AQA A-Level Biology Questions With
Verified Solutions
ATP - CORRECT ANSWER- adenosine triphosphate
universal energy currency
structure of ATP - CORRECT ANSWER- nucleotide derivative
1 ribose, 1 adenine base, 3 phosphate groups
uses of ATP - CORRECT ANSWER- metabolism, movement, active transport, cell
maintenance, synthesis, thermoregulation
ATP in aerobic respiration - CORRECT ANSWER- released as free energy with 30
molecules per glucose
hydrolysis of ATP - CORRECT ANSWER-
re-synthesis of ATP - CORRECT ANSWER-
photophosphorylation - CORRECT ANSWER- in chloroplast
ATP is formed from ADP and Pi utilising the energy of sunlight
oxidative phosphorylation - CORRECT ANSWER- in mitochondria
the production of ATP using energy derived from the electron transport chain in cellular
respiration
substrate-level phosphorylation - CORRECT ANSWER- in cytoplasm
the formation of ATP by directly transferring a phosphate group to ADP from an
intermediate substrate in catabolism
catabolism - CORRECT ANSWER- metabolic pathway that break down molecules,
releasing energy
anabolism - CORRECT ANSWER- metabolic pathway that construct molecules,
requiring energy V DQ
polymer - CORRECT ANSWER- long molecules formed from combinations of many
monomers joined together
condensation reaction - CORRECT ANSWER- a chemical reaction in which two or
more molecules join and produces one water molecule
, hydrolysis reaction - CORRECT ANSWER- A chemical reaction that breaks apart a
larger molecule by adding a molecule of water
isomers - CORRECT ANSWER- Compounds with the same chemical formulae but
different structures.
carbohydrates - CORRECT ANSWER- compounds made from carbon, hydrogen
and oxygen (monosaccharides, disaccharides and polysaccharides), important energy
store
monosaccharide - CORRECT ANSWER- simple sugars (glucose, fructose,
galactose)
disaccharide - CORRECT ANSWER- two monosaccharides joined together by a
glycosidic bond
polysaccharide - CORRECT ANSWER- many sugar units joined by a glycosidic
bond
maltose - CORRECT ANSWER- α glucose + α glucose
lactose - CORRECT ANSWER- glucose + galactose
sucrose - CORRECT ANSWER- glucose + fructose
where is lactose found? - CORRECT ANSWER- milk
where is maltose found? - CORRECT ANSWER- germinating seeds
where is sucrose found? - CORRECT ANSWER- table sugar
cellulose - CORRECT ANSWER- polymer of β glucose
starch - CORRECT ANSWER- polymer of α glucose (amylose + amylopectin)
what is the structure of cellulose? - CORRECT ANSWER- long, unbranched chains
of β glucose, insoluble
where is cellulose found? - CORRECT ANSWER- plant cell walls
why is cellulose strong? - CORRECT ANSWER- chains linked by h bonds form
microfibrils giving high tensile strength to prevent osmotic lysis
what is the structure of starch? - CORRECT ANSWER- long, highly-branched,
compact helix and insoluble
where is starch found? - CORRECT ANSWER- energy stores in plants
glycogen - CORRECT ANSWER- storage form of glucose in animals, compact,
highly-branched structure
limits of the Benedict's test - CORRECT ANSWER- isn't specific or sensitive
Verified Solutions
ATP - CORRECT ANSWER- adenosine triphosphate
universal energy currency
structure of ATP - CORRECT ANSWER- nucleotide derivative
1 ribose, 1 adenine base, 3 phosphate groups
uses of ATP - CORRECT ANSWER- metabolism, movement, active transport, cell
maintenance, synthesis, thermoregulation
ATP in aerobic respiration - CORRECT ANSWER- released as free energy with 30
molecules per glucose
hydrolysis of ATP - CORRECT ANSWER-
re-synthesis of ATP - CORRECT ANSWER-
photophosphorylation - CORRECT ANSWER- in chloroplast
ATP is formed from ADP and Pi utilising the energy of sunlight
oxidative phosphorylation - CORRECT ANSWER- in mitochondria
the production of ATP using energy derived from the electron transport chain in cellular
respiration
substrate-level phosphorylation - CORRECT ANSWER- in cytoplasm
the formation of ATP by directly transferring a phosphate group to ADP from an
intermediate substrate in catabolism
catabolism - CORRECT ANSWER- metabolic pathway that break down molecules,
releasing energy
anabolism - CORRECT ANSWER- metabolic pathway that construct molecules,
requiring energy V DQ
polymer - CORRECT ANSWER- long molecules formed from combinations of many
monomers joined together
condensation reaction - CORRECT ANSWER- a chemical reaction in which two or
more molecules join and produces one water molecule
, hydrolysis reaction - CORRECT ANSWER- A chemical reaction that breaks apart a
larger molecule by adding a molecule of water
isomers - CORRECT ANSWER- Compounds with the same chemical formulae but
different structures.
carbohydrates - CORRECT ANSWER- compounds made from carbon, hydrogen
and oxygen (monosaccharides, disaccharides and polysaccharides), important energy
store
monosaccharide - CORRECT ANSWER- simple sugars (glucose, fructose,
galactose)
disaccharide - CORRECT ANSWER- two monosaccharides joined together by a
glycosidic bond
polysaccharide - CORRECT ANSWER- many sugar units joined by a glycosidic
bond
maltose - CORRECT ANSWER- α glucose + α glucose
lactose - CORRECT ANSWER- glucose + galactose
sucrose - CORRECT ANSWER- glucose + fructose
where is lactose found? - CORRECT ANSWER- milk
where is maltose found? - CORRECT ANSWER- germinating seeds
where is sucrose found? - CORRECT ANSWER- table sugar
cellulose - CORRECT ANSWER- polymer of β glucose
starch - CORRECT ANSWER- polymer of α glucose (amylose + amylopectin)
what is the structure of cellulose? - CORRECT ANSWER- long, unbranched chains
of β glucose, insoluble
where is cellulose found? - CORRECT ANSWER- plant cell walls
why is cellulose strong? - CORRECT ANSWER- chains linked by h bonds form
microfibrils giving high tensile strength to prevent osmotic lysis
what is the structure of starch? - CORRECT ANSWER- long, highly-branched,
compact helix and insoluble
where is starch found? - CORRECT ANSWER- energy stores in plants
glycogen - CORRECT ANSWER- storage form of glucose in animals, compact,
highly-branched structure
limits of the Benedict's test - CORRECT ANSWER- isn't specific or sensitive
