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Vera_Pavlovna [14]
3 years ago
7

How does the cell membrane affect the contents of a cell

Biology
2 answers:
andriy [413]3 years ago
7 0

Answer:

The cell membrane determines what goes in and out of the cell.

Explanation:

Eva8 [605]3 years ago
3 0
It allows things to go in and out of the cell. Plants have rigid cell walls which makes it harder for things to go in and out if the cell. Animal cells are softer so they can diffuse substances easier
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Cuales son los nucleotidos que forman parte del adn
Mnenie [13.5K]

Answer:

Un nucleótido esta formado por una molécula de azúcar (ribosa en el ARN o desoxirribosa en el ADN) unido a un grupo de fosfato y a una base nitrogenada.

Explanation:

ADN,    ARN son polímeros formados por largas cadenas de nucleótidos.

Las bases utilizadas en el ADN son: adenina, citosina, guanina y timina

En ARN, la base  uracilo y ocupa el lugar de la timina.

3 0
3 years ago
Why is it important to center the object you want to look at in your field of view before changing to a higher magnification obj
Lesechka [4]

Answer:

B. So you can always see the entire object at the higher magnification

Explanation:

A microscope is used to view objects smaller than the naked or unaided eyes can see. The objective lens, in conjunction with the occular or eye lens, is used to achieve this purpose. The objective lens are of different magnifications as follows: 10X, 40X, 100X etc.

However, as the magnification increases i.e. higher objective, the object in the field of view becomes smaller and less focused. Hence, the object in the field of view must first be centered at a lower magnification/objective lens before changing to a higher one in order for the entire object to be seen at a higher magnification.

5 0
3 years ago
Muscle contraction is an example of which of the following types of work? Group of answer choices electrical concentration heat
Citrus2011 [14]

Answer:

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Explanation:

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Muscle contraction is based on force and length.

The process of skeletal muscle contraction is an energy requiring process.

In order to perform mechanical work,actin and myosin  utilizes the chemical energy into ATP that ultimately require during muscle contraction and relaxation.

In a working muscle,glucose is released  from glycogen that are stored in the muscle by the process of glycolysis in which glucose broken down into ATP that is required by cells and tissues.

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Explanation:

is this what you mean? if not im so so so sorry and i can try again

8 0
2 years ago
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My name is Ann [436]

Answer:

The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.

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