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fredd [130]
3 years ago
14

Mutations that hinder the survival of an organism

Biology
1 answer:
topjm [15]3 years ago
4 0

Answer:

Mutations can affect an organism by changing its physical characteristics (or phenotype) or it can impact the way DNA codes the genetic information (genotype). When mutations occur they can cause termination (death) of an organism or they can be partially lethal.

Explanation:

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What is a friend?<br>hello guys anyone is here <br>good evening ​
alekssr [168]

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A friend is a person whom one knows and with whom one has a bond of mutual affection, typically exclusive of sexual or family relations.

4 0
3 years ago
What would be the best explanation for why myelinated fibers conduct signals faster than unmyelinated fibers?
Sliva [168]

Answer: The diffusion of ions along the axoplasm is faster,in myelinated compare to unmyelinated,

Neurons are the structural and functioning units of nervous system.They are the vehicles for transmission of impulses as electrical signals from one part of the cells,and from one part of the body to another.

The basic structural components of a typical neuron are the cellbody, the axon, and the dendrites.

Based on structure neurons are classified as myelinated and unmyelinated.This is based on the the surrounding layer of myelin sheath around the axon. The myelin provides the insulating layer for the axon.And ensures fast movement of impluses.

In myelinated neurons the myelin sheath are interrupted at intervals by gaps along the length of the axon called Nodes of Ranvier. These gaps contains more Na-K channels for influx and out-flux of K and Na+ ions for transmission of impulses.

The cytoplasm of axon is called axoplasm,Since this is surrounded by myelin sheath which contains Na-K+ channels,The rate of diffusion of ions along  these channels is faster for depolarization to take place than in unmyelinated neurons. Inaddtion as these ions  diffusion increases,its jump faster at the nodes of Ranvier (saltatory conduction) to the next axoplasm which further speed up the rate of transmission.

Unmyeinated lacks myelin sheath,therefore the exchange and  the rate of diffusion of ions along the axons is low.

Explnation:

6 0
2 years ago
Why is this process of moving molecules in and out of cells through a protein channel called "facilitated" diffusion?
myrzilka [38]

Answer:

Because it uses a carrier at the cell membrane

Explanation:

8 0
2 years ago
How can pollution affect the level of oxygen in water? Why is this <br> important?
xeze [42]

Answer:population can affect the level of oxygen in water because of the too much of oxygen being released

Explanation:

3 0
2 years ago
The amount is moisture in the air is commonly expressed as _______ humidity.
Gnoma [55]

Answer: Could be B or C

Explanation:

Absolute has many meanings but moisture is wet

3 0
3 years ago
Read 2 more answers
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