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Summative Assessment Revision G12 Flashcards | StudBud
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Summative Assessment Revision G12
Summative Assessment Revision G12
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Flashcards
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Questions
17
Answers
1
ADP is phosphorylated and NADP is reduced during non-cyclic photophosphorylation.
False
True
2
Which of the following is true about acetyl coA?
It combines with CO2 to form pyruvate.
It combines with oxaloacetate to form citrate.
It combines with RuBP with the help of rubisco.
It combines O2 to form water.
3
Which regions of plant cells are protons pumped into to produce ATP?
chloroplast stroma and mitochondrial matrix
chlroplast stroma and mitochondrial intermembrane space
thylakoid space and mitochondrial matrix
thylakoid space and mitochondrial intermembrane space
4
What event happens following photolysis?
CO2 combines with RuBP to form an unstable 6-carbon compound
electrons from H atom replaces electrons released from photosystem 1
electrons from H atom replaces electrons released from photosystem 2
1 water molecule is split into 2H+ , 2e-, and 1 oxygen molecule
5
Gluconeogenesis is stimulated in response to high amount of insulin secretion.
True
False
6
Which event does
not
take place in the matrix of the mitochondria?
ATP is made by subsrate-level phosphorylation
oxidation of NADH
pyruvate is decarboxylated and dehydrogenated
oxaloacetate is regenerated
7
Which is
not
true about the role of the bundle sheath cells in C4 plants?
No RuBP is wasted.
It helps maintain high concentration of CO2 when stomata are closed.
Oxygen does not react with rubisco.
It helps avoid photorespiration.
8
Which of the following is
not
a function of the cerebrum?
memory
coordination
hearing
emotion
9
PEP carboxylase catalyses the reaction between carbon dioxide and RuBP.
False
True
10
Which photosynthetic pigment peaks its absorption at a lower wavelength of light only?
myoglobin
chlorophyll b
chlorophyll a
carotenoids
11
What makes lactic acid fermentation differ from alcoholic fermentation?
It is a reversible reaction.
It involves both pyruvate and NADH.
It has more ATP produced.
It produces CO2.
12
Which is true about
cyclic
photophosphorylation?
Electrons remain at a low energy level.
It involves photosystem 2.
Light energy is absorbed by chlorophyll a at a reaction center.
NADP is reduced.
13
What happens during the Krebs cycle for one molecule of pyruvate?
6 NAD is reduced and 2 ATP is produced.
3 CO2 , 2 FADH2 and 1 ATP is produced.
2 CO2, 3 NADH and 2 ATP is produced.
3 NAD is reduced and 1 ATP is produced.
14
Which plant growth regulator is known as the stress hormone? e.g. stomatal closure during dry conditions
gibberellin
auxin
abscisic acid (ABA)
ethylene
15
Which of the following is a consequence of auxin binding to its receptor in plant cells?
influx of potassium ions into the cell
an increase in pH in the cell wall
plant cells become flaccid
inhibition of the enzyme expansin
16
In answering questions for the Biology summative assessment, semantic memory should be at work.
True
False
17
The ff: are events taking place after the immediate release of a high concentration of insulin into the blood EXCEPT
increase in number of glucose transporters
glycogenesis
G protein activation
gluconeogenesis
