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Course: Cambridge AS & A Level Biology 9700 ...
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Cambridge AS & A Level Biology 9700 — Revision Notes

1 · Cell Structure

0/26

2 · Biological Molecules

0/51

3 · Enzymes

0/29

4 · Cell Membranes and Transport

0/41

5 · The Mitotic Cell Cycle

0/21

6 · Nucleic Acids and Protein Synthesis

0/22

7 · Transport in Plants

0/28

8 · Transport in Mammals

0/39

9 · Gas Exchange

0/13

10-11 · Infectious Disease and Immunity

0/43

12 · Energy and Respiration

0/37

13 · Photosynthesis

0/23

14-15 · Homeostasis and Control

0/57

16 · Inherited Change

0/34

17-18 · Selection, Evolution, Classification and Conservation

0/69

19 · Genetic Technology

0/44
Quiz

4.2 Movement into & out of Cells – Exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
Osmosis is the movement of:
Water through a partially permeable membrane from dilute to concentrated solution
Solute from high to low concentration
Water from concentrated to dilute solution
Any molecule through a fully permeable membrane
2.
Which term is described as: the boundary controlling movement into and out of a cell?
cytoplasm
mitochondria
cell membrane
nucleus
3.
A plant cell placed in concentrated salt solution will become:
Turgid
Plasmolysed
Burst
Unchanged
4.
Root hair cells absorb nitrate ions from soil where nitrate concentration is lower than in the cell. This is:
Diffusion
Osmosis
Transpiration
Active transport
5.
Which process requires energy from respiration?
Diffusion
Osmosis
Active transport
Evaporation
6.
Which cube has the largest surface area to volume ratio?
4 cm cube
3 cm cube
2 cm cube
1 cm cube
7.
Which change would decrease the rate of diffusion?
Raising the temperature
Making the membrane thicker
Increasing the surface area
Increasing the concentration gradient
8.
Which statement best describes Turgid?
The surface area of an object divided by its volume; smaller objects have a larger ratio.
When a plant cell loses so much water by osmosis that the cytoplasm and membrane pull away from the cell wall.
The net movement of water molecules from a dilute solution (high water potential) to a more concentrated solution (low water potential) through a partially permeable membrane.
Describes a plant cell swollen with water, with its cytoplasm pushing against the cell wall.
9.
Which statement best describes Partially permeable membrane?
The net movement of particles from a region of higher concentration to a region of lower concentration, down a concentration gradient, as a result of random movement.
The difference in concentration of a substance between two regions.
When a plant cell loses so much water by osmosis that the cytoplasm and membrane pull away from the cell wall.
A membrane that lets small molecules such as water pass through but stops larger molecules such as sucrose.
10.
Which statement best describes Surface area to volume ratio?
The net movement of water molecules from a dilute solution (high water potential) to a more concentrated solution (low water potential) through a partially permeable membrane.
Describes a plant cell swollen with water, with its cytoplasm pushing against the cell wall.
A protein in the cell membrane that binds a specific substance and moves it across the membrane.
The surface area of an object divided by its volume; smaller objects have a larger ratio.
11.
Which statement best describes Osmosis?
The net movement of water molecules from a dilute solution (high water potential) to a more concentrated solution (low water potential) through a partially permeable membrane.
The net movement of particles from a region of higher concentration to a region of lower concentration, down a concentration gradient, as a result of random movement.
The movement of substances against a concentration gradient using energy from respiration and carrier proteins in the membrane.
A membrane that lets small molecules such as water pass through but stops larger molecules such as sucrose.
12.
Glucose entering a red blood cell through a carrier protein, down its concentration gradient, is _____.
simple diffusion
facilitated diffusion
active transport
osmosis
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Part of 4 · Cell Membranes and Transport — see every lesson and quiz in this unit.
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