AQA AS BIOLOGY EXAMPREP REVIEW
SHEET WITH TESTED QUESTIONS AND
COMPLETE SOLUTIONS
●● Plant cells include:
Answer: Cell wall, Permanent Vacuole, Chloroplasts
●● What do ribosomes do?
Answer: synthesize protein
●● What do mitochondria do?
Answer: Where aerobic respiration occurs
●● Equation for magnification
Answer: magnification = image size / real size
●● All specialised cells and their specific functions
Answer: Sperm (reproduction), Nerve (rapid signalling), Muscle
(contraction), Root hair (absorbing water and minerals), Phloem and
Xylem (transporting substances)
●● Stem cell use in medacine
, Answer: Bone marrow transplant can replace faulty blood cells,
embryonic cells can create insulin and nerve cells
●● Diffusion
Answer: High to low concentration
●● Osmosis
Answer: Water molecules from high to low concentration
●● Active transport
Answer: Low to high concentration, requires energy
●● Basic defintion of an enzyme
Answer: A biological catalyst which increases the speed of a reaction
without being used up in the reaction. Works with the lock and key
method where only specific substrates can bind to specific enzmes
●● Amylase
Answer: -Breaks down starch into maltose/dextrin
-Produced in the slaivary glands, pancreas and small intestine
●● Protease
Answer: -Breaks down proteins into Amino acids
SHEET WITH TESTED QUESTIONS AND
COMPLETE SOLUTIONS
●● Plant cells include:
Answer: Cell wall, Permanent Vacuole, Chloroplasts
●● What do ribosomes do?
Answer: synthesize protein
●● What do mitochondria do?
Answer: Where aerobic respiration occurs
●● Equation for magnification
Answer: magnification = image size / real size
●● All specialised cells and their specific functions
Answer: Sperm (reproduction), Nerve (rapid signalling), Muscle
(contraction), Root hair (absorbing water and minerals), Phloem and
Xylem (transporting substances)
●● Stem cell use in medacine
, Answer: Bone marrow transplant can replace faulty blood cells,
embryonic cells can create insulin and nerve cells
●● Diffusion
Answer: High to low concentration
●● Osmosis
Answer: Water molecules from high to low concentration
●● Active transport
Answer: Low to high concentration, requires energy
●● Basic defintion of an enzyme
Answer: A biological catalyst which increases the speed of a reaction
without being used up in the reaction. Works with the lock and key
method where only specific substrates can bind to specific enzmes
●● Amylase
Answer: -Breaks down starch into maltose/dextrin
-Produced in the slaivary glands, pancreas and small intestine
●● Protease
Answer: -Breaks down proteins into Amino acids
