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BIOC 385 Final || with Accurate Answers 100%.
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All of the following are true of both chloroplasts and mitochondria Except that they correct answers produce NADPH inside the organelle The chloroplast contains a highly folded membrane called the correct answers thylakoid On excitation by a photon, a fate of the excited chlorophyll molecule ...

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  • August 20, 2024
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  • 2024/2025
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  • all of the following are true of both chloroplasts

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BIOC 385 Final || with Accurate Answers 100%.
All of the following are true of both chloroplasts and mitochondria Except that they correct
answers produce NADPH inside the organelle

The chloroplast contains a highly folded membrane called the correct answers thylakoid

On excitation by a photon, a fate of the excited chlorophyll molecule is to correct answers
transfer an electron to an acceptor molecule

Approximately how many light harvesting chomohphres are found per photosystem correct
answers about 100 to 200

The following picture is an example of what phenomenon? correct answers Resonance energy
transfer

The photosynthetic Z scheme describes the correct answers movement of electrons driven by the
absorption of light energy

What group in photosystem II (PSII) directly reacts with H2O during its light driven oxidation?
correct answers Oxygen evolving center

Which is NOT a correct analogy between the photosynthetic PQ cycle and the mitochondrial
electron transport chain Q cycle. correct answers Photosystem I is analogous to complex I.

In addition to the pumping of protons with the photosynthetic electron transport, what else
contributes to establishing a proton gradient? correct answers The formation of of O2 from two
H2O

The herbicide paraquat operates by stealing electrons from photosystem I (PSI). Which of the
following is true of the chloroplasts treated with paraquat? correct answers NADPH levels drop

Per O2 molecule generated in photosynthesis light reactions, approximately how many protons
are moved across the thylakoid membrane correct answers 12

Approximately how many ATP are synthesized per O2 molecule generated in photosynthesis
light reactions? correct answers 3

Which protein or enzyme in NOT involved in the cyclic photophosphrylation pathway correct
answers Photosystem II

In the chloroplasts, photosystem I (PSI) and photosystem II (PSII) are known to localize in
different regions. PSI generally localizes in the _____________, whereas PSII localizes in the
_____________. correct answers Thylakoid lamellae: thylakoid grana

,Why are Calvin cycle reactions also referred to as the dark reactions? correct answers They do
not absorb sunlight energy

Which of the following is true of stage 2 of the Calvin cycle? correct answers Almost all of the
NADPH and ATP from the light reactions are used in stage 2.

C4 plants are thought to be more efficient than C3 plants because they correct answers Can
concentrate the CO2 in chloroplasts and therefor minimize side reactions with O2.

Which cell type in C4 plants is isolated from O2 exposure as they perform Calvin cycle
reactions? correct answers bundle sheath cells

Glyoxylate cycle reactions shown below is catalyzed by which enzyme class? correct answers
Lyase

The glyoxylate cycle enzymes correct answers bypass the decarboxylation steps of the TCA
cycle, resulting in the net synthesis of sugar molecule from acetyl-CoA

Which glucose homopolymer would be used if a person had to sprint quickly correct answers
glycogen

Glycoconjugates are linked to proteins or lipids via correct answers covalent bonds

The growth rate of non-ruminating animals often decreases when they eat food contain
____________ because of the inability to digest it. correct answers raffinose

How are glycosaminoglycans attached to proteins? correct answers Covalent bonds

Compared with amylopectin, amylose has ___________ glycosidic bonds correct answers only
Alpha 1 ,4

if one homozygous parent expresses the GTA glycosyltransferase and te other homozygous
parent expresses the GTP glycosyltransferase, what is the probilbily of a child with blood type of
O? correct answers 25%

Compare with gram negative bacteria, gram positive bacteria have a correct answers thicker
peptidoglycan layer

Crystal violet stains Gram-Positive bacteria because Gram-positive bacteria ave a(n) correct
answers Thicker peptidoglycan layer that collapses, trapping the crystal violet molecules

Which enzyme is produced by penicillin-resistant bacteria? correct answers B-Lactamse

How is penicillin inactivated by penicillin-resistant bacteria? correct answers The B-lactam ring
in penicillin is hydrolyzed

, Penicilin kills bacteria by inhibiting the biosynthesis of the cell wall. How dose penicillin cause
the inhibition. correct answers The carbonyl carbon of the B-lactam ring of penicillin binds to
tranpeptidase

A B-elimination reaction is used in glycan characterization to correct answers Cleave the O-
linked glycans

In lectin array, how are lectin proteins attached to the solid support? correct answers Covalent
bonding

Arrays made with chemically synthesized glycans are used to investigate glycan-binding proteins
correct answers by comparing the affinity of lectins with structurally related glycan groups

The figure below is a fluorescent readout from lectin array. what can be deducted from B?
correct answers There is a glycan-lectin interaction in the well

The pentose phosphate pathway occurs in the correct answers cytoplasm

The pentose phosphate pathway correct answers Allows 5C sugars to converge with or diverge
from the glycolysis pathway

Which enezyme class catalyzes the following pentose phosphate pathway reaction (note that
therre may be some missing reactants and products) correct answers Oxidoreductase

What molecule activates the pentose phosphate pathway? correct answers NADP+

Which of the following metabolites is NOT a gluconeogenesis substrate in humans? correct
answers Acetate

Which pathway is opposite to gluconeogenesis? correct answers glycolysis pathway

In the reaction catalyzed by pyruvate carboxylase (the first reaction in gluconeogenesis) correct
answers Activated by ATP energy

The conversion of pyruvate to phophoenolpyruvate (PEP) in gluconeogenesis correct answers
Occurs in two steps and is catalyzed by the enzymes pyruvate carboxylase and
phosphoenolpyruvate carboxylkinase.

In the gluconeogenesis pathway, the enzyme glucose-6-phosphatase reverses which step in
glycolysis? correct answers The reaction catalyzed by hexokinase

Cytoplasmic levels of NADH must be maintained in order for gluconeogesis to occur. What
generates NADH for this pathway? correct answers The movement of NADH equivalents from
inside the mitochondria via malate transport

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