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natali 33 [55]
3 years ago
14

What is active transport?​

Biology
1 answer:
kompoz [17]3 years ago
3 0

Answer:

the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

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Kevin is studying predator-prey interactions. One day he notices a spider eating a cricket caught in its web. Later that day, a
s344n2d4d5 [400]

Answer:

The correct answer is option - A. 0.

Explanation:

Producers are the organism that produces on their own. They do not depend on other organisms for their nutrition and energy such as green plants. They transfer energy and nutrition.

In the given scenario there is no producer present all are consumers of different levels. Cricket is a primary consumer, a spider is a secondary consumer and bird is the third consumer in this food chain.

Thus, the correct answer is option- A. 0.

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3 years ago
What does it mean that a gene exhibits codominance?
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Essentially traits of both genes will be shown. Take heterochromia for example, where a person has a green eye and a blue eye, both have some part in developing a trait.
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3 years ago
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Why are there so many satellites orbiting earth at this time?​
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Answer:

2,787

Explanation:

Currently there are over 2,787 active artificial satellites orbiting the Earth.

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If Cas9 edits DNA, why is a molecule of RNA needed in a CRISPR complex?
pantera1 [17]

Explanation:

The use of CRISPR/Cas9 avoids the need for protein engineering to develop a site-specific nuclease against a specific DNA target sequence, requiring only the synthesis of a new piece of RNA. This dramatically simplifies and greatly reduces the time needed for gene editing design and implementation.

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How does natural selection or human evolution affect disease susceptbility
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