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den301095 [7]
3 years ago
5

Which statement about natural selection is true?

Biology
2 answers:
NISA [10]3 years ago
5 0

Answer:

Explanation:

Environmental changes determine which animals survive

I hope it helps ...Nah?

kenny6666 [7]3 years ago
3 0

Answer:

B. Environmental changes drive differential reproduction

Explanation:

Can I have a thanks, 5 star and brainliest? Also tell me if i am right!!!

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How are species richness and productivity related?
nekit [7.7K]

Answer:

Recent studies have examined the possibility that variation in species richness within communities may influence productivity leading to an exploration of the relative effect of alterations in species number per se as contrasted to the addition of productive species.

Explanation:

hope this helps

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6 0
2 years ago
This type of membrane transport moves substances against the concentration gradient from an area of low concentration to an area
sashaice [31]

<u>Answer</u>:- Active transport

<u>Explanation</u>:-

There are two types of membrane transports

1. Passive transport - this type of transport occurs without the input of any energy and the molecules move along the concentration gradients that is from <em>high concetration to low concentration.</em>

2. Active transport- this type of transport takes place to move the molecules against the concentration gradient that is from <em>low concentration to high concentration.</em>

<em>The active transport is of two types:</em>

1. <em>Primary active transport-</em> in this type of transport <em>ATP</em> is used as an energy source to move the substances against the concentration gradient.

2.<em>Secondary active transport</em> - in this type of transport the gradient formed by the active transport is utilized and it involves the movement of 2 substances at a time aross the membrane. That is the movement of one molecule is coupled to another.


  • The membrane proteins that are associated with active transport are called as <em>carrier proteins</em>. These proteins have a binding site for the molecules that they transport. Once they bind to the specific molecules, a conformation change is induced and this leads to the transport of the molecule across the membrane.

So, the <em>active transport is basically responsible for utilizing the energy from ATP and carrier proteins to move the substances across the membrane against their concentration gradient i.e. from low concentration to high concentration.</em>

5 0
2 years ago
Which of the following is similar among all living organisms on Earth?
Simora [160]

Answer:

cellular function.

Explanation:

I can't really explain. That easily. I don't remember much of this subject.

4 0
3 years ago
What is the final major checkpoint before cell division can be completed?
denis-greek [22]
The answer is the G1 checkpoint
8 0
3 years ago
100 POINTS PLEASE HELP!
Goryan [66]

Answer:

True

Explanation:

All organic (naturally occurring) molecules are classified into 4 general categories: carbohydrate, lipid, protein, and nucleic acid. Foods you consume consist of these 4 molecules.

6 0
2 years ago
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