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DIA [1.3K]
2 years ago
14

Which event takes place first in the stages before the birth of a star? Gravity pulls gas and dust together. A protostar forms a

s mass increases. Nuclear fusion begins under high pressure. A protostar collapses and becomes denser.
Biology
2 answers:
user100 [1]2 years ago
4 0

Answer:

Gravity pulls gas and dust together.

Explanation:

nebula (as the first stage is called): the first stage before the birth of star is seen by a slow rotating, clouds of cold gas and dust. the nebula condenses into a huge globule of gas and dust which shrink under its own gravity

umka2103 [35]2 years ago
3 0

Answer:

(A) Gravity pulls gas and dust together.

Explanation:

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A small percentage of the body’s iron supply circulates freely in the blood, bound to a protein called transferrin. Transferrin
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Answer:

What best describes how transferrin is transported through the erythrocyte plasma membrane is receptor-mediated endocytosis.

Explanation:

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The other options are not correct because:

<em>     A. </em><u><em>Exocytosis</em></u><em> implies the exit of substances from the cell.</em>

<em>     B. </em><u><em>Pinocytosis</em></u><em> involves the invagination of the membrane to incorporate soluble substances into the cell.</em>

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