1|Page
STRAIGHTERLINE BIO 101 FINAL PRACTICE
EXAM 2026 ALL QUESTIONS AND CORRECT
DETAILED ANSWERS|RATED A+ |HIGHLY
RECOMMENDED BY EXPERTS |NEW AND
REVISED
Which of the following reactions is most likely to occur if an individual
was to ingest a large dose of lemon juice? - ANSWER- there would be
an increase in the about of carbonic acid within the bloodstream. If the
carbonic acid didn't form, then the ph of the individual's blood could
shift toward 7.2
In the search to discover the agents that cause mad cow disease, scrapie
in sheep, and CJD and kuru in humans, diseased brain tissues were
passed through a fine filter to remove bacteria. The filtrate was still
infectious, indicating that something smaller than bacteria, either viruses
or organic molecules, must be the causative agent. If a virus was
responsible for these brain diseases, then the infectious agent would
contain either RNA or DNA. Other possibilities were that the agent was
a carbohydrate, fat, or protein. Tissue filtrates were treated with agents
that destroyed just one of these chemicals and then injected into a
healthy animal, with the results as follows. What is the infectious agent?
•Amylase digests carbohydrates; tissue filtrate still infects healthy test
animal.
•Lipase digests fats; tissue filtrate still infects healthy test animal.
•Formaldehyde and/or heat denatures DNA and RNA; tissue filtr -
ANSWER- protein
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Which is not a correct attribute of a metabolic pathway? - ANSWER- a
constant supply of new enzymes must be produces to keep the metabolic
pathway active
Whether or not an enzyme is active and present within a cell depends on
all of the following except - ANSWER- whether the enzyme catalyzes
an endergonic or exergonic reaction
The location in which the enzyme and substrate complexes is called the -
ANSWER- active site
Where within the cell is ATP built up? - ANSWER- mitochondria
Which of the following is a by-product of photosynthesis? - ANSWER-
oxygen
How efficient is the breakdown of one glucose via cellular respiration? -
ANSWER- 39%
Why does FADH2 result in fewer ATP than NADH + H+ - ANSWER-
FADH2 drops its electrons off lower on the electron transport chain
Why is cellular respiration organized into four phases? - ANSWER- so
that the energy within the glucose molecule can be released in a stepwise
fashion
,3|Page
How many NADH + H+ are produced by the citric acid cycle per turn? -
ANSWER- three
The final products of glycolysis are - ANSWER- 2 pyruvate, 2 ATP, and
2 NADH + H+
An acetyl group contains how many carbons? - ANSWER- two
The raw materials or reactants of the photosynthesis process include -
ANSWER- carbon dioxide and water
The calvin cycle reactions are dependent upon a supply of - ANSWER-
carbon dioxide, NADPH, and ATP
Photosynthesis shows higher activity for violet/blue and orange/red and
a lower absorption for green/yellow. If we could create a different
photosynthetic pigment that absorbed absolutely all visible wavelengths
of light, the leaves would appear which color? - ANSWER- black
How many total carbons are involved in carbon dioxide fixation with 3
molecules of carbon dioxide and 3 molecules of rubp? - ANSWER- 18
The substance that initially traps solar energy in photosynthesis is -
ANSWER- chlorophyll
, 4|Page
Which cofactor is involved in the Calvin cycle reactions? - ANSWER-
NADP+
During photosynthesis, solar energy is converted to chemical energy by
the chloroplasts. The process is represented by - ANSWER- solar energy
+ carbon dioxide + water --> carbohydrate + oxygen
In plants, chloroplasts are necessary for - ANSWER- photosynthesis
Cellular respiration is best associated with the - ANSWER-
mitochondrion
In a certain group of people, males are more subject to respiratory
infections and are sterile. The most likely explanation for this disease is
malfunctioning - ANSWER- cilia and flagella
When viewed through a microscope, one characteristic of living cells is
that their internal structures move. What organelles are most directly
responsible for this motion we see? - ANSWER- mitochrondria and
cytoskeleton
According to cell theory - ANSWER- new cells arise only from
preexisting cells
Which of the following cells were most likely the first type of cells on
earth? - ANSWER- archaea
STRAIGHTERLINE BIO 101 FINAL PRACTICE
EXAM 2026 ALL QUESTIONS AND CORRECT
DETAILED ANSWERS|RATED A+ |HIGHLY
RECOMMENDED BY EXPERTS |NEW AND
REVISED
Which of the following reactions is most likely to occur if an individual
was to ingest a large dose of lemon juice? - ANSWER- there would be
an increase in the about of carbonic acid within the bloodstream. If the
carbonic acid didn't form, then the ph of the individual's blood could
shift toward 7.2
In the search to discover the agents that cause mad cow disease, scrapie
in sheep, and CJD and kuru in humans, diseased brain tissues were
passed through a fine filter to remove bacteria. The filtrate was still
infectious, indicating that something smaller than bacteria, either viruses
or organic molecules, must be the causative agent. If a virus was
responsible for these brain diseases, then the infectious agent would
contain either RNA or DNA. Other possibilities were that the agent was
a carbohydrate, fat, or protein. Tissue filtrates were treated with agents
that destroyed just one of these chemicals and then injected into a
healthy animal, with the results as follows. What is the infectious agent?
•Amylase digests carbohydrates; tissue filtrate still infects healthy test
animal.
•Lipase digests fats; tissue filtrate still infects healthy test animal.
•Formaldehyde and/or heat denatures DNA and RNA; tissue filtr -
ANSWER- protein
,2|Page
Which is not a correct attribute of a metabolic pathway? - ANSWER- a
constant supply of new enzymes must be produces to keep the metabolic
pathway active
Whether or not an enzyme is active and present within a cell depends on
all of the following except - ANSWER- whether the enzyme catalyzes
an endergonic or exergonic reaction
The location in which the enzyme and substrate complexes is called the -
ANSWER- active site
Where within the cell is ATP built up? - ANSWER- mitochondria
Which of the following is a by-product of photosynthesis? - ANSWER-
oxygen
How efficient is the breakdown of one glucose via cellular respiration? -
ANSWER- 39%
Why does FADH2 result in fewer ATP than NADH + H+ - ANSWER-
FADH2 drops its electrons off lower on the electron transport chain
Why is cellular respiration organized into four phases? - ANSWER- so
that the energy within the glucose molecule can be released in a stepwise
fashion
,3|Page
How many NADH + H+ are produced by the citric acid cycle per turn? -
ANSWER- three
The final products of glycolysis are - ANSWER- 2 pyruvate, 2 ATP, and
2 NADH + H+
An acetyl group contains how many carbons? - ANSWER- two
The raw materials or reactants of the photosynthesis process include -
ANSWER- carbon dioxide and water
The calvin cycle reactions are dependent upon a supply of - ANSWER-
carbon dioxide, NADPH, and ATP
Photosynthesis shows higher activity for violet/blue and orange/red and
a lower absorption for green/yellow. If we could create a different
photosynthetic pigment that absorbed absolutely all visible wavelengths
of light, the leaves would appear which color? - ANSWER- black
How many total carbons are involved in carbon dioxide fixation with 3
molecules of carbon dioxide and 3 molecules of rubp? - ANSWER- 18
The substance that initially traps solar energy in photosynthesis is -
ANSWER- chlorophyll
, 4|Page
Which cofactor is involved in the Calvin cycle reactions? - ANSWER-
NADP+
During photosynthesis, solar energy is converted to chemical energy by
the chloroplasts. The process is represented by - ANSWER- solar energy
+ carbon dioxide + water --> carbohydrate + oxygen
In plants, chloroplasts are necessary for - ANSWER- photosynthesis
Cellular respiration is best associated with the - ANSWER-
mitochondrion
In a certain group of people, males are more subject to respiratory
infections and are sterile. The most likely explanation for this disease is
malfunctioning - ANSWER- cilia and flagella
When viewed through a microscope, one characteristic of living cells is
that their internal structures move. What organelles are most directly
responsible for this motion we see? - ANSWER- mitochrondria and
cytoskeleton
According to cell theory - ANSWER- new cells arise only from
preexisting cells
Which of the following cells were most likely the first type of cells on
earth? - ANSWER- archaea
