Which of these is selectively permeable?

all of these are selectively permeable

What kind of transport doesn't require the use of energy to move materials across the membrane?

facilitated diffusion, diffusion

Equilibrium is reached

when particles are evenly distributed through the space.

The primary function of the cell membrane is

to control what moves in and out of the cell.

What is concentration?

amount of things in a given area

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Cell Membranes & Cell Transport

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Covers the basics about cell membranes and cell transport. Made for grade 10 Biology.

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Questions 13

Answers

1
Passive transport
doesn't require energy.
requires energy.
moves particles against a concentration gradient.
moves particles from a high to a low concentration.
2
What molecules are imbedded in the phospholipid bilayer?
ribosomes
nucleic acids
proteins
glucose
3
Which of these is selectively permeable?
a strainer
all of these are selectively permeable
a window screen
a cell membrane
4
What kind of transport doesn't require the use of energy to move materials across the membrane?
active transport
facilitated diffusion
diffusion
5
Equilibrium is reached
only during passive transport.
at the end of active transport.
when movement of particles stops.
when particles are evenly distributed through the space.
6
What is structure "D"?
a glucose molecule
a phospholipid
cholesterol
a protein
7
"A" is
cholesterol
a nonpolar fatty acid
a protein
a polar phosphate
8
Movement of particles from an area of high concentration to an area of lower concentration is:
osmosis
equilibrium
endocytosis
diffusion
9
The basic structure of the cell membrane is
a liquid bilayer.
made of proteins.
impermeable.
a phospholipid bilayer.
10
Another name for the cell membrane is
the cell wall
the nuclear membrane
the endocytic barrier
the plasma membrane
11
The primary function of the cell membrane is
to control what moves in and out of the cell.
to provide support for the cell.
to protect the cell
cell signaling.
12
What is concentration?
the weight of a substance
the density of a substance
the amount of mass something has
amount of things in a given area
13
Active transport
all of the answers are correct
is usually done by transport proteins in the cell membrane
moves materials against a concentration gradient
requires energy

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