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
rusak2 [61]
3 years ago
7

Which statements accurately reflect the permeability of the cell membrane? Choose all that apply. The hydrophilic part of the ce

ll membrane is A, the phosphate head. The lipid tails are hydrophobic and will only allow molecules which are small and polar to pass through. Molecules that are large or charged must use a channel protein, such as D, to cross the cell membrane. Molecules using membrane proteins, such as E, for transport require energy. Charged molecules, such as K+ or Ca++ are unable to pass through the lipid bilayer because of their charge and must use a membrane protein to cross the cell membrane. C, the lipid tails, are hydrophobic and repel water.
Biology
1 answer:
Nostrana [21]3 years ago
6 0

Explanation:

  • The hydrophilic part of the cell membrane is A, the phosphate head.
  • Molecules that are large or charged must use a channel protein, such as D, to cross the cell membrane.
  • Molecules using membrane proteins, such as E, for transport require energy.
  • Charged molecules, such as K+ or Ca++ are unable to pass through the lipid bilayer because of their charge and must use a membrane protein to cross the cell membrane. C, the lipid tails, are hydrophobic and repel water.

Further Explanation:

Arranged in a phospholipid bilayer, the cell membrane is semi-permeable; allowing entry into the extracellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds. The hydrophilic heads of the bilayer are attracted to water while their water-repellent hydrophobic tails face towards each other- allowing small molecules of water and hydrophilic uncharged molecules to move across the membrane along the concentration gradient.

Transport proteins spanning the plasma membrane facilitate the movement of ions and other complex, polar molecules which are typically prevented from moving across the membrane.

There are two types:

  • Carrier proteins bind specifically bind to molecules and move them down concentration gradients. Along with using facilitated diffusion, carrier proteins also use energy in the form of ATP and modifiy solute-specific regions, that aid in regulating ion exchange (K+ and Ca2+), through the hydrophobic layer of the plasma membrane.
  • Channel proteins which are pores filled with water versus enabling charged molecules to diffuse across the membrane, from regions of high concentration to regions of lower concentration. This is a passive part of facilitated diffusion.

Learn more about cellular life at brainly.com/question/11259903

Learn more about membrane components at brainly.com/question/1971706

Learn more about plasma membrane transport at brainly.com/question/11410881

#LearnWithBrainly

You might be interested in
What occurs to the cell during mitosis?
gtnhenbr [62]
During mitosis the cell splits and becomes two
8 0
3 years ago
Read 2 more answers
Molly, whose eyes are brown, inherited a gene for blue eyes from her mother and a gene for brown eyes from her father. mollys br
seropon [69]
Her brown eyes are inherited from her dads genes.
5 0
3 years ago
Which hydrocarbon rings are most common in nature?
UNO [17]
The Aromatic hydrocarbon is the most common in nature.
4 0
3 years ago
Cellular respiration occurs in the body 24 hours per day. During exercise, the rate of cellular respiration increases. Why does
Allushta [10]

Answer:

More oxygen is needed to produce more energy, and more carbon dioxide waste must be removed from the body.

Explanation:

8 0
2 years ago
Bacteria, like the Lactobacillus acidophilus use sugar as an energy source for anaerobic cellular respiration. This process prod
Anon25 [30]
This is a description of lactic acid fermentation.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Where is ATP synthase located in the mitochondrion?
    14·1 answer
  • Why should people be cautious about introducing organisms into new environments?
    9·1 answer
  • Which focuses on the composition of matter?
    5·2 answers
  • What process in the body is primarily controlled by testosterone?
    8·2 answers
  • O K-selected species tend to be opportunists.<br> a. True<br> b. False
    12·1 answer
  • The observer-expectancy effect describes how
    8·2 answers
  • Why do scientists use taxonomy to classify organism
    6·1 answer
  • Help now! For biology
    12·1 answer
  • What effects do humans have on erosion
    8·1 answer
  • Which correctly describes the role of histones in eukaryotic cell division?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!