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
stich3 [128]
3 years ago
13

How can a membrane be permeable to one substance while being impermeable to another substance?

Biology
1 answer:
statuscvo [17]3 years ago
5 0

Answer:

It varies due to their polarities.

Explanation:

Remember, a membrane is a semi-permeable membrane. There are some substances that can cross the membrane and others have to take different route. It all comes down to their polarity. If we were to examine a membrane made of phospholipid bilayers, one side of it has hydrophilic heads and the inside has hydrophobic tails. The membrane is therefore polar, allowing polar substances to enter in and out of the cell. Non polar substances, such as water have to take a different route, through special proteins called aquaporins.

You might be interested in
Elbow restraints are prescribed for an 18-month-old toddler who just had surgery for a cleft palate. the nurse explains to the p
Mamont248 [21]
The restraints are used to keep the child from damaging the operative area. Elbow restraints are usually used post operatively in infants in order to protect the surgical area from damage. The restraint will limit the baby's movement and prevent him from accessing the area of the body that was operated.
6 0
3 years ago
Choose the best explanation of the difference between evolution and natural selection. A. Natural selection is the idea that spe
katen-ka-za [31]

Answer:

Evolution is not the same as adaptation or natural selection. Natural selection is a mechanism, or cause, of evolution. Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations.

3 0
3 years ago
What do horseshoe crabs and spiders have in common?
valina [46]
The answer is A :)

both horseshoe crabs and spiders produce silk
3 0
3 years ago
Read 2 more answers
Which energy pyramid cannot be inverted? a. pyramid of numbers b. pyramid of biomass c. pyramid of energy d.all can be inverted
Blababa [14]

The correct option is C.

The pyramid of numbers and the pyramid of biomass can be inverted but the pyramid of energy can not be treated in the same way. The pyramid of energy is a graphical representation of the flow of energy in the ecosystem. The ultimate source of energy in the ecosystem is the sun. The plants, which are called the producers use the energy of the sun to produce their own foods. It is the energy that the primary consumers obtained from the producers that will be pass on to others in the ecosystem. Thus, the value of the energy reduce gradually as it is passed from one level to another.

6 0
3 years ago
Read 2 more answers
We can use the periodic table to determine which atoms are most likely to lose or gain electrons during the formation of an ioni
Ira Lisetskai [31]
Hey there!

We CAN use the periodic table to determine which atoms are most likely to lose or gain electrons during the formation of an ionic bond
True

Hope this helps!

~~Cutelion918~~
3 0
4 years ago
Read 2 more answers
Other questions:
  • This is annoying and it is due tomorrow and I didn’t know we needed our book
    5·1 answer
  • Which finding by the nurse is consistent with an infant born at 39 weeks gestation?
    5·1 answer
  • Which of the following statements best explains the impact deforestation has had on the water cycle
    5·2 answers
  • 10. The magnetic force depends on ___ between a magnet and a magnetic object.
    10·1 answer
  • What conditions on Earth enable life to exist?
    12·1 answer
  • Why do different cells within an individual organism function differently?
    10·1 answer
  • O que é teoria panspermia?​
    9·1 answer
  • The cell membrane acts as a protective ___________ to the i contó flow of water into and out the cell.
    13·2 answers
  • The result of a laboratory experiment
    13·1 answer
  • Compare the processes by which a car and a human use "fuel" to perform work. What are the similarities?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!