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Licemer1 [7]
3 years ago
10

___________________, produced by stem cells found in bone marrow , manufacture antibodies used to counter the effects of antigen

s.
A.) T-Cells
B.) B-Cells
C.) Macrophages
D.) A- Cells
Biology
2 answers:
Alexeev081 [22]3 years ago
8 0
ANSER :

B.) b-cells

EXPLIMAITION :

lesya [120]3 years ago
7 0

Answer:

B cells develop into plasma cells that make antibodies to fight infection.

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seeds that are planted upside down are still able to grow into mature plants which explanation best explains this phenomenon?​
pav-90 [236]

Answer:

This question is incomplete but the completed question is below

eeds that are planted upside down are still able to grow into mature plants. Which explanation best explains this phenomenon?

(a)The roots change into branches, and the branches turn into roots.

(b)The roots grow toward the force of gravity, and the shoots grow away.

(c)The plant will become a smaller version of a mature plant.

(d)Roots always grow toward the dark, and shoots grow toward the light.

Two options appear to be correct here: options B and D

Explanation:

Regardless of the direction the seed is planted, the seed has the ability to re-position itself via the help of growth hormones that respond to gravity and redirect the seed into the proper orientation. However, after re-orientation of the seed, the root grows toward the direction of gravity (a process known as gravitropism) while the shoot grows toward the direction of sunlight (a process known as phototropism). Even though two options appear to be correct here, the most correct option based on he question is b

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2 years ago
Ants communicate with chemicals called
hammer [34]
The answer is d. pheromones.
3 0
3 years ago
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Starting from the sun, create a food chain including at least three organisms. Explain how energy is transferred through the cha
Kryger [21]

Answer:

The food chain showing seven organisms can be drawn as follows:

Plants → grasshoppers → mice → frog → snakes→ eagles → decomposers

The plants are the primary source of food in a food chain or a food web. The animals which feed on plants will be termed as herbivores or primary consumers like the grasshopper. The organisms feeding on primary consumers will be the secondary consumers like mice.

An energy pyramid for three of the organisms can be shown as follows:

              mice (10 kilocalories)

                   ↑

        Grasshoppers (100 kilocalories)

                   ↑

       Plants ( 1000 kilocalories)

As the energy pyramid shows, only about 10% of the energy travels from one trophic level to another.

Explanation:

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What does "Biotic" mean?
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Explanation:

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How does the gasses in earths air differ from place to place
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As molten rocks cool gases such as nitrogen water vapor and carbon dioxide are released
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3 years ago
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