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
vfiekz [6]
3 years ago
7

Which of the following factors does not affect membrane permeability?A) The polarity of membrane phospholipids.B) Temperature.C)

The amount of cholesterol in the membrane.D) The saturation of hydrocarbon tails in membrane phospholipids.
Biology
1 answer:
lapo4ka [179]3 years ago
3 0

The correct answer is: A) The polarity of membrane phospholipids

Factors that affect membrane permeability are

1. Chemicals :

Some of the organic solvents such as chloroform and ethanol can dissolve the membrane and thus, destroy the selective permeability of the membrane.

2. Temperature :

Too high temperatures denature the protein that are in the structure of the membrane destroying its selective permeability. On the other hand, too low temperature slows down molecule movements and the permeability decreases.

3. Cholesterol:

Increases the permeability by reducing the barrier formed by phospholipids’ heads

4. The saturation of hydrocarbon tails in membrane phospholipids:

Saturated fatty acids decrease permeability of the membrane because  they get very close together, which makes it harder for the molecules to pass through.

You might be interested in
Question 17 of 30
Alex Ar [27]

Answer:

Iron usually forms an

Induced magnet

7 0
3 years ago
What is the likely motivation for a person giving up soup after an extended illness? Values Habit Social interactions Positive a
makkiz [27]

Answer:

The correct answer is: Positive Associations.

Explanation:

  • Due to prolonged illness the person has lost all desire to survive.
  • This is the reason why he stopped consuming food.
  • Under such a situation, it is necessary that the person should be exposed to people who can positively counsel the person and make the ill person realise the importance of life.
  • It is necessary to make the person realise what he would gain if he chooses to survive and what he would lose if he chooses to die.
  • It is necessary to remind the person of all the possible goals he could achieve in his life if he chooses to survive.
7 0
3 years ago
Sort the items based on whether they have gravitational potential energy or chemical potential energy. liquid petroleum gasoline
poizon [28]

Explanation:

Gravitational potential energy is the energy of body due to its position in the gravitational field.

Whereas chemical potential energy is the energy within the chemical bonds of a substance.

For example, when we eat an apple then we get energy in our body so, it is the chemical potential energy stored in the apple.

Items sorted on the bases of gravitational potential energy and chemical potential energy are as follows.

Gravitational potential energy:

  • a ball thrown up in the air.
  • a stone rolling downhill.
  • water stored in an overhead tank.

Chemical potential energy:

  • liquid petroleum gasoline used in cars.
  • apples that people eat.
  • firecrackers that people set off.
4 0
3 years ago
A racecar driver circles a racetrack with a constant speed of 110 km/hr.
Nitella [24]
<span>B) The speed is constant and velocity is changing. </span>
7 0
3 years ago
Read 2 more answers
If the rate of photosynthesis significantly increased, which of the following would happen?
Alex Ar [27]
The total amount of oxygen in the ecosystem,light available, and sugar molecules would decrease.
4 0
3 years ago
Other questions:
  • Some fish have bony fins. if the body of water they are in dries out, these fins can be used to help the fish "walk" to another
    12·1 answer
  • Ome bacteria in the deep oceans use iron as an energy source to make carbohydrates from carbon dioxide. these bacteria would be
    7·1 answer
  • How does the circulatory system interact with the digestive system
    13·2 answers
  • Which statement correctly matches a cell part with its function?
    13·2 answers
  • In the image is the blood hypertonic, isotonic, or hypotonic compared
    15·1 answer
  • Where on the track is the most potential energy?
    15·2 answers
  • What is the backbone of DNA composed of (choose all that apply)
    14·2 answers
  • The terrestrial plants have well developed roots.Give reason.<br>​
    15·1 answer
  • Use the map to answer the following question:
    10·1 answer
  • Why are behavioral responses to stimuli considered to be adaptive
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!