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Cellular Transport
Test Description: General Questions about Celluar Transport
Instructions: Answer all questions to get your test result.
1) Net movement of water across a cell membrane occurs
A
From an isotonic solution to another isotonic solution
B
From a hypertonic solution to a hypotonic solution
C
Through water channels in osmosis
D
From a hypotonic soultion to a hypertonic solution
2) A cell must always expend energy to trasnport substances using
A
Ion channels
B
Osmosis
C
Facilitated diffusion
D
Cell membrane pumps
3) A concentration difference across space is called
A
Concentration gradient
B
Isotonic
C
Plasmolysis
D
Phagocytosis
4) Which of the following is a substance that can pass directly through the cell membrane by simple diffusion?
A
Na+ ions
B
Oxygen
C
Cells
D
NaCl
5) Concentration of solutes inside and outside the cell are equal when the solution is
A
isotonic
B
hypertonic
C
both hypertonic and hypotonic
D
hypertonic
6) Diffusion requires
A
All of the choices
B
An aqueous solution
C
A difference in concentration through a space
D
A cell membrane
7) If the molecular concentration of a substance is the same throughout space, the substance
A
Has a large concentration gradient
B
Is in equilibrium
C
Has a small concentration gradient
D
Will undergo diffusion
8) Exocytosis is a
A
Mechanism by which cells ingest other cells
B
Way for cells to release large molecules, such as proteins
C
Transport process in which vesicles are formed from pounches in the cell membrane
D
Type of passive transport
9) When a cell uses energy to transport a particle through the cell membrane to an area of higher concentration, it is using
A
Osmosis
B
Active Transport
C
Endocytosis
D
Diffusion
10) Which of the following is NOT a characteristic of active transport?
A
It relies on carrier proteins that function as pumps.
B
It involves facilitated diffusion
C
It moves substances against a concentration gradient
D
It requires energy from the cell
*select an answer for all questions
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