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Ad libitum [116K]
3 years ago
5

Enzymes and substrate fit together at the active site to form a lock and key mechansim. This means

Biology
1 answer:
MrRissso [65]3 years ago
5 0

Answer:

the answer is option b hope you understand

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30 points who answers . Seasons are caused primarily by Earth's.
guajiro [1.7K]

Answer:

A, clockwise rotation.

Explanation:

6 0
3 years ago
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_____ evolved during the jurassic or cretaceous periods
BARSIC [14]
It could be dinosaurs, or a specific species... could you be more specific with what it's related to?
6 0
3 years ago
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Turgor pressure is the pressure exerted on a plant cell wall by water. When wilted plants are placed in water, they demonstrate
Rus_ich [418]

Answer: When wilted plants are given water, it enters the cell generating turgor and giving a firmer appearance, and this water is stored in the vacuoles.

Explanation:

Turgor is a phenomenon in plant cells in which the cell expands due to the pressure exerted by the fluids and also by the cell content on the walls. It is related to osmosis, since the external pressure is usually very high and this internal pressure dilates the cell as much as the elasticity of the membranes allows. <u>Then, the cells swell by absorbing water, tensing the membranes because of the pressure against them.</u> When the fluid exerts outward pressure on the cell wall it is called turgor pressure.  Whereas, the inward pressure exerted on the cell contents by the stretched cell wall is called wall pressure. Generally, both pressures, turgor pressure and wall pressure, are counterbalanced and balanced.

So, this pressure of turgor facilitates the elongation of the cells in the plant, and also, the cells use this phenomenon to regulate the transpiration through the opening and closing of the stomach.

Thereby, the turgor of a living cell is influenced by three primary factors:

  • An adequate supply of water.
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  • A semi-permeable membrane.

Vacuoles are organelles bounded by a single membrane and present in plant and fungal cells, and where water is stored. Plant cells control their turgor pressure through the movement of water into or out of vacuoles. When wilted plants are given water, it enters the cell generating turgor and giving a firmer appearance, and this water is stored in the vacuoles.

3 0
3 years ago
Which of the following types of mutation would convert a proto-oncogene into an oncogene?
Diano4ka-milaya [45]
I think the correct answer from the choices listed above is option A. The <span>type of mutation that would convert a proto-oncogene into an oncogene would be </span><span>a deletion of most of the proto-oncogene coding sequence. Hope this answers the question. Have a nice day.</span>
3 0
3 years ago
Which statement best explains why water is the most important substance for sustaining life on Earth?
mojhsa [17]

Answer:

I would say "Water moderates Earth's climate by absorbing large amounts of heat."

Wait till someone else answers though, i am not entirely sure.

7 0
3 years ago
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