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
leva [86]
3 years ago
8

I’m not sure what it means for the cell membrane to be semi-permeable

Biology
1 answer:
Lesechka [4]3 years ago
8 0

Answer:

It means that the cell membrane allows certain substances to pass through and not others. As the cell membrane consists of a phospholipid bilayer with a hydrophobic core, only small uncharged hydrophobic molecules can pass through the cell membrane e.g. glucocorticoid and other larger charged particles require transporters or channel proteins to pass through the cell membrane, e.g. glucose.

You might be interested in
Arachidonic acid (ARA) and docosahexaenoic acid (DHA) are two long-chain fatty acids necessary for the development of Multiple C
lana [24]

Answer:

The correct answer is: the nervous system, brain, and eyes.

Explanation:

Arachidonic acid (ARA) and docosahexaenoic acid (DHA) are long-chain polyunsaturated fatty acids that have great nutritional value, as they are omega-6 and omega-3 fatty acids, respectively, meaning they are essential fats that cannot be produced by the body and, therefore, need to be part of the diet.

The consumption of ARA and DHA has been directly linked to the development of the brain and the retina, and the inclusion of these fatty acids in the nutrition of infants has been proven to be extremely beneficial to their growth.

Besides their functions in the development of the nervous system and the eyes, ARA and DHA play a role in maintaining a healthy immune system and preventing cardiovascular conditions.

7 0
3 years ago
What are some human behaviors that can cause harm to ecosystems or a specific species? other than the obvious cutting down trees
Nookie1986 [14]
Littering, hunting specific endangered species, honestly there are tons of things so the easiest one would be littering because if animals eat certain things it can kill them.
6 0
4 years ago
Read 2 more answers
Leukopenia is a condition characterized by a decrease in white blood cells. What effect does leukopenia have on the body's abili
Korolek [52]

Leukopenia means  a low count of white blood  cells in the body. When there is a low white blood cell count in the body, and in particular a low level of neutrophils (a kind of white blood cell that fights infection), there is quite a significant risk of developing an infection, and once an infection is developed and the white blood cell count is low, the body will not be able to protect itself and fight off the infection. In severe cases , infection may lead to death.


6 0
4 years ago
Read 2 more answers
A fault is found that cuts through lower rock layers but not those above What can most likely be concluded
Ierofanga [76]

Answer:

A fault is found that cuts through lower rock layers but not those above it. What can most likely be concluded? The fault is the same age as the layers it cuts through, and the same age as the layers above it.

Explanation:

3 0
3 years ago
The spread of roots around a plant is usually greater than the depth of the roots.
valina [46]
The spread of roots around a plant is usually greater than the depth of the roots is a completely false statement. It totally depends on the type of plant in regards to the type of root it will have. Normally there are two kinds of roots and they are taproot and fibrous roots. In case of taproots the main root goes downwards and smaller roots branches out of it. In case of taproots, it is true that the spread of roots is smaller than the depth of the roots. In case of fibrous roots, the spread of roots is greater than that of the depth of the roots. A wig tree is an example of a plant having taproot. in the wig tree the root can go to a depth of around 120 meters.
6 0
4 years ago
Read 2 more answers
Other questions:
  • How do you call an organisms position in a food chain, which is determined by its feeding relationships?
    14·1 answer
  • Definition of condensation
    5·1 answer
  • As air pollution continues to be released into the atmosphere, what becomes more depleted, resulting in an increase of ultraviol
    15·2 answers
  • How does the skeletal system of an embryo differ from that of an adult?
    14·1 answer
  • What would happen if a major predator was removed from the food web?
    8·1 answer
  • In active transport, molecules move from areas of _______ concentration to areas of ______ concentration and require _______.
    8·1 answer
  • Em um borboletário estão presentes duas amostras de ar isolados do ambiente, mas sem nenhuma identificação. sabe-se que uma é de
    15·1 answer
  • Do you label a container before or after putting a substance in the container?
    15·2 answers
  • 1.______ from the sun is transferred to_____ surface. some of that energy is then _____
    5·1 answer
  • If there is 135,000 joules of energy at the producer level there is Joules of energy at the primary consumer level
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!