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jekas [21]
3 years ago
10

Which of these structures forms a complete ring around the airway?

Biology
1 answer:
Hunter-Best [27]3 years ago
8 0

Tracheal cartilage .

Explanation:

Trachea is also known as wind pipe. It acts as passage for air that enters through nasal cavity and migrates to the lungs. The trachea is made up of tracheal rings. This provides flexibility to the wind pipe. The trachea divides into two bronchi that enters the left and right lungs.It has a covering called epiglottis that prevents entry of food while swallowing.

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These branching structures carry information towards the cell body of a neuron
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I think it's "What is Dendrites" hope this helped :-) 
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What happens to the functionality of a protein if the temperature changes
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The protein could become denature at extreme temperatures. When this happens its functionality could be incredibly reduced
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If a mutation occurred that increased the number of exons in a sequence of DNA, what impact would this have on the protein forme
erastovalidia [21]

Answer:

See the answer below

Explanation:

<em>An increase in the number of exons in a sequence of DNA would result in another protein with a longer amino acid sequence.</em>

<u>Exons are the coding part of a gene as opposed to introns. After transcription, the non-coding part of the gene - the introns - are removed by splicing and the exons are joined back together. The final RNA that will undergo translation consists of only exons. </u>

The longer the exons in a gene, the more the codons present in the corresponding mRNA from the gene, and the more the number of amino acids that would be translated from the mRNA. A longer amino acid chain would result in a different protein.

Hence, a mutation that causes an increase in the number of exons in a sequence of DNA would result in a different protein with a longer amino acid sequence.

5 0
3 years ago
In a species of snail, dark-shelled individuals are better hidden from bird predators in the shady forest, while light-shelled i
Harrizon [31]

Answer:

C. Disruptive Selection

Explanation:

Disruptive selection occurs when two extremes of continuous variation are favored more than intermediate traits.  

The extremes of continuous variation exhibited in this species of snail is the color of their shell which allows them to blend with the background of their habitat.  

The shady forest of the habitat makes the dark-shelled individuals to be better hidden from bird predators, while the light-shelled individuals are better hidden in well-lit brushy edge areas. This disruptive coloration exhibited by both individuals makes both individuals of this species of snail less vulnerable to predation.  

Both individuals of this species both extremities would naturally survive in this habitat as snails with intermediate extremities would be highly preyed on since there is no area of intermediate brightness in the habitat to make them invisible to predators

3 0
3 years ago
What happens during cellular respiration
Vera_Pavlovna [14]

Answer:

in cellular respiration food is oxidized to CO2 while O2 is reduced into H2O Cellular respiration takes in food and uses it to create ATP, a chemical which the cell uses for energy. Usually, this process uses oxygen, and is called aerobic respiration.Aerobic respiration, the process that does use oxygen, produces much more energy and doesn’t produce lactic acid. It also produces carbon dioxide as a waste product, which then enters the circulatory system

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3 years ago
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