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3 years ago

True or false ? Cell membranes are selectively permeable, allowing only some materials to cross the cell membrane. This

Biology

2 answers:

Nikolay [14]3 years ago

4 0

Answer:

True

Explanation:

Cell membranes are selectively permeable because of the structure of the phospholipid bilayer.

This bilayer only lets certain things in because it depends on the polarity, size, and type of molecule.

For example, glucose molecules are too large to enter. But, carbon dioxide molecules can go in and out easily because of their small size.

devlian [24]3 years ago

4 0

Answer:

This statement is True

“One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. The lipid bilayer is selectively permeable to small, nonpolar substances. Proteins in the cell membrane include cell-surface markers, receptor proteins, enzymes, and transport proteins.”

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Acetylcholinesterase (AChE) is a protein that catalyzes the conversion of acetylcholine to acetate and choline. When the concent

miv72 [106K]

The correct statement is that the concentration of acetylcholine will be inhibited by enzymes and can cause several diseases as follows:

Alzheimer's disease-related to damage to brain cells,
memory loss,
and thinking ability.

How to reduce the symptoms of these diseases is to use drugs that contain cholinesterase inhibitors.

<h2>Further Explanation </h2>

Acetylcholine is a neurotransmitter that plays an important role in the functioning of the autonomic nervous system. Acetylcholine is one of the most commonly recognized neurotransmitters or nerve stimulating chemicals. These neurotransmitter compounds can be found in the nervous system.

There are several side effects of the acetylcholine drug, which are as follows:

Can cause a lot of sweat
Excessive salivation
Stomach ache
Headache
Blood vessel dilation
Nausea and vomiting
Diarrhea is a sign of an increase in parasympathetic tone.

Learn More

about chemicals brainly.com/question/8735339
about enzymes brainly.com/question/6577765

Details

Grade: Middle School

Subject: Biology

Keyword: chemicals, enzymes, Acetylcholine, neurotransmitter

5 0

3 years ago

Read 2 more answers

What is the movement of water from ocean to the atmosphere and back?

adoni [48]

Explanation:

The hydrologic cycle describes the pilgrimage of water as water molecules make their way from the Earth's surface to the atmosphere, and back again. This gigantic system, powered by energy from the sun, is a continuous exchange of moisture between the oceans, the atmosphere, and the land.

8 0

3 years ago

If you dissected an owl pellet and found several of the skulls shown, what would you conclude is the preferred prey of this owl?

zavuch27 [327]

Answer:

The answer is C. mouse

Explanation:

I just did it on a test

8 0

3 years ago

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What type mutation are most harmful to an organism

Ghella [55]

Answer:

type 1

Explanation:

Because an insertion or deletion results in a frame-shift that changes the reading of subsequent codons and, therefore, alters the entire amino acid sequence that follows the mutation, insertions and deletions are usually more harmful than a substitution in which only a single amino acid is altered.

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3 years ago

Please help with this

Tanya [424]

Test One: All short fur
Phenotype ratio: 4:0
Test Two: three short fur and one long fur
Phenotype ratio: 3:1
Test Three: all long fur
Phenotype ratio: 4:0
Genotypes for fur length dominant
G: FF, and Ff (These are the genotypes for short fur, short fur is a dominant gene.
P: Short fur is dominant
Genotypes and phenotypes for fur length recessive
G: ff
P: Long fur is recessive
If you have a hamster with short fur, the possible genotypes the hamster could have is FF, and Ff
If you have a hamster with long fur, the possible genotype is ff.

5 0

2 years ago