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Fantom [35]
2 years ago
11

What word describes a membrane that only allows certain things through it?

Biology
1 answer:
stellarik [79]2 years ago
4 0

Answer:

C) semipermeable

Explanation:

because permeable means it allows things through, and then semi makes it to where it only allows certain things through

and Impermeable means it won't let things through  and the other two options just don't make sense for the question

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RNA A long, collection of genes that carries heredity information and is formed from condensed chromatin.
Kay [80]

The answer is Chromosome


A chromosome is a Deoxyribonucleic acid molecule with part or all of the genetic material of an organism.


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4 0
3 years ago
Read 2 more answers
Explain how in an electrical system like wires going from a plant to a house, there is less electrical energy at the end of the
DiKsa [7]

Answer:

According to the law of conservation of energy, energy cannot be created or destroyed, although it can be changed from one form to another. KE + PE = constant. A simple example involves a stationary car at the top of a hill.

The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside.  The only way to use energy is to transform energy from one form to another.

Similarly, the law of conservation of energy states that the amount of energy is neither created nor destroyed. ... For example, when you roll a toy car down a ramp and it hits a wall, the energy is transferred from kinetic energy to potential energy.

Explanation:

7 0
2 years ago
Which of the following situations does diffusion not help, in our bodies?A. Oxygen entering the bloodstream.B. Food entering the
lubasha [3.4K]

Answer:

Glucose entering the intestines from the villus.This is by active transport.The latter is defined as the movement of molecules and  solutes from the region of lower concentration to the region of higher concentration against the concentration gradient.

Explanation:

All the above options depends on the diffusion gradients from one  higher region to another.e.g oxygen passing from high concentration from outside to lower concentration in blood stream,like wise Co2 from higher concentration from inside to outside,with passive diffusion lipids and water enter the small intestine(note amino acid and glucose,and fructose are different).

Active transport( through sodium dependent transporter) transports glucose to the intestine  from the villus.This is movements against concentration gradient because,glucose molecule are concentrated in intestine,and needed by the cells, in the body.Therefore they must be transported as a fast rate inn the blood .

However the absorption by the villi is very slow,therefore active transport is needed to move these against the concentration gradient into the intestine.And finally the blood.

If this were to be moved by  passive diffusion,the high concentration in the intestine will force this back into the villi

Therefore extra energy is needed by active transport for the glucose molecules to enter the intestine from the villus.

6 0
3 years ago
What is the black mamba's scientific name?
wolverine [178]
The answer is Dendroaspis Polyepis (according to Google)
5 0
3 years ago
Write 2 sentence of what will happen to a plant without water
vladimir1956 [14]

they would die.... the two main things a plant need is water for the turgor to keep the upright and make sure it doesnt wilt and of course for photosynthesis

5 0
2 years ago
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