851845
Pregunta 1
Pregunta
What is osmosis?
Respuesta
-
The diffusion of water from within a cell to outside it
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The diffusion of water from a concentrated solution to a dilute solution
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The diffusion of water from a dilute solution to a concentrated solution
Pregunta 2
Pregunta
Which two words describe a situation in which the concentration of water outside the cell is greater than within it?
Respuesta
-
Hypertonic
-
Isotonic
-
Hypotonic
-
Turgid
-
Flaccid
-
Plasmolysing
Pregunta 3
Pregunta
Which two words describe a situation in which the concentration of water outside the cell is equal to within it?
Respuesta
-
Hypertonic
-
Isotonic
-
Hypotonic
-
Turgid
-
Flaccid
-
Plasmolysing
Pregunta 4
Pregunta
Which two words describe a situation in which the concentration of water outside the cell is less than within it?
Respuesta
-
Hypertonic
-
Isotonic
-
Hypotonic
-
Turgid
-
Flaccid
-
Plasmolysing
Pregunta 5
Pregunta
True or false? Active transport does not require an input of energy.
Respuesta
- True
- False
Pregunta 6
Pregunta
True or false? Cells which carry out active transport have transport proteins and lots of mitochondria.
Respuesta
- True
- False
Pregunta 7
Pregunta
Which of these do plants absorb by active transport?
Respuesta
-
Mineral ions
-
Water
-
Carbon dioxide
-
Light
Pregunta 8
Pregunta
True or false? A sports drink can be easily replicated by adding a little salt to dilute orange squash.
Respuesta
- True
- False
Pregunta 9
Pregunta
Which part of the lung is responsible for gas exchange?
Respuesta
-
Trachea
-
Bronchi
-
Bronchioles
-
Alveoli
Pregunta 10
Pregunta
Which of these are adaptations of alveoli designed to increase the rate of exchange?
Respuesta
-
Spherical shape for large surface area
-
Transport proteins in alveolus cells
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Film of moisture to transport dissolved gases
-
Good blood supply
-
Thin walls (only a single cell thick) to provide a short diffusion pathway
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Lots of mitochondria to raise temperature by respiration for quicker diffusion
Pregunta 11
Pregunta
Which of these processes occur during inhalation?
Respuesta
-
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
Pregunta 12
Pregunta
Which of these processes occur during exhalation?
Respuesta
-
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
Pregunta 13
Pregunta
Which type of breathing aid is the iron lung?
Respuesta
-
Positive pressure
-
Negative pressure
Pregunta 14
Pregunta
True or false? The surface area of the small intestine is about 200-300 square metres.
Respuesta
- True
- False
Pregunta 15
Pregunta
What is a villus?
Respuesta
-
An ancient Roman house
-
The Latin word for "town"
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A finger-like projection in the small intestine
Pregunta 16
Pregunta
What is the name given to cells which close and open the stomata?
Respuesta
-
Palisade cells
-
Guard cells
-
Mesophyll cells
Pregunta 17
Pregunta
True or false? The surface area of roots is expanded through an absence of root hair cells.
Respuesta
- True
- False
Pregunta 18
Pregunta
What is the transpiration stream?
Respuesta
-
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
Pregunta 19
Pregunta
True or false? Wilting is a plant mechanism designed to reduce water loss.
Respuesta
- True
- False
Pregunta 20
Pregunta
What device can be used to measure the rate of transpiration?
Respuesta
-
A potometer
-
A transpirometer
-
An osmometer
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