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guajiro [1.7K]
3 years ago
7

The diffusion of a substance into or out of a cell requires

Biology
1 answer:
Kitty [74]3 years ago
5 0

Answer:

Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane. Gas exchange in gills and lungs operates by this process. Carbon dioxide is produced by all cells as a result of cellular metabolic processes.

Explanation:

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Within a double-stranded DNA molecule, adenine forms hydrogen bonds with thymine, and cytosine forms hydrogen bonds with guanine
vova2212 [387]

Within a double-stranded DNA molecule, adenine forms hydrogen bonds with thymine, and cytosine forms hydrogen bonds with guanine This signifies <u>determining the type of protein produced</u>

DNA's unique structure enables the molecule to copy itself during cell division. The double-helix shape allows for DNA replication and protein synthesis to occur. Each of the two strands in double-stranded DNA acts as a template to produce two new strands.

Replication relies on complementary base pairing, that is the principle explained by Chargaff's rules: adenine (A) always bonds with thymine (T) and cytosine (C) always bonds with guanine (G).

To learn more about DNA molecule, here

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2 years ago
Help ASAP , easy 15 points and a brainly for the first one to reply , just answer the 2 questions
san4es73 [151]
The first one is the 3rd option and the 2nd one is also the 3rd option
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4 years ago
Which of the
trasher [3.6K]

Answer:

A. intrusive igneous rock

Explanation:

6 0
3 years ago
Read 2 more answers
Sally was exposed to hepatitis. Her doctor gave her an injection containing
expeople1 [14]

Answer:

The correct answer is - passive immunity - artificially acquired.

Explanation:

Passive immunity is the immunity that involves giving or acquiring antibodies from other sources instead of developing them on one's own. This type of immunity can be natural and artificial. Mother breastfeed the babies, is the natural passive immunity example as milk also contain antibodies required for immunity of babies.

Artificial passive immunity is the immunity that comes from injecting the antibodies created in different animals or persons which called antiserum or vaccines such as snake antivenom.

5 0
3 years ago
In your own words, give a brief overview of the process of photosynthesis. Include where each phase place within a plant cell.
vodka [1.7K]

Answer:

Photosynthesis has two parts: the light-dependent reactions and the dark reactions (the Calvin cycle). Photosynthesis in a general sense, uses CO2 and water to create C6H12O6 (glucose) and oxygen. The light-dependent reactions use water to make oxygen, and a reduced energy carrier (NADPH) is also created. The Calvin cycle uses carbon dioxide and ATP to create G3P for glucose.

The light-dependent reactions occur on the membrane of the thylakoid and also involve shuttling electrons across different complexes (photosystem II and photosystem I), eventually causing ATP to be created with a proton gradient.

The light-independent reactions/Calvin cycle occur in the stroma of the chloroplast and also involve shuffling carbons around. Carbon dioxide is processed in three stages, and glucose is made from 6 CO2.

7 0
3 years ago
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