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
docker41 [41]
4 years ago
7

Which statement best describes how the structure of the alveoli allows the lungs to function properly

Biology
1 answer:
zlopas [31]4 years ago
8 0

Out of the following given choices;

a. they increase the amount of energy transferred from the lungs to the blood

b. they increase the flexibility of the lungs as they expand during inhalation

c. they increase the volume of the lungs, allowing more oxygen to be inhaled

d. they increase the surface area of the lungs, allowing the efficient gas exchange

The answer is D. Due to their microscopic nature, they are numerous in the lungs and are also circular-shaped so as to increase the surface area for gaseous exchange. Other characteristics of alveoli that increase gas exchange are that they thinned-walled (with only a layer of cells) and moist.






You might be interested in
Where would you expect to find genetic material in a prokaryotic cell?
Alexxx [7]

Answer:

The answer is Option B the nucleus

Explanation:

Genetic information in prokaryotic cells is carried on a single circular piece of DNA which is attached to the cell membrane and in direct contact with the cytoplasm. There is no enclosing membrane, so there is no true nucleus, but simply a concentration of DNA known as a nucleoid.

and DNA is present in the nucleus. Therefore option B is correct

hope this helped you

please mark as the brainliest (ㆁωㆁ)

7 0
4 years ago
Explain the differences between normal air circulation and how the air behaves when a temperature inversion occurs.
Varvara68 [4.7K]

Temperature inversion or thermal inversion is a phenomenon during which the temperature increase when there is an increase in the altitude. It is an uncommon process that happens in the troposphere-the layer of atmosphere closest to the earth.    

When there is an increase in temperature with altitude, that warm air acts as a blockage for the cool air near the surface of the earth. So this is just opposite to the normal behavior of the air, where it becomes cooler with an increase in altitude.

So how air circulation behaves during inversion?

So as we said that the cool air nearer to the earth will be blocked by a layer of warm air. This blockage will hinder the circulation of air upwards from the lower layers. Let’s see how:

• As we know that, warm air is less dense and more buyout than cool air and normally less dense warm air is close to the earth and cool air is in above layers. But when the process is reversed, this warm air acts like a blanket for the proper circulation of air. Due to this, many environmental pollutants which normally leave the earth during air circulation get trapped in our air.  

• The trapped environmental pollutants like nitrogen oxides and hydrocarbons get convert into harmful ozone that ultimately deteriorates the quality of air and causes problems like smog.

• The improper air circulation also causes suspension of the harmful gases near the earth instead of allowing them to leave the earth atmosphere. This ultimately causes air pollution.  

• When smoke will not rise, carbon dioxide will be build up in the atmosphere; this will cause greenhouse effect and global warming.

Therefore, air circulation behaves very different during temperature inversion process and poses hazardous effects on global climate.

Hope it helps! :)

6 0
4 years ago
Some Hibernating animals don't eat during hibernation and come out of hibernation with much less fat than when they started. The
Serga [27]
<h2>Hibernation</h2>

Explanation:

C) the animal convert their stored fat molecules into ATP molecules; since ATP is highly unstable its uncoupled hydrolysis generates internal heat .

Hibernation can be referred as winter sleep. It is a process followed by animals to escape cold temperatures during winter. Most of the hibernating animals store fat in their body and have  greater body mass. During this hibernation period their body breaks down the stored fat to release heat and keep the animal warm.

7 0
4 years ago
Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?
Fittoniya [83]

Answer:

Star 1 is hotter and brighter than Star 2

4 0
3 years ago
Read 2 more answers
Match the vocabulary to its definition
vodka [1.7K]

Answer: Read below

Explanation:

1 A

2 B

3 C

5 D

4 E

7 0
3 years ago
Read 2 more answers
Other questions:
  • Lily visits her family doctor. He tells her that the upset stomach she experiences after drinking milk is caused by too little l
    6·1 answer
  • What is a major source of calcium and sodium in oceans?
    7·2 answers
  • Why are the oldest fossils found in the oldest rock layers?
    11·2 answers
  • If one strand of DNA has the following sequence: CGGCTAATCGCC, what would the sequence of the complimentary strand be?
    12·1 answer
  • A smaller animal is more likely to be a(n) a. insectivore than a frugivore, because it cannot outcompete larger animals. b. frug
    12·1 answer
  • _____remains in the nucleus while ______is found in both the cytoplasm and nucleus.
    13·1 answer
  • This element is a gas, can only form one bond, and is found in compounds like
    7·1 answer
  • Which of the following is a true statement about the stratosphere?
    11·2 answers
  • Hurricanes ,How are they formed? Causes
    10·1 answer
  • Helppppppppppp heeeelllpppppp​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!