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Zina [86]
3 years ago
9

Name the two types of proteins that regulate the cell cycle how do these proteins work

Biology
1 answer:
Mariana [72]3 years ago
7 0
Internal and external cell regulators, external speed up and down the cell, internal allows the processes of the cell to begin
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all plants give out oxygen during day and carbon dioxide during night. Do you agree with this statement. Give reason
Citrus2011 [14]

This statement is incomplete.

"All plants give out oxygen during day and carbon dioxide during night"

Explanation :

Photosynthesis occurs only during day time.

During this time oxygen is produced . Some oxygen is used for respiration and rest of oxygen is diffused out into air.

Carbon dioxide produced during day time by respiration is used in photosynthesis.

But at night time, no photosynthesis occurs  and hence no oxygen is produced oxygen from air diffuses into leaves to carry out respiration and carbon dioxide produced by respiration diffuses out into air.

Hence Respiration occurs day and night .. Hence Carbon dioxide  is emitted  all the time....

Plz Mark Brainliest trying to reach expert

8 0
3 years ago
Which are limiting nutrients for plant growth?
Strike441 [17]

Answer:

Nitrogen and phosphorus are among the elements considered most limiting to plant growth and productivity because they are often present in small quantities locally or are present in a form that cannot be used by the plant.

Explanation:

6 0
3 years ago
Write a sentence using the word 'resistance'
Kisachek [45]
In 1953, he developed a method to make strains of wheat highly resistant to a single form of rust.<span>
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3 0
4 years ago
Arrange the terms in the correct order:<br><br>tissue, organism, organ, cell, system<br>olgan​
Feliz [49]
Cells,tissue, organ , organ system
4 0
3 years ago
Abnormal vascular regulation by endothelial cells in small vessels of the heart contributes to:___________. a. Hypertension b. D
RUDIKE [14]

Answer: The correct answer to the question is option D

ISCHEMIC HEART DISEASE.

Explanation: To answer the question effectively, let us look at the options given,what they are and how they affect the heart.

Endothelial cells play a crucial role in the regulating vascular tone,They do so by secreting variable amounts of constricting and relaxing factors inorder to control tissue perfusion.

Hypertension on the other hand occurs as a result of factors that varies distinctively and not all related to vascular tone.

Dysrhythmias on it's own will affect the function and conduction of heart chambers but not necessarily vascular tones.

Truncus arteriosus results in only in one large artery exiting/leaving the heart.

3 0
3 years ago
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