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
9966 [12]
2 years ago
8

Eric made a physical model of a cell membrane by putting one zip-top plastic bag inside another. He punched some straws through

the plastic so that they led from outside the outer bag to the inside of the inner bag.
Which of the following features of a cell membrane can be seen using Eric's physical model?

Proteins and other molecules can move around within the cell membrane.
A cell membrane is made of two layers.
Some molecules can pass directly through the cell membrane.
Pores and proteins in the cell membrane allow passage through it.
Biology
2 answers:
Diano4ka-milaya [45]2 years ago
4 0

Answer:

A cell membrane is made of two layers.

The cell membrane is composed by a phospholipid bilayer where the interior side is hydrophobic and non-polar, while the outside is hydrophilic and polar

Pores and proteins in the cell membrane allow passage through it.

The pores and proteins in the cell membrane have several functions such as, for example, cell signaling (proteins) and selective transport (pores)

storchak [24]2 years ago
3 0

Pores and proteins in the cell membrane allow passage through it.

 A cell membrane is made of two layers.

You might be interested in
Energy can be generally defined as the ____.
Firdavs [7]

Answer:

I think the answer is capacity to do work

3 0
3 years ago
Cyclin B1, a key cell cycle regulatory protein in vertebrates, is mostly cytosolic before mitosis. Early in mitosis, however, th
Ludmilka [50]

Answer:

Phosphorylation within the nuclear export signal interferes with the function of the  signal.

Explanation:

In biochemistry, phosphorylation is the addition of a phosphate group (PO4) to a protein or other molecule. Phosphorylation is a major player in protein regulation mechanisms, preventing protein-catalyzed reaction product from accumulating in the body causing problems.

However, in some cases phosphorylation may cause nuclear accumulation of a protein in the nucleus of the cell. An example of this is the protein shown in the question above. In this case, phosphorylation in the nuclear export signal interferes with the signal function, resulting in protein accumulation in the nucleus.

4 0
3 years ago
Please help me with this
Arlecino [84]
The answer is vacuole!!!
4 0
2 years ago
Because plant cells have chloroplasts and can do photosynthesis, why do they also need mitochondria?
sleet_krkn [62]
Plant Cells need mitochondrion to break down the glucose or cell respiration.
Hoped i helped:D
4 0
3 years ago
What are these species a type of?
GaryK [48]

Answer:

They could all become some sort of food for people.

Explanation: Hope this helps! :)

5 0
3 years ago
Other questions:
  • Which type of bond forms between two water molecules?
    10·1 answer
  • What will be the effect of placing a plant cell in a hypotonic solution? A) The plant will wilt. B) The cell will shrink in size
    13·2 answers
  • Because of apoptosis, _________________________.
    5·1 answer
  • Please help me write this paragraph!!
    14·1 answer
  • A red blood cell has been placed into three different solutions. one solution is isotonic to the cell, one solution is hypotonic
    10·1 answer
  • PLEASE ANSWER THESE QUESTIONS COMPLETELY!!! WILL MARK BRAINLIEST!!!
    12·2 answers
  • The equation shows cellular respiration. During cellular respiration, glucose combines with oxygen to form carbon dioxide,
    6·1 answer
  • whenreffering to hypertonic isotonic and hypotonic is there a word i could use to describe all of these at once?
    15·1 answer
  • Please help thanks....
    15·1 answer
  • Part A Match the structures with their appropriate functions: O Roots allow plants to obtain water, nutrients and glucose, while
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!