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Artyom0805 [142]
3 years ago
5

Explain why the lower respiratory tract is essentially sterile.

Biology
1 answer:
Gemiola [76]3 years ago
7 0

Answer:

The lower respiratory tract is essentially sterile because epithelium lining is the respiratory tract that covers the bottom respiratory tract sterile. It basically prevented the mucus accumulation in lungs. The macrophages is the immune system part that can digest or inhaled any harmful substances.

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Cell X has a resting potential of -80mV. If a ___________ open and causes the potential to change 10mV, the resulting potential
Dovator [93]

K+ channel opens, resulting potential -90mV

This is due to hyperpolarization.

<h3>What is hyperpolarization?</h3>
  • Hyperpolarization is a change in a cell's membrane potential that makes it more negative (i.e. decreases).
  • It results in increase in the potential difference across the membrane.
  • K+ moves from the inside to outside as some potassium channels remain open and sodium channels reset. A period of increased potassium permeability results in excessive potassium efflux before the potassium channels close.
  • K+ channels typically cause membrane potential to become more negative.

Learn about depolarization here:

brainly.com/question/14692094

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4 0
2 years ago
A new monkey species has developed. This species climbs trees and has opposable thumbs but does not have a prehensile tail. Whic
svetoff [14.1K]

Answer:

B. Old world monkeys

Explanation:

The Old World monkeys (including baboons) inhabit Africa and Asia, and are more closely related to apes. They are generally larger than New World monkeys, have more elongated faces, and have a tail that is not "prehensile".

8 0
3 years ago
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What will a heterozygote show when two alleles are codominant?
Y_Kistochka [10]
Both phenotypes will be shown.
5 0
3 years ago
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PLZ HELP!!!!! I WILL GIVE BRAINLIEST!!!!!!!!!!!
aleksley [76]

Answer:

The respiratory system and the circulatory.

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The respiratory system brings in the oxygen and the circulatory system brings all of the oxygen through out the body.

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What are some questions that scientist have about Saturn that they have no answer to?
S_A_V [24]
1.What colors are Saturn's rings?
2.Why does Saturn have rings?
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