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
Zina [86]
3 years ago
15

The only structures that allow gas diffusion across them are the _____.

Biology
1 answer:
Fed [463]3 years ago
8 0
The answer is alveoli, there the only structures.

Hope this helps! Have a BLESSED day! :-)
You might be interested in
What color of visible light has the least percentage of absorption by chlorophyll A?
solmaris [256]
As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green
6 0
3 years ago
Laboratory Re
oksian1 [2.3K]

1. Number of chromosomes in the parent cell is 46

2. Number of chromatids in daughter cells formed by first division is 46

3. Number of chromosomes in daughter cells formed by first division is 23

4. Number of chromosomes in daughter cells of second division 23

5. Number of haploid cells formed by meiotic division of parent cell is 4

4 0
3 years ago
Which organ of the body produces the fluid know as bile?
lord [1]

Answer:

A-Liver

Explanation:

8 0
3 years ago
Read 2 more answers
___________ is a measure of the degree to which the phenotypic variation of a given trait is due to genetic factors.
nataly862011 [7]
The answer should be heritability.
7 0
3 years ago
An unknown chemical is analyzed and found to contain the bases thymine and guanine. This chemical is most likely tRNA. mRNA. DNA
Verdich [7]

Answer:

DNA

Explanation:

Thymine is one of the four nucleobases that pairs with adenine to make up DNA, also called 5-methyluracil. It is replaced by uracil to make RNA molecules during transcription.

Theferore the unknown chemical analyzed was DNA because thymine is found in DNA and not in RNA molecules.

7 0
3 years ago
Other questions:
  • #9 What is a solvent?
    15·2 answers
  • Could ash be harmful to an environment?
    6·2 answers
  • How does producing plastics benefit the economy?
    15·2 answers
  • A biologist studying a desert ecosystem observes that the population of a lizard species increases following particularly hot, d
    11·1 answer
  • 3. The number of annual rings in trees growing in temperate climates corresponds to the age of the trees. Scientists use tree ri
    12·1 answer
  • Explain how cells in your body benefit from having different systems work together
    14·2 answers
  • Plzzzzzzzzzzzzzzzzzzzzzzzzzzz help i only need help with B everything eles i can do my self
    12·1 answer
  • Water availability impacts plant growth and animals who depend on plants for food are interactions between the
    9·1 answer
  • PLEASE HELP!!!!!!
    12·1 answer
  • Each different section of the chromosome represents a _____<br><br> *wasnt given any answers
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!