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dmitriy555 [2]
3 years ago
14

The myelin sheath that covers many cns axons is formed by

Biology
1 answer:
nirvana33 [79]3 years ago
4 0

The myelin sheath that covers many cns axons is formed by oligodendrocytes.

Oligodendrocytes are type of neuroglia (non-neural cells found in central nervous system) with protective, trophic and supportive role. Their function is to insulate axons (with myelin sheath), in the central nervous system (CNS) which is, equivalent to the function performed by Schwann cells in the peripheral nervous system (PNS).

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Achondroplastic dwarfism is a dominant genetic trait that causes severe malformation of the skeleton. Homozygotes for this condi
AleksandrR [38]

Answer:

Jane: Aa

Matthew: aa

Explanation:

Jane is a heterozygous woman, which means that she is dominant for this genetic trait while Matthew is homozygous that did not inherit the achondroplastic dwarfism trait from his parents, that is why he is alive.

If we draw a Punnett square, we can see that some of their children will inherit the trait while others will not.

<u>   ║ a      ║ a</u>

<u>A  ║   Aa ║Aa</u>

a  ║ aa    ║ aa

5 0
3 years ago
Which of the following are functions of the nervous system? Check all that apply.
IgorLugansk [536]
<span>-The nervous system processes information from receptors that detect changes in the environment.

-The nervous system coordinates the systems of the body.

-The nervous system sends out appropriate responses to react to changes in the environment.

-The nervous system maintains homeostasis.</span>
3 0
3 years ago
Read 2 more answers
A student observers melting crayons. Which of the following describes what they saw? A. A chemical change. B. A physical change.
tatyana61 [14]

Answer: A physical change

Explanation: since the melted they are still Crayons. You can freeze it and it would still be a crayon. So it was only a physical change

8 0
2 years ago
A recently discovered enzyme is found to have maximum activity in a pH range of 6-8. It is thought that histidine and cysteine r
goldenfox [79]

Answer:

Cysteine

Explanation:

<u>Determine the Amino acid that is primarily involved in Binding </u>

The Amino acid that is primarily involved in Binding is Cysteine. while the other Amino acid ( i.e.  Histidine ) will be involved in Catalysis.

since the enzyme is functional at pH 6 to 8. and Cysteine has a pH of 5, it should be deprotonated and used primarily for Binding .

4 0
2 years ago
Most plant growth takes place in the ____________________ of the root
Papessa [141]

Answer: Primary Growth

Most primary growth occurs at the apices, or tips, of stems and roots.

Explanation:

7 0
3 years ago
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