Cells and simple cell transport

What is the function of the cell's nucleus?
To control the activities of the cell
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What is the function of the ribosomes?
To act as the site for protein synthesis
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Which of these is a part found in plant cells but not in animal cells?
Cell wall
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Which part is missing from human red blood cells?
Nucleus
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What is diffusion?
The movement of particles from high concentration to low concentration
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Which change would NOT speed up diffusion in an animal cell?-Make the cell membrane thinner-Move the blood supply closer-Make the cell rounder
Make the cell rounder
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Which substance moves out of respiring cells?
Carbon dioxide
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How are bacterial cells different from animal cells?
They have a cell wall and no nucleus
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How are yeast cells different from bacterial cells?
They have a nucleus
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What is a tissue?
A group of cells with a similar structure and function
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What does the epithelial tissue in the stomach do?
Covers the inner and outer surfaces of the stomach
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In the digestive system, digestion happens in...
The stomach and small intestine
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Where is bile produced?
The liver
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In the digestive system, water is mostly absorbed in:
The large intestine
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What is the main job of the glandular tissue?
Produce substances such as enzymes and hormones
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What are stem and roots an example of in plants?
Organs
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Mesophyll is a tissue in plants. It......
Carries out photosynthesis
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What is the role of xylem and phloem?
Transport substances around the plant
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Which gas is needed for photosynthesis?
Carbon dioxide
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What type of energy is needed for photosynthesis to happen?
Light
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Tomatoes in a greenhouse grow faster if the carbon dioxide concentration is increased. This shows that:
Carbon dioxide concentration must have been a limiting factor-Carbon dioxide concentration must have been a limiting factor if the rate of photosynthesis increased with more of the gas.
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Photosynthesis can be summarised by which word equation?
carbon dioxide + water → glucose + oxygen
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Why do plants need nitrate ions?
Plants need nitrate ions to produce proteins.
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Fats, oils and starch are used by plants for storage. What they have in common is that they are:
Insoluble
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The sampling square used in fieldwork is called a:
Quadrat
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Which is the most likely reason why there is little grass under a tree?
There is less sunlight reaching the ground under a tree.
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What type of substances do lipases break down?
Fats
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Amylase catalyses the breakdown of starch into:
Sugars
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Proteases are used in some baby foods to:
Predigest the proteins
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Stomach enzymes work best around pH level:
2
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What happens to enzymes at very high temperatures?
They are denatured
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What is the optimum temperature for an enzyme?
The temperature at which its activity is greatest
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What are enzymes?
Proteins
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Which is the correct equation for aerobic respiration in humans?
glucose + oxygen → carbon dioxide + water.
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During exercise, the heart rate increases to:
It increases to supply more oxygen and glucose to the respiring cells
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Why does anaerobic respiration occur during hard exercise?
There may be insufficient oxygen supplied to the muscle cells
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Where in the cell do most aerobic respiration reactions happen?
Most aerobic respiration reactions happen in the mitochondria.
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Which is the correct equation for anaerobic respiration in humans?
glucose → lactic acid
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What substance is glucose stored as in the muscles?
Glycogen
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In terms of energy released from glucose:
Aerobic respiration releases more energy than anaerobic respiration.
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Other cards in this set

Card 2

Front

What is the function of the ribosomes?

Back

To act as the site for protein synthesis

Card 3

Front

Which of these is a part found in plant cells but not in animal cells?

Back

Preview of the front of card 3

Card 4

Front

Which part is missing from human red blood cells?

Back

Preview of the front of card 4

Card 5

Front

What is diffusion?

Back

Preview of the front of card 5
View more cards

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