B4 (biology) (booklet)
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
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Name the 2 reactants in photosynthesis?
Carbon dioxide Water
Name 2 products formed in photosynthesis
Oxygen Glucose
Write the word equation for photosynthesis
Carbon dioxide + water → oxygen + glucose
Write the symbol equation for photosynthesis
CO2+H2O →O2+C6H12O6
Describe what happens to the rate of photosynthesis as temperature increases
Rate of photosynthesis increases and then decreases
Describe what happens to the rate of photosynthesis as Light intensity increases
Rate of photosynthesis increases and then remains constant
State 3 limiting factors for photosynthesis
Light Chlorophyll Carbon dioxide
Name the plant used to investigate the effect of different factors on rate of photosynthesis
Elodea (pondweed)
How do you calculate the rate of photosynthesis of an aquatic plant?
Count the number of O2 bubbles produced in a minute
How can you more accurately, calculate the rate of photosynthesis of an aquatic plant?
Record volume of gas produced using a gas syringe
Which cells are adapted for increased photosynthesis?
Palisade cells
How are palisade cells adapted for increased rates of photosynthesis?
Lots of chloroplast and chlorophyll
Describe what happens to the rate of photosynthesis as carbon dioxide increases
The rate of photosynthesis increases, and then remains constant
State three limiting factors for photosynthesis
carbon dioxide concentration Temperature Light intensity
In a variegated leaf, why do some parts appear white?
There is no chlorophyll
State 5 uses of glucose produced during photosynthesis
Respiration Stored as insoluble starch Stored as fat/ oils Making cellulose Making amino acids
State Two substances required for making proteins in plants
Nitrate ions and glucose
Which substance is used to test for the presence of starch?
Iodine solution
What colour will iodine solution turn int the presence of starch?
Blue/black
What colour will iodine solution turn if no starch is present?
Remains orange
Which substance is used to test for the presence of sugar?
Benedict’s solution
What colour will Benedict solution turn in the presence of sugar?
Red (lots of sugar) Orange (some sugar) Green (small amount of sugar)
What colour will Benedict’s solution turn if no glucose is present?
Remains blue
Which substance is used to test for the presence of protein?
Biuret’s solution