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43 Cards in this Set
- Front
- Back
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What type of living organism carries out photosynthesis |
Plants |
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What gas is required for photosynthesis |
Carbon dioxide |
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Which has is produced during photosynthesis |
Oxygen |
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What else does a plant make during photosynthesis |
Glucose |
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Where does photosynthesis occur |
Chloroplasts |
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What is chlorophyll |
A green pigment found inside chloroplasts that traps light energy from the sun |
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What us the equation for photosynthesis |
Carbon dioxide + water (light and chlorophyll) -> glucose + oxygen |
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What is the fate of Glucose |
- Can be used for energy to power cell processes - Can be converted into starch for storage - Can be converted to cellulose and used to create a cell wall |
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What are the limiting factors of photosynthesis |
Carbon dioxide concentration Light intensity Temperature |
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What type of plant can be used to investigate the rate of photosynthesis |
Elodea |
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What type of energy does food contain |
Chemical |
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Give four reasons why cells need energy |
Cell division Cell growth Building up of small molecules Uptake of chemicals Movement |
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Which two food groups give us energy |
Fats and oils and proteins |
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Which food group gives us the most energy |
Fats and oils |
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What is the equation for aerobic respiration |
Glucose + oxygen -> water + Carbon dioxide + atp (energy) |
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What does the energy produced come in the form of |
Heat |
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Which piece of equipment can be used to measure the energy content of foods |
A calorimeter |
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What makes it reliable |
Food is enclosed so little heat escaped and there is an even distribution of heat. Plus it burns the food completely |
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Why does anaerobic respiration/ fermentation occur |
Because there is a lack of oxygen |
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What is produced from fermentation in animal cells |
Lactate and a little energy |
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What is produced from fermentation in plant or yeast cells |
Carbon dioxide ethanol and a little energy |
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Where does fermentation occur |
Cytoplasm |
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Give a reason for fermentation in a muscle cell |
Because of the muscle cell moving all the time, it's using up the oxygen |
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Why is fermentation in a plant cell irreversible |
Because the carbon dioxide is lost to the surroundings |
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How many atp are produced in aerobic respiration and fermentation |
AR= 38 F=2 |
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What is the first stage in photosynthesis |
Photolysis |
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What is photolysis |
The splitting of water (by light energy) into hydrogen and oxygen |
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What is the second stage of photosynthesis |
Carbon dioxide fixation |
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What is carbon fixation |
Carbon fixation is the joining of hydrogen and carbon dioxide (by energy) into glucose |
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What is the first stage of respiration |
Glycolysis |
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What is glycolysis |
The splitting of glucose into two pyruvate and two ATP |
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When each of molecule of pyruvate is further broken down, what is produced |
Each pyruvate is broken down into 18 ATP, carbon dioxide and water |
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What is respiration |
A series of enzyme controlled reactions by which energy from food is released and used to power cell processes |
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What us phosphorylation |
The building of adp plus inorganic phosphate into atp using energy |
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What is yeast |
Yeast is a single celled fungus |
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What is yeast used in |
Baking and brewing |
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How does yeast multiply |
By budding; nucleus divides then cytoplasm |
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What is the equation for fermentation in yeast |
Yeast + sugar -> alcohol + Carbon dioxide + a little energy |
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What happens during germination |
Starch is broken down into sugar by amylase |
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What happens during malting |
The conversion of starch to the sugar Maltese inside the barley grains |
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How can the rate of photosynthesis be measured |
By the production of oxygen. You can count the bubbles it makes |
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What is the type of cell used in making yoghurt |
Bacteria |
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What is the milk sugar used by those cells |
Lactose |
