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Sav [38]
3 years ago
5

Explain how the cell cycle is regulated.

Biology
2 answers:
Semenov [28]3 years ago
8 0

Answer:

<em><u>Two groups of proteins, called cyclins and cyclin-dependent kinases (Cdks), are responsible for the progress of the cell through the various checkpoints. ... Cyclins regulate the cell cycle only when they are tightly bound to Cdks.</u></em><em><u>The cell cycle is controlled by a number of protein-controlled feedback processes. Two types of proteins involved in the control of the cell cycle are kinases and cyclins. Cyclins activate kinases by binding to them, specifically they activate cyclin-dependent kinases (CDK).</u></em>

Explanation:

<em>hey</em><em> </em><em>mate</em><em> </em><em>i</em><em> </em><em>hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>!</em>

Kitty [74]3 years ago
7 0

Answer:

Cyclins

Explanation:

Cyclins regulate the cell cycle only when they are tightly bound to Cdks.

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Match each major blood vessel with the correct description
zalisa [80]

The aorta carries oxygen rich blood away from the heart.

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4 0
3 years ago
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When does cell differentiation occur? Question 1 options: when cells express the same gene when cells express different genes wh
serg [7]

Answer:

The answer is when the cell express different genes.

Explanation:

Cell differentiation is the process when a cell is changed from one cell type to an other and brings more complexity to the system. A cell before differentiation possess all the genes however their expression in turned off. When some external or internal factors trigger the gene expression it starts the cell differentiation. A multicellular organism undergoes several rounds of cell differentiation during its development. Although cell differentiation changes the size, shape and metabolic activity but the genetic makeup or DNA is never changed during cell differentiation.

5 0
3 years ago
Carl Ritter was NOT a proponent of the theory of environmental determinism. True False
vesna_86 [32]
HEY THERE!!

Correct answer is true .
Carl ritter was actually not a proponent of the theory of environmental determinism.

HOPE IT HELPS YOU.
3 0
3 years ago
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Which joint shows the motions called elevation and depression?
allsm [11]
It is the ankle joint
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Rank the following ecosystems in order of their net primary productivity, from lowest to highest:________. a) open ocean. b) tro
katrin [286]

desert, open ocean, lake, tropical rain forest

Explanation:

The net primary productivity tells us about how productive an ecosystem is. It is usually derived by the difference between the amount of carbon dioxide that producers used to the amount they release during their cellular respiration.

  • The rainforest is the biome with the highest amount of net productivity.
  • The amount of sunlight and organic matter used up during photosynthesis is very large.
  • The tropical rain forest receives the highest amount of sunlight because the sun is overhead here.
  • This provides energy to drive photosynthetic process in the presence of other available resources.
  • Deserts are bare and lacks plants due to the extreme conditions here not favorable to life.
  • The open ocean productivity is restricted to the photic zone where light is only able to reach
  • Lakes are highly productive ecosystems.

learn more:

Producers brainly.com/question/9684714

#learnwithBrainly

4 0
3 years ago
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