 5:4