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AfilCa [17]
2 years ago
5

which macromolecule carries out many of the functions in the cell, including catalyzing chemical reactions, transporting molecul

es, and providing structure to the cell?
Biology
1 answer:
Bess [88]2 years ago
8 0
The cytoplasm I think
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Define the components of blood and briefly describe their role.
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Tha main components in blood are the plasma, red blood cells, white blood cells, and blood platelets.

Plasma is like the main component that makes up most of the blood. It has a light yellow color and it carries many substances including nutrients, waste, hormones and more.

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8 0
3 years ago
A ribozyme is a catalytic protein that assists in the processing of the tRNA, true or false
Basile [38]
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6 0
3 years ago
Acetylcholine binds to a GPCR on heart muscle, making the heart beat more slowly. The activated receptor stimulates a G protein,
kogti [31]

Answer:

The correct answer is option (b) "addition of a drug that prevents the α subunit from exchanging GDP for GTP".

Explanation:

The G protein is a name given to a family of proteins that act as a switch in diverse cellular processes, transmitting signals from outside to inside of the cells. When a G protein receptor is activated by a neurotransmitter such as dopamine, the alpha subunit exchanges its GDP for a GTP and disassociates G-protein itself. An addition of a drug that prevents this action would prevent  G protein disassociation, which would enhance the effect of stimulating G protein that acetylcholine does.

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