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Flauer [41]
3 years ago
15

B-lymphocytes are categorized as part of the adaptive branch of the immune system for all of the following reason but one. Which

of the following is not one of the reasons B-lymphocytes are considered part of the adaptive immunity?A) Their receptors will bind to only one antigen.B) They are a first line of defense that can begin killing pathogens immediately.C) They require costimulation from an activated T-helper cell.D) They produce memory cells when activated.
Biology
1 answer:
elixir [45]3 years ago
4 0

Answer: B. They are a first line of defense that can begin killing pathogens immediately.

Explanation:

B-lymphocytes are not the first line of defense. On the contrary, innate immune cells such as basophils, dendritic cells, eosinophils, Langerhans cells, mast cells are the body's first line of defence.

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This can happen because you have recessive and dominant characteristics passed down. So you can get a totally different chromosome that doesn't come from your parents because your grandparents may have had it or great grand parents, the line keeps going .
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What are some outcomes of nuclear fusion?
Svetlanka [38]

Answer:

A. produce larger materials from the collision of smaller materials

Explanation:

The outcome of nuclear fusion reaction is that it produces larger materials from the collision of smaller materials.

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  • The energy released provides the needed temperature for another set  of atoms to fuse.
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3 years ago
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A student added a solution to the plant cell shown in image 1 which resulted in the plant cell undergoing changes, as shown in i
Ymorist [56]

Answer:

Plasmolysis

Explanation:

In the image 1 the cell is having sufficient quantity of water leading to a turgid cell.

The image 1 plant cell is in a dilute solution in which water enters into cell from external medium.

The image 2 plant cell is exposed to a solution which is high concentrated solution.

Due to this high concentrated  solution the water present in  the cell is send out by exosmosis.

Due to loss of water from plant cells the protoplasm in plant cell shrinks in which cell membrane gets separated from  cell wall.

This shrinkage of protoplasm by loss of water is called plasmolysis.

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HELP ASAP
Gnom [1K]

Answer:

less than 1%

Explanation:

The approximate percentage of the geologic time that humans have existed on the Earth since its origin is less than 1%.

The earth is about 4.6 billion years and much of its history has been without the present of human activities.

  • Hominis were the first human to appear on the surface of the earth.
  • This was in the Miocene epoch which was about 6 million years ago.
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A nurse is assigned to conduct an admission assessment on the phone for a pregnant client. which information should the nurse ob
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