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
s2008m [1.1K]
3 years ago
12

Which class of molecules can directly cross the cell membrane without the aid of transport proteins? Choose one: A. Ions B. Suga

rs C. Uncharged gasses D. Amino acids
Biology
1 answer:
yulyashka [42]3 years ago
6 0
Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane. Carbon dioxide, the byproduct of cell respiration, is small enough to readily diffuse out of a cell. Small uncharged lipid molecules can pass through the lipid innards of the membrane.
You might be interested in
Organisms typically have only one copy of each allele. true false
lawyer [7]
It's going to be true 
3 0
3 years ago
Read 2 more answers
Which important phenomena occur in plant leaves and help water transportation in xylem tissues?
algol13
The answer is C. The phenomena occur in plant leaves and help water transportation in xylem tissues is photosynthesis and transpiration.  A balance between these two phenomena is important to maintain balance in the plant's life.
8 0
3 years ago
Identify the longitudinal section of a long bone and interior bone structure.
Savatey [412]
The long bones are those that are longer than they are wide.
They are one of five types of bones long, short, flat, irregular and sesamoid.
4 0
3 years ago
Since Finding Nemo came out in theaters, there has been an increased demand for pet clownfish. Now marine biologists are noticin
just olya [345]

Answer:

there are plenty of things we can do to help build up the sea anemone population, but a few ways would be to either A) mate clownfish to reproduce, B) inform people the issue they're causing, or C) to ban clownfish buying/selling at stores.

pick whichever topic you like best!

8 0
3 years ago
Question 6
slavikrds [6]

Answer:

i really really need the brainly points

Explanation:s

sry for the answer

4 0
3 years ago
Other questions:
  • Which best describes the biological species concept?
    6·1 answer
  • When a parent cell makes several nuclei and divides to make several daughter cells, it is called _____.
    9·2 answers
  • Can the work output of an engine be greater than the source of energy? A. yes, sometimes B. yes, always C. no, sometimes D. no,
    11·1 answer
  • Which of the following practices can help control erosion?
    10·1 answer
  • A straight line of energy flows is a food web or a food chain?
    11·1 answer
  • A theory of evolution that states that a species evolves in spurts of rapid change and then goes through periods of no change is
    7·2 answers
  • The color of a daisy’s petals is a(n) ________, the instructions for which are found in a gene controlling petal color. There ma
    13·1 answer
  • Are cells an evolution​
    7·1 answer
  • How would the following table be most helpful? How would the following table be most helpful? *
    14·2 answers
  • Name BREAKING IT ALL DOWN. LITERALLY! ATP C.C vou Simple context statement: In order for cells (plant or animal) to create ATP e
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!