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Grade 12 Biology Exam Review
Grade 12 Biology Exam Review
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biology review
Flashcards
50 cards
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Practice quiz
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Questions
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Answers
1
Which of the following does not involve ATP production?
Glycolysis
Light Dependant Reactions
Oxidative phosphorylation
Calvin Cycle
2
What process is not directly associated with the molecule pictured?
Mutation
Replication
Translation
Transcription
3
What macromolecules are NOT found in cell membranes?
nucleic acids
carbohydrates
lipids
proteins
4
Why are they doomed?
Lactic acid production will exceed lactation.
Dirty diaper smell cannot diffuse across the membrane.
NADH and FADH2 will not be produced.
O2 will not act as an electron acceptor in ATP production.
5
What bond joins a fatty acid to glycerol to form a monoglyceride?
ether
ester
peptide
phosphodiester
6
What part of the nervous system is pictured?
saltatory conduction
glial cell
sodium/potassium pump
synapse
7
Where does the positive charge accumulate in the photosynthetic light reactions?
in the stroma
in the thylakoid discs
in the matrix
in the cytosol
8
What is the role of cholesterol in the cell membrane?
cholesterol helps maintain the fluidity of the cell membrane
cholesterol allows ions to diffuse into the cell
cholesterol plays a role in cell recognition
cholesterol helps create a barrier to foreign material
9
What part of the mitochondrion is responsible for chemical reactions using embedded proteins?
mitochondrial DNA
cristae
mitochondrial matrix
intermembrane space
10
This protein is an enzyme that has denatured. What has changed?
the tertiary structure of the protein
hydrogen bonds in the molecule
all answers are correct
the active site of the enzyme
11
How many ATP does each molecule of glucose produce during aerobic cellular respiration?
36
52
24
4
12
Which of the following does NOT apply to protein hormones?
triggers secondary messenger in target cell
relatively fast response in target cell
insulin and glucagon
diffuses into target cell
13
What process is pictured in this diagram?
aerobic respiration
glycolysis
fermentation
pyruvate oxidation
14
Which of the following is not associated with lipids?
Membranes
Enzymes
Energy
Steroids
15
What does this enzyme synthesize?
ATP
Oxygen
an H+ gradient
ATP and NADPH
16
What molecule is always created by the dehydration synthesis of two macromolecules?
an ether bond
water
a monomer
carbon dioxide
17
How is amino-acyl tRNA created?
the anticodon on tRNA matches the codon on mRNA
tRNA joins to the A-site of the ribosome
an enzyme binds an amino acid to the 3' end of tRNA
an enzyme releases tRNA from the E-site of the ribosome
18
What does this diagram show?
saltatory conduction in a neuron
depolarization of a neuron
neuron inhibition
an action potential in a neuron
19
Examine the population graphs. What organism exceeded its carrying capacity?
Paramecia
both organisms
Daphnia
neither organism
20
What is the term for the fluid inside the thylakoid discs of the chloroplast?
thlakoid membrane
stroma
granum
thylakoid space (lumen)
21
What happens to an plant cell placed in a solution with a higher [solute] than the cytosol?
the cell will plasmolyze
the cell will shrivel
the cell will become turgid
the cell will burst
22
During DNA replication, ssB's prevent the separated strands of DNA from re-annealing.
FALSE
TRUE
23
What type of enzyme removes electrons and protons from NADH?
dehydrogenase
dehydrase
decarboxylase
phosphorylase
24
What is symbiosis?
a form of resource partitioning
a process in which lactic acid is converted to pyruvate
a relationship between individual species
two species occupying similar niches
25
How many G3P are produced in the Calvin cycle with an input of 6 RuBP and 6 CO
2
?
3
2
1
4
26
Which of the following statements about the endoplasmic reticulum is FALSE?
rough ER produces proteins
smooth ER produces lipids
ER produces vesicles for exocytosis
ER is attached to the nuclear membrane
27
What process is pictured?
catabolism
anabolism
enzyme inhibition
enzyme activation
28
This species is no longer found in Canada but is still found in the USA. It is...
vulnerable
endangered
extinct
extirpated
29
How many net molecules of ATP are produced per glucose during glycolysis?
4
36
2
6
30
Photosystem I and II are used to produce what molecules?
ATP and water
ATP, NADH and FADH2
ATP and NADPH
ATP and NADH
31
What enzyme removes introns from mRNA?
5' cap
spliceosomes
aminoacyl-tRNA synthase
DNA polymerase III
32
What process is pictured in the diagram?
cellular respiration
glycolysis
pyruvate oxidation
fermentation
33
What molecule transcribes DNA?
RNA polymerase
DNA polymerase III
ATP synthase
DNA ligase
34
What macromolecule does not belong?
phospholipid
starch
cellulose
glycogen
35
What process is being shown in the diagram?
Transcription
Translation
RNA Synthesis
DNA Replication
36
If the semipermeable sac is placed in the beaker solution, what will happen?
water will diffuse into the sac due to hypotonic solution
water will diffuse into the sac due to hypertonic solution
water will diffuse out of the sac due to hypotonic solution
water will diffuse out of the sac due to hypertonic solution
37
What process is aerobic (requires oxygen)?
glycolysis
the electron transport system in chloroplasts
the electron transport chain in mitochondria
the Calvin cycle
38
When is insulin released?
when blood sugar levels rise after a meal
when the hypothalamus signals the pancreas
when the pancreas detects low blood sugar
when you are dehydrated
39
Which of the following BEST describes the process shown?
Osmosis
Active Transport
Facilliated Diffusion
Passive Transport
40
What process is not associated with photosynthesis?
Calvin Cycle
Kreb's Cycle
Photophosphorylation
Photolysis
41
What is the final electron acceptor in a non-cyclic photophosphorylation reaction?
NADP+
plastoquinone
O2
ADP
42
In cell respiration, what causes the electrochemical gradient?
the accumulation of H+ in the inter membrane space
the removal of electrons from NADH
the lysis of H2O
ATP synthesis
43
What is NOT being produced during photosynthesis?
Oxygen
ATP
Glucose
NADH
44
What is biology?
more fun than the Leviathan at Canada's Wonderland
the science of life
a science that is continually evolving and changing
the key to understanding your role in the universe
45
What type of cell is most likely to use phagocytosis?
white blood cells
islets of Langerhans cells
neurons
red blood cells
46
Saturated fatty acids
are joined to glycerol with a glycosidic linkage
contain single covalent bonds between carbon atoms
contain double or triple covalent bonds between carbon atoms
are liquid at room temperature
47
When an action potential occurs in a myelinated neuron, Na
+
inside the axon causes
repolarization at the adjacent node of Ranvier.
depolarization at the adjacent region of the membrane.
hyperpolarization of the post-synaptic neuron.
depolarization at the adjacent node of Ranvier.
48
Where in the nephron is glucose reabsorbed?
descending loop of Henle
ascending loop of Henle
collecting duct
proximal tubule
49
What type of bond is being created in this process?
Glycosidic Linkage
Peptide Bond
Ester linkage
Phosphodiester Bond
50
How is glucose transported from blood into cells?
endocytosis
active transport
facilitated diffusion
osmosis
