Biology College

Different types of cells can have certain organelles and structures in common. Which types of cells definitely contain cell walls?
SC.912 L 14.3
O plant and animal cells
0 plant and eukaryotic cells
o plant and prokaryotic cells
animal and eukaryotic cells

Answers

Answer 1

Answer:

plant and eukaryotic cells (B)

Explanation:

animal cells have a cell membrane but no cell wall and prokaryotic organisms lack a nucleus or any other membrane bound cell organelle.

Answer 2

Plant and prokaryotic cells definitely have a cell wall. So, the correct option is C.

What is Cell wall?

Cell wall is defined as the structural layer that consists of polysaccharides and is present outside the plasma membrane which can be rigid, rigid and flexible. This provides protection to the cell from external factors that may be harmful to the cell and also provides structural support.

Plant and prokaryotic cells definitely have a cell wall. The cell wall of a prokaryotic cell is present under the capsule while the cell wall of a plant cell is a specialized form of extracellular matrix that surrounds each cell of a plant. This provides structural support to the cell and protects the cell against infection and mechanical stress

Therefore, the correct option is C.

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Related Questions

What role have nitrates and phosphates played in damaging Muddy Creek?

Answers

Answer:

Nitrates and phosphates lead to eutrophication and anoxia in the creek which caused aquatic animals to die and damaged the creek.

Explanation:

Nitrates (NO3-) are chemical compounds that contain nitrogen and oxygen molecules. They are salts that are commonly found in fertilizers and are soluble in water. Phosphates are also compounds that are used in agricultural processes.

Nitrates and phosphate found in water are usually from plants that  have been washed off by rain water and also from vehicles' exhaust.

When there are abnormally high levels of nitrates and phosphates in water, it becomes difficult for aquatic animals to survive. In bodies of water, the nitrates and phosphates become sources of food to algae and other plants, this causes them to become over stimulated, and lead to Eutrophication (a high concentration of nutrients) and Anoxia (lack of oxygen).

This causes the fishes to run out of oxygen and die. Then the water begins to change color (milky white or green), give off an offensive odor and gradually turns into a  swamp and eventually a meadow

Plants exchange carbon dioxide, water, and oxygen with their surrounding environment through openings in their called O A. leaves, stomata B. stems, sori OC leaves, xylem D. roots, guard cells​

Answers

Plants exchange gases with their surroundings through openings in their Leaves, Stomata.

List the ways how you can help make your commumity safe and healthy.
1.
2.
3.
4.
5.​

Answers

1.) Follow the rules and laws in place which are meant to protect us.
2.) Alert the proper authorities when you know someone is not following the laws in place to protect us.
3.) If you see someone in danger help them however you can.
4.) Create a community watch group to prevent crime and ensure safety of those around us.
5.) Have a free social distancing neighborhood workout group to keep people active during quarantine.

8. The central Dogma of Biology states:
a. DNA proteins ORNA
b. RNA O Proteins DNA
c. DNA RNA proteins
d. DNAO RNA mRNA

Answers

Answer:

Answer is C.

Explanation:

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Answers

Changes in a food chain can have a chain reaction on other species within the foodchain. For example, if less plants grew one year, less wildebeest will have what to feed themselves so wildebeest population will decrease and the buffalo who eats the wildebeest won’t have enough to eat etc

Describe the difference between codominance and incomplete dominance. Give 1 example of each.

Answers

Incomplete dominance is when one allele is not completely dominant over the other (blend in), and codominance is when both alleles affect the phenotype(appearance)

Example of incomplete dominance: a red flower mates with a with flower and makes an pink offspring

Example of codominance: a brown cow mates with a with cow and the offspring being with and brown polkadots

What causes the stoma to open?
A. When the guard cells are full of water, they become stiff and hold
the pore open.
B. When the guard cells get covered in wax, they become limp and
the pore opens
C. When the guard cells are empty, they become limp and the pore
opens.
D. When the guard cells inflate with oxygen, they become stiff and
the pore opens.

Answers

A. When the guard cells are full of water, they become stiff and hold

the pore open.

Two guard cells make up the stomata. The walls of these cells are thicker on the inside than they are on the outside. Stomata open when they take in water and close when they lose water due to the unequal thickness of the paired guard cells.When stomata open, they release water vapor and other gases into the atmosphere, including oxygen.A. When the guard cells are full of water, stoma become stiff and hold the pore open

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