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jeka94
3 years ago
8

The majority of the cell membrane is made from _________________________ and has ______________ layers.

Biology
1 answer:
Alja [10]3 years ago
3 0

Answer:

The majority of the cell membrane is made from phospholipids and has 2 layers

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At the site of the rough endoplasmic reticulum, proteins that are destined for secretion are manufactured. Insulin is a protein-
Eva8 [605]

Answer:

The type of vesicular transport involved in the exporting of protein-based hormones, such as insulin, into the bloodstream is regulated exocytosis.

Explanation:

In general terms, exocytosis is a type of active transport that allows intracellular substances are released to the extracellular space, through of vesicles that fuse with the plasma membrane, which allow the exit of substances from inside the cell.

Regulated exocytosis is the specific vesicular transport for the secretion of substances, such as hormones. For this type of transport to exist, the presence of an extracellular signal is required, which will activate the fusion of the vesicles.

In the case of insulin, the external signal originates with the increase in blood glucose levels, a signal that penetrates the intracellular space and generates an increase in insulin production in the islets of Langerhans (pancreas).

Before insulin secretion occurs, the cell must be depolarized, allowing calcium to enter, which promotes transport by regulated exocytosis of insulin to the extracellular space.

Learn more:

brainly.com/question/1109181

4 0
3 years ago
What organism is most specialized? Cat, ant, bacteria, or unicellular algae
bulgar [2K]

Answer:

Cat

Explanation:

Because cat is a multi cellular organism with more complexity.

3 0
3 years ago
Read 2 more answers
The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that
qwelly [4]
The most plausible hypothesis is: Tropical regions generally have more available water and higher levels of solar radiation. They also have very high rates of immigration and very low rates of extinction.

explanation:
Water is essential for an abundance of life, and sunlight is the means by which the whole food chain receives energy. Plants convert the sunlight into food, herbivores eat them, and other animals eat herbivores.

Hope this helps, and muchas luck on your biology.
7 0
3 years ago
Please describe the process of natural selection in your own words by using an example.
irina1246 [14]

Answer:

natural selection is animals slowly adapting to its environment

an example is giraffes, giraffes with longer necks will be able to consume more food than giraffes with shorter necks as they they can reach for the leaves on trees. over time the giraffes with shorter necks become extinct and giraffes with longer necks still remain.

3 0
2 years ago
Please help... Only numbers 4,5 and 9
Alex73 [517]
4:
Independent Variable: Photosynthesis
Dependent Variable: Starch

Starch is a product of photosynthesis. Without photosynthesis, starch cannot form. Therefore starch is dependent on photosynthesis.

5:
Independent Variable: Temperature
Dependent Variable: Animal Metabolism

Animal metabolism will only be affected if the temperature of the room changes. Therefore animal metabolism is dependent on temperature.

9:
Independent Variable: Rainfall
Dependent Variable: Thickness of growth rings

The thickness of the tree's growth rings are determined by the amount of rainfall. Therefore the thickness of growth rings are dependent on rainfall.
4 0
3 years ago
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