AQA GCSE Biology Unit 3.1

Matthew T
Quiz by , created over 5 years ago

Twenty questions for the first section of Unit 3 in AQA GCSE Biology: Exchange of materials.

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Matthew T
Created by Matthew T over 5 years ago
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Question 1

Question
What is osmosis?
Answer
  • The diffusion of water from within a cell to outside it
  • The diffusion of water from a concentrated solution to a dilute solution
  • The diffusion of water from a dilute solution to a concentrated solution

Question 2

Question
Which two words describe a situation in which the concentration of water outside the cell is greater than within it?
Answer
  • Hypertonic
  • Isotonic
  • Hypotonic
  • Turgid
  • Flaccid
  • Plasmolysing

Question 3

Question
Which two words describe a situation in which the concentration of water outside the cell is equal to within it?
Answer
  • Hypertonic
  • Isotonic
  • Hypotonic
  • Turgid
  • Flaccid
  • Plasmolysing

Question 4

Question
Which two words describe a situation in which the concentration of water outside the cell is less than within it?
Answer
  • Hypertonic
  • Isotonic
  • Hypotonic
  • Turgid
  • Flaccid
  • Plasmolysing

Question 5

Question
True or false? Active transport does not require an input of energy.
Answer
  • True
  • False

Question 6

Question
True or false? Cells which carry out active transport have transport proteins and lots of mitochondria.
Answer
  • True
  • False

Question 7

Question
Which of these do plants absorb by active transport?
Answer
  • Mineral ions
  • Water
  • Carbon dioxide
  • Light

Question 8

Question
True or false? A sports drink can be easily replicated by adding a little salt to dilute orange squash.
Answer
  • True
  • False

Question 9

Question
Which part of the lung is responsible for gas exchange?
Answer
  • Trachea
  • Bronchi
  • Bronchioles
  • Alveoli

Question 10

Question
Which of these are adaptations of alveoli designed to increase the rate of exchange?
Answer
  • Spherical shape for large surface area
  • Transport proteins in alveolus cells
  • Film of moisture to transport dissolved gases
  • Good blood supply
  • Thin walls (only a single cell thick) to provide a short diffusion pathway
  • Lots of mitochondria to raise temperature by respiration for quicker diffusion

Question 11

Question
Which of these processes occur during inhalation?
Answer
  • Diaphragm muscles contract and flatten
  • Liver pushes up diaphragm into domed shape
  • External intercostal muscles contract
  • Internal intercostal muscles contract
  • Ribcage moves up and out
  • Ribcage moves in and down
  • Thoracic volume increases and pressure decreases
  • Thoracic volume decreases and pressure increases

Question 12

Question
Which of these processes occur during exhalation?
Answer
  • Diaphragm muscles contract and flatten
  • Liver pushes up diaphragm into domed shape
  • External intercostal muscles contract
  • Internal intercostal muscles contract
  • Ribcage moves up and out
  • Ribcage moves in and down
  • Thoracic volume increases and pressure decreases
  • Thoracic volume decreases and pressure increases

Question 13

Question
Which type of breathing aid is the iron lung?
Answer
  • Positive pressure
  • Negative pressure

Question 14

Question
True or false? The surface area of the small intestine is about 200-300 square metres.
Answer
  • True
  • False

Question 15

Question
What is a villus?
Answer
  • An ancient Roman house
  • The Latin word for "town"
  • A finger-like projection in the small intestine

Question 16

Question
What is the name given to cells which close and open the stomata?
Answer
  • Palisade cells
  • Guard cells
  • Mesophyll cells

Question 17

Question
True or false? The surface area of roots is expanded through an absence of root hair cells.
Answer
  • True
  • False

Question 18

Question
What is the transpiration stream?
Answer
  • The constant cycle of water from uptake in the roots to evaporation in the leaves
  • A small river which has a larger than average population of algae
  • The name given to flowing water which is unusually clear

Question 19

Question
True or false? Wilting is a plant mechanism designed to reduce water loss.
Answer
  • True
  • False

Question 20

Question
What device can be used to measure the rate of transpiration?
Answer
  • A potometer
  • A transpirometer
  • An osmometer