BIOLOGY MIDDLE SCHOOL

Which phrase best describes the function of cilia? A.
allow the cell to be motile

B.
assist with protein production

C.
allow the cell to use energy

D.
assist with cellular respiration

Answers

Answer 1
Answer:

Cilia usually allows the cells to become motile. The correct option is A.

What is cilia?

Cilia are tiny hair-like organelles that are attached to the cellsurface and are found on almost all polarized cell types in the human body.

They have been customized as important devices for variety of cellular functions, which explains why cilia-related abnormalities can affect numerous organsystems.

The bronchus in the lungs is lined with cilia, which are hair-like projections that move organisms and debris up and down the airways.

Goblet cells are scattered all across the cilia and secrete mucus, which protects the bronchus lining and traps microorganisms.

Motile cilia are found on the epithelialcells among many internal organs, including the lungs, trachea, and digestivesystem. They are also discovered on protozoans like Paramecium and aid in locomotion.

Thus, the correct option is A.

For more details regarding cilia, visit:

brainly.com/question/15200286

#SPJ2
Answer 2
Answer: There are no cells in the human body that are motile because of cilia. Cilia are cytoplasmic extensions of the plasma membrane of certain cells that function in moving particles. In microorganisms, the paramecium is ciliated, and it IS motile because it usus the cilia to move.

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a substance that moves  across a cell membrane without using the cells energy tends to move?

a.)  away from the area of equilibrium

b.) away from the area where it is less concentrated.

c.) away from the area where it is more concentrated

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Answers

Answer: The correct option is C.) away from the area where it is more concentrated.

A substance that moves across a cell membrane without using the cells energy tends to move from an area of high concentration to an area of low concentration.

This is known as Passive transport. In this transport, substances move down the concentration gradient i.e from an area of high concentration to an area of low concentration. It is also called simple diffusion as no energy is required in this process.
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Answers

Answer:

For population increase two factors or ways are described which are birth or death, immigration and emigration.

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Explanation:

A population's increase is resolved  by  death, birth, immigration, and emigration. When a population's birthrate is higher than its death rate the population size, The population size is rises.

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Export. Death. 
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