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Mice21 [21]
4 years ago
10

A group of nursing students are reviewing information about variations in the anatomy of a child's respiratory tract structures

in comparison to adults. The students demonstrate an understanding of the information when they describe the shape of the larynx in infants as:
a) funnel.
b) oval.
c) spherical.
d) cylindrical
Biology
1 answer:
gladu [14]4 years ago
4 0
The answer would be A. funnel
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For a given population, consider a gene locus in HWE with two alleles labeled O and U. If the U allele occurs in the population
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Answer:

The correct answer is D the frequency of O allele is 0.66

Explanation:

The correct answer is D because

A the heterozygote frequency is 0.55.

C the UU genotype frequency is 0.44.

D  O allele frequency is 0.66.

E  All genotype frequency sums up to 1.

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Fill in the blanks... Plants produce ______ and _______ as a result of photosynthesis.
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Plants produce oxygen and glucose as a result of photosynthesis
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You have isolated a strain of temperature-sensitive mutant yeast that divides normally at 25°C. However, at 37°C, the mutant pau
sp2606 [1]

Answer:

Explanation:

A. Inactivation of an enzyme that degrades M-Cyclin.

         M-phase cyclins form M-CDK complexes and drive the cell's entry into mitosis from G2 phase as non-degradation of M-Cyclin resulting from inactivated enzyme can only result in constitutive entry of the cell in to M phase instead cell cycle being arrested at G2 phase,

         

B. Inactivation of the Wee-1 kinase.

         Wee1 is a nuclear kinase that plays a key role in regulating cell cycle progression. Wee1 inhibits the entry of the cell into M phase by inhibiting Cdk1. Wee1 phosphorylates Cdk1 there inhibiting the kinase activity of Cdk1 which is essential for progression from G2 to M phase. As such any mutation of wee1, and the resulting loss of activity will result in premature entry of cells into M phase instead of getting arrested at the G2 phase resulting in smaller yeast cell.

C. Inactivation of the Cdc25 phosphatase

               CDC25 phosphatases removes inhibitory phosphate residues from cyclin dependent kinases resulting in the activation of CDKs which causes the cells in G2 phase to entry to M phase. Mutation in CDC25 phosphates removes the ability of CDC25 to remove phosphate residues from CDKs thus preventing the entry into M-phase.

Therefore, mutant phenotype of cell cycle arrest prior to M phase can only result form mutation in

Cdc25 phosphatase(option 3)

6 0
4 years ago
Answer it correctly please
sweet-ann [11.9K]
The first. One will be Guard cell
3 0
3 years ago
Place the respiratory structures below in the order that air would pass through them as it moves from the outside to the inside
Marizza181 [45]

The respiratory structures in order that air moves from outside to inside include primary bronchus--> secondary bronchus--> Tertiary bronchus--> terminal bronchioles--> respiratory bronchioles--> alveolar duct--> alveolar sacs--> alveoli.

<h3>What is respiratory system?</h3>

The respiratory system is one of the major systems of the body that helps in the oxygenation of the blood which is used by the body cells for oxidation.

Respiration occurs as we breath in air or oxygen and breath out carbon dioxide as used air from the body.

The correct flow of this air from outside to the inside of the body through the following order:

The primary bronchus: This is the first division of from the trachea at the carina forming two bronchi which leads to the left and right lungs.

The secondary bronchus: This divides form the primary bronchus.

The tertiary bronchus: This divides from the secondary bronchus to to supply each segment of the lungs.

The terminal bronchioles: This divides from the tertiary bronchus

The respiratory bronchioles: This divides for the terminal bronchioles.

The alveolar duct, alveolar sacs and alveoli is the main area that oxygen is exchanged with the blood.

primary bronchus--> secondary bronchus--> Tertiary bronchus--> terminal bronchioles--> respiratory bronchioles--> alveolar duct--> alveolar sacs--> alveoli.

Learn more about respiration here:

brainly.com/question/14158795

#SPJ1

5 0
2 years ago
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