AQA AS Biology Paper 1 Exam
Questions and Answers 100%
PASS
ATP has 3 phosphates and DNA has 1. Give another difference in their
structures.—ANSWER-ATP has ribose and DNA nucleotide has
deoxyribose
Explain the importance transferring the same volume of liquid culture onto
each agar plate. /1—ANSWER-So same number of bacteria transferred to
allow comparison;
Explain the advantages of lipid droplet and micelle formation. /3—ANSWER-
1. Droplets increase surface areas (for lipase /
enzyme action);
2. (So) faster hydrolysis / digestion (of
triglycerides / lipids);
3. Micelles carry fatty acids and glycerol /
monoglycerides to / through membrane / to
Questions and Answers 100%
PASS
ATP has 3 phosphates and DNA has 1. Give another difference in their
structures.—ANSWER-ATP has ribose and DNA nucleotide has
deoxyribose
Explain the importance transferring the same volume of liquid culture onto
each agar plate. /1—ANSWER-So same number of bacteria transferred to
allow comparison;
Explain the advantages of lipid droplet and micelle formation. /3—ANSWER-
1. Droplets increase surface areas (for lipase /
enzyme action);
2. (So) faster hydrolysis / digestion (of
triglycerides / lipids);
3. Micelles carry fatty acids and glycerol /
monoglycerides to / through membrane / to
