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Bingel [31]
2 years ago
7

The characteristic of a cell membrance that allows materials to pass through it is called ___

Biology
1 answer:
sergey [27]2 years ago
5 0

Answer:

B

Explanation:

Permeability is the property of a cell membrane that allows materials to pass through.

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Which is an example of positive gravitropism?
AveGali [126]

Answer:

c. the plant root growing down into the soil

Explanation:

The plant root going down deep into the soil is an example of positive gravitropism. Gravity pulls everything towards the center of earth i.e. downwards and roots follow the direction of gravity automatically by growing downward towards soil that is why it is known as positive gravitropism. In short we can say that root favors the direction of gravity.

Shoot on the other hand show negative geotropism/gravitropism i.e. it grows towards the opposite direction of gravity. Shoot grow towards upside direction i.e. away from the surface towards sky.

4 0
3 years ago
What occurs in prophase I?
kap26 [50]

Answer: Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears. ... At the start of prophase I, the chromosomes have already duplicated. During prophase I, they coil and become shorter and thicker and visible under the light microscope.

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3 years ago
How are disaccharides formed?
Gnom [1K]
Person above me seems smart
3 0
2 years ago
4. ***Which of the following particles represents an ion?
Alex787 [66]

Hey there!

An ion is any atom with an electric charge. This can be negative or positive.

To see which one of these is an ion, first see what causes an electric charge. Positive charges are caused by protons. One proton = one positive. Negative charges are caused by electrons. One electron = one negative. Thus, when the number of protons and electrons are equal, this makes it so there is no overall charge. Thus, to make an ion, the number of protons and electrons must be unequal.

When we look at the answer choice, we can see that the number of protons and electrons are equal for every single choice except for choice b. Thus, your answer is b.

Hope this helps!

8 0
3 years ago
The Differences Between Monosaccharides &amp;<br> Polysaccharides
saveliy_v [14]

Answer:

simple. the root word mono means one

the root word poly means many.

4 0
3 years ago
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