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Lesechka [4]
2 years ago
7

I need help please

Biology
2 answers:
elena-14-01-66 [18.8K]2 years ago
7 0

Answer:

B) A volcanic lava flow cools and hardens on the surface.

Explanation:

11Alexandr11 [23.1K]2 years ago
3 0

Answer:

Explanation:

D i think because subducing forms metamorphic rock(subduction is where two convergent plate boundries run into each other bringing down rock into the inside of the earth). Check the comments to see if im right

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3 Peroxisomes are cellular organelles: A. with their own genome B. present only in protists C. without membrane OR D. collaborat
VLD [36.1K]

Answer:

E.site of some oxidation reactions

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2 years ago
______ is the process by which nerve cells are coated with far cells that enhances the speed and efficiency of the information t
givi [52]

Answer:

Myelination

Explanation:

The covering of myelin around the axons is called the myelin sheath. This myelin sheath helps in transfer of information faster and also in complex  processes of the brain. The process of myelination begins in the PNS (peripheral nervous system).

The myelinated section are seperated from each other with a gap called nodes of ranvier. Glial cells (oligodendrocytes) forms the myelin sheath in the central nervous system and schwann cells (glial cells) forms the myelin sheath in peripheral nervous system. The propagation of electrical impulse in the myelinated fibers is by saltatory conduction that is from one node to another.

5 0
3 years ago
Read 2 more answers
What is the biological significance of the temperature at which the amylase
kati45 [8]

Answer & explanation:

Amylase is part of enzymes, a group of large peptide molecules (formed by amino acids) whose role is to catalyze reactions in order to facilitate the synthesis of other biological molecules.

Amylase is found mainly in saliva (in the form of salivary amylase, or ptialin), acting in the breakdown of starch and glycogen in foods, reducing them to smaller particles, facilitating their digestion and absorption.

The action of enzymes depends on certain specific conditions, called optimal conditions. In the case of <u>amylase</u>, it depends on an optimum pH of 7 (neutral) and an optimum temperature of approximately 37 ° C.

This enzyme can still act between 35 ° C and 40 ° C, but below 35 ° C it is inactivated, preventing its functions from being performed, and above 40 ° C it suffers denaturation, causing changes in its structures.

Thus, it is concluded that the <u>temperature</u> (under optimal conditions) is important for enzymes because it keeps their actions and structures in proper operation.

3 0
3 years ago
Where will you find bones in a cartilaginous fish?
Crazy boy [7]
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2 years ago
Nails and hooves are made of?
lawyer [7]
Keratin ———————————-
4 0
3 years ago
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