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mojhsa [17]
3 years ago
11

Proteins are assembled by which organelles

Biology
1 answer:
FinnZ [79.3K]3 years ago
7 0
Proteins are made up of a chain of 20 amino acids
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Which organelles must work together to provide food and energy to a plant cell?
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Answer:

Cells are membrane-bound groups of organelles that work together to allow it to function. Some of the major organelles include the nucleus, mitochondria, lysosomes, the endoplasmic reticulum, and the Golgi apparatus. Plant cells also include chloroplasts, which are responsible for photosynthesis.

Explanation:

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Why are there more overweight people than overweight animals?
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Describe the PCR technique; include details about the components required in a PCR reaction and the stages of each cycle. Make s
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Food that improves male fertility?​
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2 years ago
Which of the statements regarding the cell cycle is true? Group of answer choices It is regulated by cyclins and CDKs. Different
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Answer:

All of these choices are correct.

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Cell cycle is the process of growth and division of cell. It comprises of interphase and mitosis. In interphase the cell grows, replicates its genomic content and prepares itself for division. In mitosis the division occurs.

Cell cycle is controlled by a group of kinases called as Cyclin dependent Kinases (CDKs). They act by phosphorylating their substrates. They are of various types like Cdk1, Cdk2, Cdk4 etc. They become active when they bind to a regulatory protein called cyclin. They are also of various types like Cyclin A, Cyclin B, Cyclin C etc. Level of cyclin and corresponding CDK increases and decreases according to the stage of cell cycle. For example in S phase of cell cycle concentration of cyclin A and E shoots up. CDK2 is able to bind to these cyclin molecules and hence it becomes active.

Cell cycle has major checkpoints where the condition of cell is analysed before it proceeds to the next stage of cycle. If any abnormality is detected, repair mechanism is activated or the cell is killed. Checkpoints do not allow cell cycle to proceed in damaged cells.

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3 years ago
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