Biology exam that is tomorrow
Mastering Biology: Gene and Enzyme Quiz
Are you ready to test your knowledge on genes and enzymes? This quiz is designed for biology students preparing for exams. Whether you're revising key concepts or just curious about how enzymes work, this quiz will help reinforce your understanding.
- 26 challenging questions
- Multiple choice, checkboxes, and drop list formats
- Instant feedback on your answers
What is a gene?
A section of DNA with coded instructions to make a particular protein.
A section of RNA with coded instructions to make a particular piece of DNA
The chemical codes consists of four different bases that always pair up in the same way. How?
A paris up with G and T pairs up with C.
T pairs up with G and A pairs up with C.
T pairs up with A and G pairs up with C.
How many genes does a chromosome contain?
Where is DNA found?
Cytoplasm
Nucleus
Where are proteins made?
Cytoplasm
Nucleus
Each protein is made up of large numbers of...
Amino acid molecules
Hydrogencarbonate ions
What is an enzyme?
A chemical catalyst
A biological catalyst
Are enzymes proteins?
Yes
No
What is it called when the enzyme doesn't work anymore?
The enzyme is denatured
The enzyme is killed
The enzyme is catalysed
The enzyme is chemically killed
What do enzymes do?
They slow down the rate of reaction
They speed up the rate of reaction
They change the temperature in a reaction
They change the pH in a reaction
Are enzymes used up in a chemical reaction?
Yes
No
Enzymes are folded inte complex shapes that allow smaller molecules to fit into them. What is the place where these molecules fit in called?
Substrate
Catalyst
Active site
What denatures an enzyme?
PH
Temperature
PH and temperature
Time and the amounts of times it is used
How many times can an enzyme be used?
About 100
About 10 000
Until the shape of the active site changes
Only once
Enzymes are proteins made of living things. Are enzymes alive?
Yes
No
What is the optimum temperature of an enzyme?
The temperature at which the enzyme denatures
The temperature at which the enzyme works best
The temperature at which the enzyme starts to work
What is the equation for aerobic respiration?
Carbon dioxide + oxygen --> glucose + water + energy
Water + glucose -->carbon dioxide + oxygen + energy
Glucose + oxygen --> carbon dioxide + water + energy
What is the energy from respiration used for ?
Making larger molecules smaller
Making smaller molecules larger
Which enzyme catalyses this digestion reaction? starch --> sugars
Amylase
Protease
Lipase
Which enzyme catalyses this digestion reaction? lipids --> fatty acids + glycerol
Amylase
Protease
Lipase
Which enzyme catalyses this digestion? proteins --> amino acids
Amylase
Protease
Lipase
Where is amylase found?
Stomach, pancreas, small intestine
Salivary glands, pancreas, small intestine
Pancreas, small intestine
Where is protease found?
Salivary glands, pancreas, small intestine
Stomach, pancreas, small intestine
Pancreas, small intestine
Where is lipase found?
Pancreas, small intestine
Salivary glands, pancreas, small intestine
Stomach, pancreas, small intestine
The stomach produces hydrochloric acid. At what pH do enzymes in the stomach work best?
Low
Neutral
High
After the stomach the food is acidic, but it travels to the small intestine which is alkaline. What substance neutralises the food to provide the alkaline conditions needed?
A substance called neutraliser
A substance called duodenum
A substance called bile
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