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Andreyy89
4 years ago
9

What is dopamine? What role does it play in the brain

Biology
1 answer:
ozzi4 years ago
8 0
Dopamine is a neurotransmitter and it is responsible for transmitting signals between the nervous cells of the brain.
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In addition to gas exchange, what is the overall goal of respiration?
tresset_1 [31]

Answer:

The primary function of the respiratory system is to deliver oxygen to the cells of the body's tissues and remove carbon dioxide, a cell waste product. The main structures of the human respiratory system are the nasal cavity, the trachea, and lungs.

Explanation:

Hope this helps:)

5 0
3 years ago
PLEASE HELP!!!!! WILL GIVE BRAINLIEST!!!!
Cerrena [4.2K]
No because the offspring has a 50/50 chance of having black fur x
7 0
3 years ago
antigen processing involves the breakdown of protein antigens and the subsequent association of peptide fragments on the surface
vredina [299]

antigen processing involves the breakdown of protein antigens and the subsequent association of peptide fragments on the surface of antigen-presenting cells with MHC class I or class II proteins.

Antigen is any foreign particle or molecule that can trigger a n immune response in the body.

After the body encounters the antigen cells like macrophages, B cells and dendritic cells will recognise and destroy them. The parts of the antigen will be presented by the macrophages to the T cells and hence they are also called Antigen presenting cells.

Antigen presenting cells will showcase the antigen or its part to the T cells. This is done with the help of a protein called major histocompatiblity complex or MHC complex proteins.

MHC proteins are present on cell surface and holds the antigens to showcase them to T cells.

To learn more about antigen here

brainly.com/question/15694610

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8 0
2 years ago
What does tissue mean?
Alenkasestr [34]
Cells of same type group together to form tissue.
5 0
3 years ago
A cell has chloroplasts, numerous ribosomes, an endoplasmic reticulum, and a cell wall. What type of cell is this?
NeTakaya

Answer:

The cell with chloroplasts, abundant ribosomes, plus an endoplasmic reticulum, and a cell wall is of the plant cell type.

Explanation:

Plant cells are eukaryotic cells found in all plants, with specific characteristics given their ability to be autotrophic and use solar energy to synthesize their nutrients. The presence of many ribosomes and a developed endoplasmic reticulum is due to their high capacity for plant protein synthesis.

One characteristic that differentiates plant and animal cells is the presence of a cell wall, which surrounds the cell membrane, and chloroplasts. Chloroplasts are responsible for making the process of photosynthesis possible.

8 0
3 years ago
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