All categories

3 years ago

Which of the following statements about plant cell walls is true?

Biology

1 answer:

Leya [2.2K]3 years ago

7 0

Answer:

Explanation:

1. The cell is present in some type of cells. It is found in plants and bacteria and some others. It is present or found outside the plasma membrane.

2. The functions of cell wall are that it provides tensile strength and protection to the cell against many type of stress. It also plays very important role in many others protections for the cell. There are two layer, named as primary cell wall and secondary cell wall.

3. Composition of Plant cell walls is that they are primarily made of cellulose. Cellulose fibers are linear long polymers of around 100 molecules of glucose. These fibers cluster into bundles, known as or called microfibrils. In plants the microtubule cytoskeleton are present, and there function is that they directs the orientation of cell wall as in which orientation cellulose is deposited in the cell wall.

You might be interested in

Distinguish between voluntary and involuntary actions.

sukhopar [10]

<h2>GREETINGS!</h2><h2>_____________________________________</h2>

<u>ANSWER</u><u>:</u>

<h2><u>DEFINITIONS</u></h2><h2>_____________________________________</h2><h3><u>VOLUNTARY MUSCLES:</u></h3>

Voluntary muscles are those muscles which work under our conscious control and can be controlled at will also we can choose choose them when to use and when not to use. These are simply SKELETAL MUSCLES attached to the bone, so all the movements of hand and legs and whatever u do are because of voluntary muscles.

<h3><u>__________________________________________________</u></h3><h3><u>INVOLUNTARY MUSCLES:</u></h3>

the muscles in the human body that do not work under our will and we cant control them. They are mainly controlled by the autonomic nervous system in the body. So, involuntary muscles include all the muscles whose activity which is not controlled by our NERVES. They are also called SMOOTH MUSCLES since they are present as the visceral layer over the organs.

<h2>_____________________________________</h2><h2>DIFFERENCES</h2>

1) VOLUNTARY MUSCLES are under our control but INVOLUNTARY MUSCLES are not under our control

2) VOLUNTARY MUSCLES are also known as skeletal muscles but INVOLUNTARY MUSCLES are also known as smooth muscles

3) VOLUNTARY MUSCLES are attached to the bones in the body, but INVOLUNTARY MUSCLES are attached to the soft hollow internal organs.

4) VOLUNTARY MUSCLES are controlled by the somatic nervous system. INVOLUNTARY MUSCLES are controlled by the autonomic nervous system.

5) VOLUNTARY MSUCLES require more energy. INVOLUNTARY MUSCLES require less energy.

<h2>_____________________________________</h2><h2>HOPE THIS HELPS!</h2><h2 />

8 0

3 years ago

All objects anywhere on or near the Earth are

Veronika [31]

C. They are pulled toward Earth by the force of gravity (and in Physics you would learn that the deceleration speed of gravity is -9.8m/s/s)

4 0

3 years ago

Read 2 more answers

Figure 4

Dafna1 [17]

Answer:

Explanation:

6 0

3 years ago

Can someone please help me with this virtual lab. Grade 11 biology<br> Thank you!

Degger [83]

Part A done, you will find the answers below.

<u>Hope this helps!</u>

7 0

2 years ago

Sort the following words or phrases as descriptions or examples of fibrous proteins, globular proteins, or both. Exhibit primary

Debora [2.8K]

<u>Answer:</u>

<em>Polymers of amino acids can be both fibrous as well as globular protein. Hemoglobin is a globular but the collagen is the fibrous protein both being the amino acids.</em>

<u>Explanation:</u>

<em>Soluble in water: </em>globular protein is soluble in water.

<em>intermediate filaments:</em> fibrous protein

<em>Insoluble in water:</em> fibrous protein is insoluble in water.

<em>function as structural proteins in the cell:</em> fibrous protein.

<em>some function as enzymes: </em>globular protein.

<em>structure is somewhat spherical;</em> globular protein.

<em>structure is rod-like:</em> fibrous protein

7 0

3 years ago