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Evgen [1.6K]
3 years ago
14

The structure that regulates what enters and leaves the celt is called the

Biology
2 answers:
lakkis [162]3 years ago
4 0

Answer:

the cell membrane

Explanation:

also known as the plasma membrane it regulates what enters and leaves a cell and protects the cell.

Grace [21]3 years ago
4 0
I'm pretty sure it's the cell membrane, hope this is right :)
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A pea plant homozygous for the trait of smooth seeds is crossed with a pea plant that is homozygous for the trait of wrinkled se
Fed [463]

Answer:

100%

Explanation:

A pea plant homozygous for the trait of smooth seeds;

let that be = ss

A pea plant that is homozygous for the trait of wrinkled seeds;

let that be  = ww

if ss crosses with ww; the F1 produces seeds that are all smooth

i.e ss × ww = (sw, sw, sw, sw)

From the  question, we are to find the percentage of the second generation that will produce smooth seeds after self fertilization occurs.

i.e  sw, sw, sw, sw  ×   sw, sw, sw, sw

= the result will yield ssww for all F2 progeny

∴ the percentage of plants that will have smooth seeds when the F1 generation is self-fertiized is 100%

8 0
4 years ago
Below is a model for photosynthesis. What is the missing product of the Calvin cycle?
arsen [322]
There is no model.
But the product of the Calvin cycle is glucose or G3P
3 0
4 years ago
put the processes of the water cycle in the correct order starting at the point where the water is in a lake
kow [346]
Evaporation (from the lake to the air)
condensation (gathering in the air into a cloud)
precipitation (from the cloud back to the earth)
3 0
3 years ago
Read 2 more answers
How many teaspoons of sugar can dissolve in hot water until it will no longer dissolve after stirring
tester [92]

Answer:

it depends on what sugar you are using

Explanation:

8 0
3 years ago
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If plants were able to respond in any possible way, what could plants have done to make plant productivity higher or at least le
Elan Coil [88]

Answer:

Plants must have evolved in a manner where they require less water and nutrients as these two were the only limiting factor and carbon dioxide was in abundance

Explanation:

Some 400,000 years ago, the concentration of CO2 was very high and was near to 1000 ppm. At this high concentration of CO2 the photosynthetic activity of plants becomes very high and thus since 400,000 years ago plants could have evolved in an uncontrolled manner but this does not happened. So the reason behind this is limitation in terms of soil and its constituent’s nutrients availability and also limited supply of water.  

Therefore, if plants would have evolved themselves in a manner where they require less water and nutrients then they would have grown limitless.  

5 0
3 years ago
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