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Dafna11 [192]
2 years ago
5

Urgent. will mark brainiest. Explain what happens in the nervous system when your finger is hurt. Please actually answer!

Biology
1 answer:
Nostrana [21]2 years ago
6 0
Motor neurones are activated and the muscles of your arm contract, moving your hand away from the sharp object.
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Answer: Large molecules and wastes move through the membrane through forms of active transport- endocytosis and exocytosis.

Explanation:

Molecules are moved across the cell membrane via different mechanisms like diffusion, facilitated diffusion and passive transport; however, some very large molecules require specialized types of active transport to cross over- these are endocytosis and exocytosis.

During endocytosis large molecules cells and cell fragments moved across the plasma membrane through a process of <em>invagination;</em> piece of the external cell membrane falls into itself and forms a small pocket that surrounds the target molecule this breaks off from the membrane to form an intracellular vesicle. Different methods of endocytosis such as <em>phagocytosis, pinocytosis </em>and receptor-mediated <em>endocytosis</em>, take in cells,  water and targeted substances respectively.

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6 0
3 years ago
What are chemical and physical changes for
Oksana_A [137]

Answer:

physichal is like ripping paper chemical change is like boiling an egg or burning a log or rusting nails the atoms and chemical strains change

Explanation:

3 0
3 years ago
No one gets this right
yuradex [85]
I assume the answer is man-made, correct?
8 0
3 years ago
PLEASE HELP PLSSSSSS
Vedmedyk [2.9K]

Answer:

1. it's an atom

Explanation:

An atom is the smallest particle of an element, having the same chemical properties as the bulk element. The first accurate theory explaining the nature of matter was Dalton's Atomic Theory: 1. All matter is composed of atoms, and atoms are indivisible and indestructible.

5 0
2 years ago
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