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
Kay [80]
3 years ago
5

What is meant by the following statement about the cell membrane?

Biology
2 answers:
AysviL [449]3 years ago
6 0

Answer:

The cell membrane is semipermeable because allows only certain molecules to pass through.

Explanation:

Semipermeability is a common property of cell membranes, due to their predominantly lipid composition, which gives them a hydrophobic character.

The cytoplasmic membrane is constituted by a double layer of lipids, in addition to structural proteins and glucides, which prevent the entry of polar or charged molecules. This characteristic allows lipids and small molecules without charge to pass freely through it.

Regarding the other options:

<em>     A. Cell membranes are associated with lysosomes, structures that contain enzymes. However, this characteristic is not related to semipermeability.</em>

<em>     C. They allow the passage of small molecules - devoid of charge - through them.</em>

<em>     D. Not all non-polar molecules pass through, as some need a transporter.</em>

DedPeter [7]3 years ago
6 0

Answer: B it only allows certain molecules to pass through

Explanation: permeability is the ability to let molecules pass through, and semipermeable only allow certain molecules through.

You might be interested in
Tall height is dominant to short height in pea plants. You have a tall pea plant that you cross with a short pea plant. What is
zheka24 [161]

Answer:

The tall parent was heterozygous

Explanation:

If tall height is dominant to short height the only genotype possible for short height is hh, while there are two possible genotypes for tall height, Hh and HH. When HH is crossed with hh all the offspring are Hh, but if Hh is crossed with hh, a quarter of the offspring is HH, a quarter is hh and half is Hh. If the tall pea plants were HH there would only be tall offspring, but because there are some short offspring we know that the tall pea plants must have a genotype of Hh.  

5 0
3 years ago
Instructions:Select all the correct answers. Giraffes with short necks lived in arid regions. Over time, grasses disappeared, fo
Nataly_w [17]
Being born with the genes, and evolving to reach food easier

Maybe, IDK Tbh XD
5 0
3 years ago
Which structure most resembles the human nervous system
enot [183]
Plants,because in a plant there are little roots just like capillaries in a humans body which push water and nutrients like how our capillaries push blood through our veins which pushes it up through the rest of the plant just like how our veins and capillaries push blood through or body .
5 0
3 years ago
What's the role of enzymes in seed germination?
sveta [45]
They help with storing "food" in fruits and foods to make them edible for us people.
4 0
3 years ago
Which of the following rocks would most likely be formed from an erupting volcano
serg [7]
Igneous rocks are formed when the magma from an erupting volcano eventually cools this  rock is extrusive- found on the earth's surface.
6 0
3 years ago
Other questions:
  • A researcher who studies neurodegenerative diseases has found that dying neurons contains a high concentration of miss-folded pr
    7·1 answer
  • ___________ may be the cause of impulsive aggression, which can be treated with _________.
    11·1 answer
  • Which structure would be unaffected by the peripheral nervous system
    7·1 answer
  • Humans cut down trees in a location. This caused an increase in temperature and decrease in rainfall in that location. Which of
    10·2 answers
  • Which of the following organisms do not have cell walls
    6·2 answers
  • How many copies of the 1st chromosome does a human haploid cell contain
    15·1 answer
  • How big is the earth
    8·1 answer
  • What factors are required for population growth?
    6·1 answer
  • According to the passage, who kicks the winning goal in the championship soccer game?
    9·1 answer
  • PLANT CELL labeling
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!