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balu736 [363]
3 years ago
7

Majority of fresh water is not accessible because it is?

Biology
1 answer:
Alinara [238K]3 years ago
7 0
About 0.3 percent is about the safe amount of water humans may consume, the other 99 percent is in oceans, soil, icecaps, and floating in the atmosphere.
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Cells need to bring in molecules to carry out cellular processes. Often, this requires moving the molecules across the cell memb
aniked [119]

Answer:

B (active transport using ATP)

Explanation:

Movement of substances normally occur in the direction of concentration gradient/difference i.e. the difference in concentration of a substance across a membrane. Letting molecules diffuse or pass down their concentration gradient does not require energy but pumping those molecules against gradient requires energy in form of Adenosine triphosphate (ATP). This process is called Active transport.

In order to perform certain cellular processes, cells need to move substances from their surroundings into the cell across their cell membrane. Moving this substances against the concentration gradient between the cell membrane and its extracellular fluid requires energy (ATP).

An example is the sodium-pottasium pump employed by animal cells in which they expend energy to move K+ molecules into the cell and Na+ molecules outside the cell against the concentration gradient of their cell membrane and extracellular solution.

5 0
3 years ago
Alisa is studying the way in which men and women select partners to marry. She notes that across 37 cultures, one study found th
Alja [10]

Answer:

The correct answer will be option-A

Explanation:

The practice of marriage is practised in every culture which is associated with the union of the boy and a girl to which they are committed to spending a life-long relationship.

The studies on the preferences shown by the woman who has to get married have to look for the boys who are career-oriented which could provide a good earning to feed them and their family and fond of children to establish a family which will help develop the stronger relationship between them.

The girls ignored the attractiveness feature of their spouses as in a long term relationship attractiveness does not matter because of the feeling of love and strong bond between them.

Thus, option-A is the correct answer.

4 0
3 years ago
Is a enzyme a protein
spayn [35]

Answer:

Yes

Explanation:

An enzyme is a protein that changes the rate of a chemical reaction.

6 0
2 years ago
What is translation, in biology
sergiy2304 [10]

Answer:

Translation is the process of translating the sequence of a messenger RNA (mRNA) molecule to a sequence of amino acids during protein synthesis. The genetic code describes the relationship between the sequence of base pairs in a gene and the corresponding amino acid sequence that it encodes.

7 0
2 years ago
Name the macromolecule that fills the cytoplasm (pointer tip) of cells of this connective tissue.
Pavel [41]

Answer:

Lipids.

Explanation:

Lipids are macromolecules that are found mostly in the cytoplasm of the cells. Adipocytes cells, a form of connective tissue store lipids as droplets and filled the cytoplasm of cells.

8 0
3 years ago
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