1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DedPeter [7]
4 years ago
15

What is the myelin sheath, and why does it speed up nerve transmissions?

Biology
1 answer:
oee [108]4 years ago
4 0

Answer:

Myelin sheaths refer to the covering of fatty tissue, which safeguards the nerve cells. These cells are the components of CNS that conduct messages back and forth between the brain and the remaining parts of the body.  

The majority of the nerve fibers are enveloped by an insulating, fatty sheath known as myelin that functions to accelerate the impulses. The myelin sheath comprises periodic breaks known as nodes of Ranvier. Hopping from nodes to nodes, the impulse can pass much more briskly than if it had to move along the whole length of the nerve fiber.  

You might be interested in
Question 4 of 10
Zepler [3.9K]

Answer:

(B) It is better for the cell if most molecules are prevented from entering.

I hope this helped at all.

5 0
3 years ago
In eukaryotes, extranuclear inheritance occurs when genetic information is transmitted by mechanisms other than through nuclear
Vlad [161]

Answer:

- cpDNA organization is more similar to that of prokaryotes than eukaryotes

- chloroplast chromosomes contain genes that are involved in photophosphorylation

6 0
4 years ago
The lower epidermis is covered with cuticle.<br> O True<br> O False
victus00 [196]

Answer:

True

Explanation:

4 0
2 years ago
In a DNA double helix an adenine of one strand always pairs with a(n) _____ of the complementary strand, and a guanine of one st
notka56 [123]

Answer:

adenine pairs with Thymine  and guanine always pairs with cytosine respectively

Explanation:

In DNA nucleotide subunits, there are four nitrogenous bases:

  •    Adenine (A)
  •    Thymine (T)
  •    Cytosine (C)
  •    Guanine (G)

Each of these bases can be divided into two categories: purine bases and pyrimidine bases.

Adenine and guanine are examples of purine bases. This means their structure is a nitrogen-containing six atom ring joined with a nitrogen-containing five atom ring that share two atoms to combine the two rings.

Thymine and cytosine are examples of pyrimidine bases.

Note that  RNA replaces thymine with a different pyrimidine base called uracil (U).

The complementary base pairing rule, Chargaff's rule states that DNA base pairs are always adenine with thymine (A-T) and cytosine with guanine (C-G). A purine always pairs with a pyrimidine and vice versa. However, A doesn't pair with C, despite that being a purine and a pyrimidine.

8 0
4 years ago
At the time this article was written (2011) how many and what types of genomes have been sequenced? Give a general summary.
STALIN [3.7K]

Answer:

30 cancer types, heart disease and diabetes, and in inherited diseases that cause physical malformations, developmental delay and metabolic diseases

Explanation:

8 0
3 years ago
Other questions:
  • Explain why most volcanoes are found at plate boundaries
    7·2 answers
  • What is the ideal level of water temperature for aquatic life?
    5·1 answer
  • An important feature of modern classification systems is that they
    7·1 answer
  • Why is it important that nadp+ reductase is on the stromal side of the thylakoid membrane?
    5·2 answers
  • Explain what would happen if plankton were removed from the marine food webs.
    11·1 answer
  • If a cell skipped metaphase during mitosis, how might this affect the two daughter cells?
    9·1 answer
  • Describe the different ways that the carbon cycle interacts with earth’s living organisms.(Name at least 2 ways.)
    13·1 answer
  • What effect will a virus in the lytic cycle have on an organism apex
    7·1 answer
  • Will mark brainliest
    7·1 answer
  • Earthquake and faults​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!