All categories

2 years ago

The plasma membrane is involved in which activities? Choose one or more:

Biology

1 answer:

Triss [41]2 years ago

3 0

Answer:

1. import and export of nutrients and wastes

2. cell signaling

3. cell recognition

4. cell growth and motility

Explanation:

Plasma membranes are selectively permeable which means it only allows selective molecules to cross through it. So the plasma membrane helps in the import and export of nutrients by simple diffusion, facilitated diffusion or through active transport.

There are membrane protein embedded in the plasma membrane which have different role. Some help in cell signaling like GPCR, some help in cell recognition and some act and transporter proteins.

The plasma membrane is also responsible for cell growth and motility because it allow the raw materials and signals to pass through it which is required by the cell to metabolize and grow. So 1,2,3,4 is the correct answer.

You might be interested in

Why are the large finches now living on the galÃ¡pagos islands different from the original source population from a nearby islan

Softa [21]

Answer:

The reasons are explained below -

Explanation:

The large finches living on the Galapagos islands are different from the original source population from a nearby islands because of the following reasons -

A natural selection favored only the large finches because they are more fit to the current environmental conditions.
A genetic drift has been occurred in the two populations living on the nearby islands.
Due to the separation of habitat on both the islands, the gene flow between the two islands is reduced.

All the above listed reasons are responsible for the difference in the finches found on the two islands.

3 0

2 years ago

the concentration of carbon dioxide in the atmosphere has been increasing for many years, how might this increase affect photosy

Nitella [24]

Answer:

the answer is

Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy.Increasing the light intensity increases the rate of photosynthesis, until some other factor a limiting factor becomes in short supply. At very high light intensities,photosynthesis is slowed and then inhibited, but these light intensities do not occur in nature.

Explanation:

8 0

2 years ago

The electrons in the outermost energy level are called........?

LenKa [72]

Answer:

Valence Electrons

Explanation:

4 0

3 years ago

Read 2 more answers

Explain the biological structure hierarchy of the human body and the role of homeostasis in maintaining the body. Include the fo

Nuetrik [128]

Answer:

1. Biological structure of the human body

The human body is organized in different levels according to their complexity.

The levels are the folowing (increasing complexity).

1. Atom (N, O, C,..)

2. Molecule (Protein, lipids, water...)

3. Organelle (mitochondria, golgi apparatus,...)

4. Cell (blood cells, bone cell,..)

5. Tissue (connective tissue, epithelial tissue,..)

6. Organ (lungs, kidney,..)

7. Organ system (skeletal system, muscuar system,...)

8. Organism (the human body)

Each of the levels is formed by an agrupation of the previous level. For example, cells are formed by a number of organelles, and a group of cells form a tissue.

Cells are the basic units of structure of the body, and there are different types of them.

2. Homeostasis

Homeostasis is a process of the body by which the organism works to maintain a stable internal environment, while adjusting to changes in the external environment.

This process is possible because of the work of both the nervous system and the endocrine system. While the first controles the body's activities and detects the necesity of adjustments, the second regulates the activities by using hormones.

6 0

1 year ago

Which two statements describe organ systems working together to remove

Tpy6a [65]

I think should do the trick A and D

3 0

2 years ago