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Alex
3 years ago
10

Which statement id true about a cell wall but not a cell membrane

Biology
1 answer:
Andru [333]3 years ago
3 0

It forms the outer layer of a cell. It gives an animal cell its shape. It is selectively permeable.

:3333333333

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When the neuron becomes depolarized, it means
Zigmanuir [339]

Answer:

The inside is becoming positive.

Explanation:

The membrane potential may be defined as the difference in the electric potential between the outside and inside of the cell. This potential difference is important for the conduction of nerve impulse.

The depolarization of the cell occur due to the movement of sodium ions inside the cell. The depolarization of the cell changes the membrane potential from -70mV to +30mV. The inside of the cell become more positive than outside of the cell.

Thus, the correct answer is option (a).

8 0
3 years ago
Is grass a living thing
pav-90 [236]

why yes it is

my proof : Plants are living because they grow, take in nutrients and reproduce. Trees, bushes, a cactus, flowers and grass are examples of plants. Plants are also living things. Plants are living because they grow, take in nutrients and reproduce.

4 0
2 years ago
After listening to Janetta's heart for several seconds, her doctor told Janetta that she has an incompetent right atrioventricul
3241004551 [841]

Answer:

Swishing sound.

Explanation:

Human heart produces unique sound when blood flows from one chamber to the next chamber. The two main sounds produced by heart are lub abd dub sound.

The doctor's examine the Janetta's heart and told that she has incompetent right atrioventricular valve. The doctor must have heard the swishing sound after the closing of right atrioventricular valve. This sound is the direct indication of incompetent AV valve.

5 0
2 years ago
.What are the functions of the cell membrane?​
Alona [7]

Explanation:

The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.

5 0
2 years ago
Higher viscosity of blood will increase the amount of stress placed on the heart while it is pumping. Viscosity of blood is high
Paul [167]

Answer:

C) hematocrit is highest

Explanation:

The viscosity is the property of the fluid substance related to the flow of the resistance. The flow of the resistance increases when the amount of content in the fluid increases.

The flowing blood contains the water and the other components like the cells and proteins therefore it also exhibit the viscosity. The viscosity in blood happens when the cells and molecules interact with each other therefore measure of these components indicated about the viscosity of the blood.

The hematocrit is the ratio of the proportion of the red blood cells present in the blood to the total volume of the blood. The viscosity of blood, therefore, increases when the hematocrit is high and decrease when the hematocrit component is low.

Thus, Option-C is the correct answer.

7 0
3 years ago
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