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Furkat [3]
3 years ago
11

Proteins also act as ____ in cells to control reactions

Biology
1 answer:
Leno4ka [110]3 years ago
5 0
Enzymes, made primarily of proteins, help regulate the rate of chemical reactions in the body. They are like huge molecules with very complex structures ordered together to form an organized structure that allows the reactants to lock together in a certain way, often referred to as lock and key in textbooks.
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Help i need help with this question
ki77a [65]

Answer:

B, E are true

Explanation:

The process of respiration produces energy for organisms by combining glucose with oxygen from the air. During cellular respiration, glucose and oxygen are changed into energy and carbon dioxide. Therefore, carbon dioxide is released into the atmosphere during the process of cellular respiration.

A is false because respiration also happens in plants and is best at night (light not present)

B is true because during the reaction co2 is produced as waste

C is false because co2 is a waste product not a reactant

D is fals because o2 is a reactant not a product

E is true because the whole point of respiration to to produce energy (ATP)

F is false because this occurs in plants aswell

5 0
3 years ago
If you crossed two heterozygous yellow-seed pea plants (genotypes aa), the relative frequency of:
Blababa [14]
The child could be night blind or have normal vision.<span> </span>
5 0
3 years ago
!!!!50 POINTS PLEASE HELP!!!! Evolution is a change in population over time and includes gene pools of that population. How does
loris [4]

Answer:

Biogeographic isolation affects the changes in gene pools that result from which organisms are breeding -is how biogeographic isolation allows for the change of gene pools over ( time )

Explanation:

4 0
3 years ago
1.2.4 Quiz: Principles of Heredity
sergeinik [125]

Answer:

A form of a gene

Explanation:

7 0
3 years ago
Which of the statements regarding the cell cycle is true? Group of answer choices It is regulated by cyclins and CDKs. Different
MA_775_DIABLO [31]

Answer:

All of these choices are correct.

Explanation:

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.

p53 is a tumor suppressor protein which can halt cell cycle when it detects some abnormality in cell. It usually acts in G1/S checkpoint (before the DNA replication starts in cell) and G2/M checkpoint (before the cell division begins). Hence, all of the above statements are true.

7 0
3 years ago
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