LSUE BIOLOGY 1001 PRACTICE TEST 2026
QUESTIONS WITH CORRECT ANSWERS
◉ A drug is tested in the laboratory and is found to create holes in
both mitochondrial membranes. Scientists suspect that the drug will
be harmful to human cells because it will inhibit a. the citric acid
cycle.
b. oxidative phosphorylation.
c. glycolysis.
d. the citric acid cycle and oxidative phosphorylation. Answer: The
citric acid cycle and oxidative phosphorylation
◉ Pyruvate Answer: Forms at the end of glycolysis
◉ The label on the box of breakfast cereal lists one serving as
containing "200 calories" per serving. How many calories are
actually in one serving? a. 20
b. 2,000
c. 200,000
d. 2,000,000 Answer: 200,000
◉ Which of the following organisms can make organic molecules
from water and carbon dioxide? a. bear
,b. mushroom
c. wheat
d. crayfish Answer: Wheat
◉ When proteins are used as a source of energy fr the body, the
proteins. a. are converted into glucose molecules, which are fed into
glycolysis.
b. are converted mainly into intermediates of glycolysis or the citric
acid cycle.
c. are hydrolyzed to their constituent amino acids; electrons are
stripped from the amino acids and passed to the electron transport
chain.
d. are hydrolyzed to glucose and converted to acetyl CoA, which
enters the citric acid cycle. Answer: Are converted mainly into
intermediates of glycolysis or the citric acid cycle
◉ A culture of bacteria growing aerobically is fed glucose containing
radioactive carbon and is then examined. During the citric acid cycle,
radioactivity would first appear in Answer: Citrate
◉ Humans use the calories they obtain from _____ as their source of
energy Answer: Food
◉ The conversion of CO2 and H@O into organic compounds using
energy from light is called Answer: Photosynthesis
,◉ During cellular respiration, NADH Answer: Delivers its electron
load to the first electron carrier molecule
◉ Which of the following statements regarding the chemical
grooming of pyruvate is false Answer: Each pyruvate molecule has a
CO2 added and then joins with an NADH
◉ As a scientist employed by the FDA, you've been asked to sit on a
panel to evaluate a pharmaceutical company's application for
approval of a new weight loss drug called Fat Away. The company
has submitted a report summarizing the results of their animal and
human testing. In the report, it was noted that Fat Away works by
affecting the electron transport chain. It decreases the synthesis of
ATP by making the mitochondrial membrane permeable to H+,
which allows H+ to leak from the intermembrane space to the
mitochondrial matrix. This effect leads to weight loss.
Fat Away prevents ATP from being made by Answer: Destroying the
H+ gradient that allows ATP synthase to work
◉ After glycolysis but before the citric acid cycle Answer: Pyruvate is
oxidized
, ◉ The mitochondrial cristae are an adaptation that a. permits the
expansion of mitochondria as oxygen accumulates in the
mitochondrial matrix.
b. helps mitochondria divide during times of greatest cellular
respiration.
c. increases the space for more copies of the electron transport chain
and ATP synthase complexes.
d. carefully encloses the DNA housed within the mitochondrial
matrix. Answer: Increases the space for more copies of the electron
transport chain and ATP synthase complexes
◉ Which of the following colors contributes the least energy to
photosynthesis? Answer: Green
◉ Carbon fixation Answer: Occurs when carbon atoms from CO2 are
incorporated into an organic molecule
◉ Ozone Answer: Protects Earth from UV radiation
◉ Photoautotrophs Answer: Produces organic molecules from
inorganic molecule
◉ To produce one glucose, the Calvin cycle needs to be run through
_____ times Answer: Six
QUESTIONS WITH CORRECT ANSWERS
◉ A drug is tested in the laboratory and is found to create holes in
both mitochondrial membranes. Scientists suspect that the drug will
be harmful to human cells because it will inhibit a. the citric acid
cycle.
b. oxidative phosphorylation.
c. glycolysis.
d. the citric acid cycle and oxidative phosphorylation. Answer: The
citric acid cycle and oxidative phosphorylation
◉ Pyruvate Answer: Forms at the end of glycolysis
◉ The label on the box of breakfast cereal lists one serving as
containing "200 calories" per serving. How many calories are
actually in one serving? a. 20
b. 2,000
c. 200,000
d. 2,000,000 Answer: 200,000
◉ Which of the following organisms can make organic molecules
from water and carbon dioxide? a. bear
,b. mushroom
c. wheat
d. crayfish Answer: Wheat
◉ When proteins are used as a source of energy fr the body, the
proteins. a. are converted into glucose molecules, which are fed into
glycolysis.
b. are converted mainly into intermediates of glycolysis or the citric
acid cycle.
c. are hydrolyzed to their constituent amino acids; electrons are
stripped from the amino acids and passed to the electron transport
chain.
d. are hydrolyzed to glucose and converted to acetyl CoA, which
enters the citric acid cycle. Answer: Are converted mainly into
intermediates of glycolysis or the citric acid cycle
◉ A culture of bacteria growing aerobically is fed glucose containing
radioactive carbon and is then examined. During the citric acid cycle,
radioactivity would first appear in Answer: Citrate
◉ Humans use the calories they obtain from _____ as their source of
energy Answer: Food
◉ The conversion of CO2 and H@O into organic compounds using
energy from light is called Answer: Photosynthesis
,◉ During cellular respiration, NADH Answer: Delivers its electron
load to the first electron carrier molecule
◉ Which of the following statements regarding the chemical
grooming of pyruvate is false Answer: Each pyruvate molecule has a
CO2 added and then joins with an NADH
◉ As a scientist employed by the FDA, you've been asked to sit on a
panel to evaluate a pharmaceutical company's application for
approval of a new weight loss drug called Fat Away. The company
has submitted a report summarizing the results of their animal and
human testing. In the report, it was noted that Fat Away works by
affecting the electron transport chain. It decreases the synthesis of
ATP by making the mitochondrial membrane permeable to H+,
which allows H+ to leak from the intermembrane space to the
mitochondrial matrix. This effect leads to weight loss.
Fat Away prevents ATP from being made by Answer: Destroying the
H+ gradient that allows ATP synthase to work
◉ After glycolysis but before the citric acid cycle Answer: Pyruvate is
oxidized
, ◉ The mitochondrial cristae are an adaptation that a. permits the
expansion of mitochondria as oxygen accumulates in the
mitochondrial matrix.
b. helps mitochondria divide during times of greatest cellular
respiration.
c. increases the space for more copies of the electron transport chain
and ATP synthase complexes.
d. carefully encloses the DNA housed within the mitochondrial
matrix. Answer: Increases the space for more copies of the electron
transport chain and ATP synthase complexes
◉ Which of the following colors contributes the least energy to
photosynthesis? Answer: Green
◉ Carbon fixation Answer: Occurs when carbon atoms from CO2 are
incorporated into an organic molecule
◉ Ozone Answer: Protects Earth from UV radiation
◉ Photoautotrophs Answer: Produces organic molecules from
inorganic molecule
◉ To produce one glucose, the Calvin cycle needs to be run through
_____ times Answer: Six
