The first cells activated by the antigens are called ?

Biology

1 answer:

juin [17]2 years ago

8 0

Answer:

Effector B- cells.

Explanation:

These are also known as plasma B cells- and are pretty much the cells that secrete antibodies against the antigen in question. They also, through a cascade of events, produce activated T-cells (T-helper and T-cytotoxic cells). The latter cells organize cell-mediated immune response against the antigen.

You might be interested in

If I Throw a bowling ball and a tennis ball from a building, describe if one would hit the ground first and why.

Natasha_Volkova [10]

Bowling ball,as there is more mass and the force of gravity

3 0

2 years ago

Read 2 more answers

You are sorting cards with pictures of organisms and their descriptions into groups. You would place the card with an osprey and

NikAS [45]

Answer:

The osprey card and its description should be placed in the heterotrophs group.

Explanation:

Organisms that can synthesize inorganic substances, such as light, and turn it into food according to their own needs are producers, and they are called autotrophic organisms. These organisms are by excellence all plants, that photosynthesize. Organisms that are incapable of producing their food are called heterotrophic organisms. They depend on other organisms from the trophic chain such as plants or other animals to feed on, so they can get proteins and energy.

In the trophic chain, heterotrophic organisms occupy the first, second or third consumer level, after producers.

There are different types of heterotrophic animals: carnivorous, herbivorous, omnivorous, hematophagous, ichthyophagous, and etcetera. All of them depend on autotrophic organisms.

4 0

2 years ago

How do enzymes affect reaction rate in cells

lapo4ka [179]

Answer:

Enzymes greatly affect reaction rate in the cells because it speed up the chemical process.

Explanation:

Enzymes are the substances which act as a catalyst during a chemical reaction. Enzyme speed up the chemical process by attaching with the molecules in the reaction and when the process completed it is detached from the molecules. No decrease occurs in the size of enzyme after the reaction is completed.

7 0

2 years ago

What is the strong fibrous tissue outer periphery of the intervertebral disk called?

kvv77 [185]

The answer is anulus fibrosus.


The intervertebral disk is located between vertebrae. It is has two parts, the middle part which is called nucleus polposus and the outer part, the Anulus Fibrosus. This outer part, is a strong fibrous tissue in the form of a ring, that can withstand compressive forces.

4 0

3 years ago

_____ stimulate stem elongation, seed germination, and flowering.

kati45 [8]

I think the correct answer from the choices listed above is the last option. Gibberellins are chemicals produced which stimulate stem elongation, seed germination, and flowering. Hope this answers the question. Have a nice day. Feel free to ask more questions.

4 0

2 years ago