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
Elenna [48]
3 years ago
13

Gas exchange of CO2 for oxygen occurs between capillaries and what structure in the lungs? A. Veins B. Alveoli C. Bronchioles D.

Cilia
Biology
2 answers:
Iteru [2.4K]3 years ago
7 0

<u>ANSWER:</u>

The correct option is B: Alveoli. Gas exchange of "carbon dioxide and oxygen" takes place in the "alveoli" of the lungs.

<u>EXPLANATION:</u>

  • Alveoli are present in the alveolar sacs located at the end of respiratory bronchioles. Alveoli have thin walls and look like bubbles in the sacs.
  • These also are in "direct contact" with the blood capillaries. This contact ensures that "oxygen" is released into the blood capillaries by the alveoli directly.  
Talja [164]3 years ago
6 0

Answer:

B: Alveoli.

Explanation:

You might be interested in
A cell with 80 chromosomes undergoes meiosis. How many chromosomes are found in the daughter cells? How many daughter cells are
qwelly [4]

Answer:

Four daughter cells are produced each with 40 chromosomes. The daughter cells would exhibit genetic variations and would not be genetically identical to each other.

Explanation:

Meiosis is a cell division that forms four daughter cells from one parent cell as two sequential division meiosis I and meiosis II do not include any DNA replication between them. Crossing over during prophase-I of meiosis-I includes the exchange of genetic segments and occurs between the homologous chromosomes. It produces new gene combinations in the daughter cells which were otherwise not present in the parent cell.

Since there is no DNA replication between meiosis I and meiosis II, the daughter cells have half the number of the chromosomes compared to the parent cell. This occurs as homologous chromosomes move towards the opposite pole during anaphase I.

Therefore, a parent cell with 80 chromosomes will make a total of 4 daughter cells by meiosis. Each daughter cell would have 40 chromosomes. These daughter cells would have some new gene combinations and would be genetically dissimilar among themselves.  

5 0
3 years ago
Skin has epithelial cells that resist stretching and twisting because they are held together by what
KatRina [158]

The epithelial cells resist stretching and twisting in the skin because if desmosomes that holds them together. The desmosomes are the one responsible for the cell to cell adhesions, making them be tight or held together as this is its structure.

7 0
3 years ago
Divide 250g in the ratio 5:3:4 ​
Rama09 [41]

Answer:

let the three parts be

5x + 3x + 4x = 250

so on adding

12x = 250

x = 20

so it will be divided into three parts as

5 × 20 = 100

3×20= 60

4×20 = 80

Explanation:

7 0
3 years ago
What instrument is used to measure the average kinetic energy in a substance? calorimeter thermometer spectroscope voltmeter?​
s344n2d4d5 [400]

Answer:

The instrument used to measure the average kinetic energy of particles in a substance is thermometer. A measure of the average kinetic energy of particles in a substance is temperature

Explanation:

8 0
3 years ago
List all the subsets of each set.<br><br> {dog, cat, fish}
Burka [1]
Subsets of {dog, cat, fish} are Ф, {dog}, {cat}, {fish}, {dog, cat}, {dog, fish}, {cat, fish}, {dog, cat, fish}.
7 0
3 years ago
Read 2 more answers
Other questions:
  • How many valence shell electrons does the element carbon have
    6·1 answer
  • Why have erosion and deposition increased in both of the prairie ecosystems
    10·1 answer
  • Explain how your dna compare for your traits
    14·1 answer
  • Which of the following is not a function of fat in the human body? carries the water-soluble vitamins provides long-term energy
    8·1 answer
  • Help me plz NOW Which two explanations are based on personal beliefs?
    6·1 answer
  • Amanda is doing a report for her Earth Science class about the four seasons. Which of the following would be an effective scient
    11·2 answers
  • The photos below show specialized cells of a plant.
    8·1 answer
  • An abnormality in an individual's DNA is called a (n)
    11·2 answers
  • Where did all living things come from? How did Reid’s experiment help to demonstrate this?
    14·1 answer
  • Would needed to target a cytosolic protein (fully translated) to the exoplasmic face of the plasma membrane?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!