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qaws [65]
3 years ago
10

Plasma membranes are selectively permeable. This means that

Biology
1 answer:
kenny6666 [7]3 years ago
8 0

Answer: ONLY CERTAIN SUBSTANCES CAN PASS THROUGH IT

Explanation:

1 only gases and water can pass through it.

2 substances need permission to pass through it.

3 only certain substances can pass through it.

4 substances need carrier molecules to pass through it.

5 ATP is always needed to move molecules across the plasma membrane.

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Ill give a Brainliest if it is right
lukranit [14]

Neither of these are minerals, B.

Its not A because, they are not natural materials but instead made up of natural materials, like a rubber tree.

Its not C because, like I said, plastic is made from rubber trees, this garentees it doesnt have a crystal structure.

Its not D because, concrete is not a mineral and has indefinite composition.

4 0
3 years ago
Neurons in the hypothalamus regulate the activity of secretory cells in the anterior pituitary gland by:________
Jet001 [13]

Neurons in the hypothalamus regulate the activity of secretory cells in the anterior pituitary gland by releasing hormones. Pituitary gland basically store the hormones which is produce by the hypothalamus.

Hypothalamus connect the nervous and endocrine systems by way of the pituitary gland. Both are connected directly to the pituitary gland by a thin stalk which is called infundibulum.

Its main function is to secrete releasing hormones and inhibiting hormones that stimulate  the production of hormones in the anterior pituitary. FSH and LH both are produce and secret gonadotropins which regulated by the hypothalami releasing hormone, GnRH.  These are the releasing hormones which control the release of another hormone.

To learn more about the infundibulum here

brainly.com/question/17447860

#SPJ4

8 0
1 year ago
he typical human adult uses about 160 g of glucose per day, 120 g of which is used by the brain. The available reserve of glucos
evablogger [386]

Answer:

In humans, the major precursors from which glucose can be synthesized from are:

1. glycerol from triacylglycerols

2. glucogenic amino acids from protein.

3. Oxaloacetate formed from CO2

4. Pyruvate foem pyruvate carboxykinase

All there's are routes through which the body obtains glucose to replenish body glucose levels

3 0
3 years ago
Read 2 more answers
Cells in different organs, such as the brain and the heart, have different functions because
Irina18 [472]
The awnser is b there is a mutation in the gene
3 0
3 years ago
What does it mean that a gene exhibits codominance?
alukav5142 [94]
Essentially traits of both genes will be shown. Take heterochromia for example, where a person has a green eye and a blue eye, both have some part in developing a trait.
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3 years ago
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