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stira [4]
3 years ago
5

What class of enzymes are involved in triggering events in the cell cycle?

Biology
2 answers:
vichka [17]3 years ago
6 0
<span>The Cell Cycle & Mitosis Tutorial</span>
ASHA 777 [7]3 years ago
4 0
Kinases. Kinases add phosphate to molecules, and the modification can serve as a "switch" to turn events in the cell on or off. CDKs or cyclin dependent kinases regulate the cell cycle.
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Is the following statement true or false? Explain your
Marrrta [24]

Answer:

False.

Explanation:

Cell membrane is made of the lipids and proteins with the attached moieties of carbohydrates. The plasma membrane is the selectively permeable membrane that allows the diffusion of some selected particles only.

The transport along the cell membrane depends on the size and the hydrophobicity of the molecule. The size of oxygen is although higher than magnesium but to its highly hydrophobic nature it can easily pass through the plasma membrane as compared with the magnesium. The oxygen diffuses out faster than magnesium.

Thus, the answer is false.

8 0
3 years ago
Which TWO descriptions of plants explain how they contributed to the carbon cycle?
denpristay [2]

Plants stored carbon in their tissues to use as energy and plants took in carbon dioxide and released oxygen through photosynthesis. Thus, the correct option is A and D.

<h3>What is carbon cycle?</h3>

The carbon cycle is the ongoing process through which carbon atoms move back and forth between the atmosphere and the Earth. The amount of carbon in this system does not fluctuate because our planet and its atmosphere are a closed environment. The location of the carbon, whether it is on Earth or in the atmosphere, is continually changing.

Plants use photosynthesis to transport carbon from the atmosphere into the biosphere and move it up the food chain. They make sugar molecules by chemically combining carbon dioxide with oxygen and hydrogen from water using solar energy.

For more information regarding carbon cycle, visit:

brainly.com/question/12023466

#SPJ1

4 0
1 year ago
True or False Questions: 1. When a cell is put into an isotonic solution, individual water molecules cannot move back and forth
lord [1]
1.) It is True that when a cell is put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane. 
2) It is False that a when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell. 
3) It is True that when a cell is out into a hypotonic solution, there is net movement.
4) It is False that the movement of any solvent across a semi-permeable membrane is called osmosis.

5 0
3 years ago
What is a carbon foorprint
Alex Ar [27]

Answer:

Definition: The amount of carbon dioxide and other carbon compounds emitted due to the consumption of fossil fuels by a particular person, group, etc.

6 0
3 years ago
Where do hydrogen ions come from
Sedaia [141]

Answer:

Fossil fuels specifically natural gas

Explanation:

3 0
3 years ago
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