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
olga_2 [115]
3 years ago
5

When a person breathes, the nose and mouth take in oxygen-rich air, and they expel oxygen-poor air. Which statement explains the

change in
oxygen concentration of the inspired air?
A The oxygen concentration decreases gradually as it passes through all organs of the respiratory system,
CB. The oxygen concentration decreases gradually as it passes through all the airways of the lungs,
OC. The oxygen concentration decreases quickly in the nose and mouth, and then remains constant as it passes through other organs of
the respiratory system,
CD. The oxygen concentration decreases only when the air reaches the alveoli, which are the terminal branches of the respiratory system,
Biology
1 answer:
kkurt [141]3 years ago
7 0

Answer:

the oxygen concentration decreases only when the air reaches the alveoli, which are the terminal branches of the respiratory system

Explanation:

The human respiratory system is responsible for taking in oxygen-rich air, and they expelling oxygen-poor air. The respiratory system consists of lungs, which helps in the exchange of gases: Oxygen and carbon dioxide.

The statement ''the oxygen concentration decreases only when the air reaches the alveoli, which are the terminal branches of the respiratory system'' explains the change in oxygen concentration of the inspired air

You might be interested in
For a lab assignment, you are presented with a fungus and are asked to observe and draw conclusions about its reproductive cycle
vlada-n [284]
According to the observation, I would conclude that the fungus has asexual form of reproduction.  This is because asexual spores germinate and produce new hyphae anytime and anywhere as long as the conditions are favorable. Sexual pores on the other hand need a time of dormancy after the are formed before they produce more hyphae.
4 0
3 years ago
Read 2 more answers
A mistake in DNA replication, in which the wrong base is placed in the growing DNA strand, can have profound effects on the desc
Klio2033 [76]

Answer:

DNA replication is the process in which the DNA is copied and it occurs during synthesis phase of the eukaryotic cell cycle. It begins with an enzyme breaking the bonds between complementary bases in DNA which exposes the bases inside  the molecules so they can be read by another enzyme and used to build two new DNA strands with complementary bases.

Explanation:

The original strand is: TAGCGTT

                                      ATCGCAA

The Mutated strand is: TGGCGTT

                                       ATCGCAA

<em>The replicated strand is: GAATCAC</em>

<em>                                           CTTAGTG</em>

5 0
3 years ago
The endosymbiotic theory proposes that eukaryotic cells arose as a result of large cells engulfing smaller, aerobic bacteria. th
lina2011 [118]

The organelle that provides evidence for this theory is the mitochondria and the chloroplast.

<h3>What is the endosymbiotic theory?</h3>

The endosymbiotic theory is the theory which describes how the eukaryotic cells arose from simple prokaryotic cells.

In the endosymbiotic theory states that when two prokaryotic cells with several abilities came together, one engulfed the other and existed in a symbiotic relationship that enabled  the cells to meet their needs for survival an growth.

The mitochondria and the chloroplast provides evidence for the endosymbiotic theory.

In conclusion the endosymbiotic theory describes  how eukaryotic cells arose from simple prokaryotic cells.

Learn more about endosymbiotic theory at: brainly.com/question/1698852

#SPJ1

8 0
1 year ago
In the right atrium, the auricle and anterior wall exhibit obvious muscular ridges called
san4es73 [151]
<span>In the right atrium, the auricle and anterior wall exhibit obvious muscular ridges called MUSCULI PECTINATI.

Musculi pectinati or pectinate muscles are identified as specialized intracardiac muscle. The muscular ridges are like combs. These ridges help the right atrium dilate without much walls stress during adverse loading conditions.</span>
6 0
3 years ago
What are two ways that organisms are connected to the nonliving. environment
galben [10]
Because the organisms consume the departed
4 0
3 years ago
Other questions:
  • Which of the following statements about Ngb-H64Q is true?
    6·1 answer
  • Relaxation exercises, recommended for stress management, produce a very relaxed, though still awake state, characterized by ____
    13·1 answer
  • In the process of clear cutting, only mature trees are removed from an area.
    14·1 answer
  • Which is emergent property is not correctly matched with the level of organization: organism: personality ecosystem: nutrient cy
    13·1 answer
  • Individuals with an active infection from a multidrug-resistant organism require:
    11·1 answer
  • The innermost part of a grain that is rich in protein, oils, vitamins, and minerals is known as the
    8·2 answers
  • What is the function of tRNA?
    11·1 answer
  • Pulled upwards in the trunk of a tall tree Ichestue
    14·1 answer
  • Which of the following describes movement of molecules into a cell through active transport?
    11·1 answer
  • What is april?? co.me he.re qvuutrksra​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!