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Salsk061 [2.6K]
3 years ago
14

.What are the functions of the cell membrane?​

Biology
1 answer:
Alona [7]3 years ago
5 0

Explanation:

The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.

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Where are tropical wet climate found in the United states
jek_recluse [69]

East of the 100th meridian, the climate is humid continental in northern areas (locations above 40 north latitude), to humid temperate from the lower Midwest eastward to the middle Atlantic coast regions, to humid subtropical in the Gulf and south Atlantic regions.

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4 years ago
"Man is born free, and in everywhere he is in chains." Explain.
xxMikexx [17]

Answer:

With the famous phrase, "man is born free, but he is everywhere in chains," Rousseau asserts that modern states repress the physical freedom that is our birthright, and do nothing to secure the civil freedom for the sake of which we enter into civil society.

:)) BRAINLIEST?

6 0
3 years ago
The bohr model of the atom stated that the energy of an electron was quantized and therefore electrons could only exist in certa
rjkz [21]

Explanation:

Bohr model is able to explain the electromagnetic spectrum produced by different atoms of different elements. This is because an electron around the nucleus of an atom occupies distinct orbital levels around the nucleus and not in between. When an electron absorbs a specific wavelength of electromagnetic spectrum it 'hops' to an upper electron energy level equivalent to this wavelength of radiation. When the atom 'hops' to a lower orbital level it releases ta specific wavelength of radiation that is equivalent to the difference in the energy levels. This was unaccounted for in the Rutherford's planetary model.

The electron cloud model is thought to be an improvement on the Bohr model because it accounts for the Heisenberg Uncertainty Principle which stipulates that it is impossible to ascertain the momentum and location of an electron at the same time (because merely viewing an electron using light -or any kind of radiation - will change its direction and velocity). This model explains the likely position of an electron using probabilistic equations. The electron cloud model can therefore be used to explain bonding between atoms.

Learn More:

For more on atomic theories check out;

brainly.com/question/12412328

brainly.com/question/12083113

#LearnWithBrainly

3 0
4 years ago
Where does the energy for practically every chemical reaction come from?
faltersainse [42]
All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. (sorry if that’s not helpful.)
7 0
3 years ago
What does the sequence of DNA determine?
ArbitrLikvidat [17]

Answer:

It determines everything about you.

Explanation:

Sequencing DNA means determining the order of the four chemical building blocks - called "bases" - that make up the DNA molecule. The sequence tells scientists the kind of genetic information that is carried in a particular DNA segment.

3 0
4 years ago
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