WorksheetsHHB 1.8 Homework revision
Total questions: 27
Worksheet time: 14mins
In the citric acid cycle, what reacts with acetyl to form citrate?
pyruvate
oxaloacetate
co enzyme A
glucose
What is pyruvate converted to in the absence of oxygen?
glucose
sucrose
lactose
lactate
What does the conversion of pyruvate to lactate involve?
the transfer of a phosphate from the ATP produced during glycolysis to pyruvate in order to produce lactate.
the transfer of hydrogen ions from the NADH produced during glycolysis to pyruvate in order to produce lactate.
the transfer of hydrogen from the NAD produced during glycolysis to pyruvate in order to produce lactate.
the transfer of electrons from the NADH to pyruvate in order to produce lactate.
Slow twitch muscles have many ......
ribosomes
mitochondria
nuclei
Protein pumps
Fast twitch fibres have ....................... mitochondria than slow twitch muscle fibres
fewer
more
Fast twitch muscle fibres are useful for
long distance running
weight lifting
Fast twitch muscle fibres can generate ATP through ........................ only
citric acid cycle
glycolysis
electron transport chain
the major storage fuel of fast twitch muscle fibres is
sucrose
glucose
fat
glycogen
the major storage fuel of slow twitch muscle fibres is
fats
glycogen
amino acids
myglobin
Which type of muscle fibre has a high concentration of the oxygen storing protein, myglobin
fast twitch
slow twitch
During vigorous exercise, the muscle cells do not get sufficient oxygen to support the _____ _______ _______
(a)
The regeneration of NAD is needed to maintain ____ ________ through glycolysis.
(a)
When the oxygen debt is repaid this allows respiration to provide the energy to convert lactate back to pyruvate and (a) in the liver
When the oxygen debt is repaid this allows (a) to provide the energy to convert lactate back to pyruvate and glucose in the liver
Slow-twitch muscle fibres rely on aerobic respiration to generate ATP and have many mitochondria, a large blood supply and a high concentration of the oxygen-storing protein (a) .
Explain the importance of pyruvate being converted to lactate
Allows ATP to be generated
Allows 2 ATP to be generated
Allows Hydrogen ions to be added from NADH
regenerates the NAD needed to maintain ATP production in glycolysis
Prevents muscles from cramping the somatic system can function
Select the statements which describe Slow-twitch muscle fibres
contract slowly
contract rapidly
can contract only for short duration
can contract for longer
Have high concentration of the oxygen-storing protein myoglobin
Select the statements which describe Fast-twitch muscle fibres
contract slowly
contract rapidly
can contract only for short duration
can contract for longer
Have high concentration of the oxygen-storing protein myoglobin
The major storage fuel is fats.
slow-twitch muscle fibres
fast-twitch muscle fibres
neither
both
The major storage fuel is glycogen.
slow-twitch muscle fibres
fast-twitch muscle fibres
neither
both
have fewer mitochondria
slow-twitch muscle fibres
fast-twitch muscle fibres
neither
both
a large blood supply
slow-twitch muscle fibres
fast-twitch muscle fibres
neither
both
have many mitochondria
slow-twitch muscle fibres
fast-twitch muscle fibres
neither
both
Which is the highest proportion in the legs of a long distance runner
slow-twitch muscle fibres
fast-twitch muscle fibres
Equal proportions
Radom proportion as fertilisation is random
Which is the highest proportion in the legs of a cross-country skier.
slow-twitch muscle fibres
fast-twitch muscle fibres
Equal proportions
Radom proportion as fertilisation is random
Which is the highest proportion in the legs of a sprinter
slow-twitch muscle fibres
fast-twitch muscle fibres
Equal proportions
Radom proportion as fertilisation is random
Which is the highest proportion in the muscles of a weight lifter
slow-twitch muscle fibres
fast-twitch muscle fibres
Equal proportions
Radom proportion as fertilisation is random
