BIOL 133 American Public University System -BIOL133
Exam 1 Questions | 2026/2027 | Answers Correct | With
Complete Solutions
___________ are used for energy storage. Correct Answers
Triglycerides
_________________ prevent material from moving in or out of
the brain's capillaries Correct Answers Tight junctions
5,1,3,2,4,6Place the steps of the scientific method in order from
beginning to end.
1) Form a hypothesis
2) Analyze the results
3) Perform the experiment
4) Form a conclusion
5) Make an observation
6) Support or reject the hypothesis Correct Answers 5,1,3,2,4,6
A decrease in blood water levels is detected in the brain. The
brain sends signals to the pituitary gland to release hormones
that communicate with the kidney to reabsorb water, which will
increase blood water levels. This represents what life property?
Correct Answers Homeostasis
After 11,200 years, approximately _____________________
carbon-14 would remain in a sample of wood. Correct Answers
25%
After many years of difficult research, your company invented a
drug that increases the enzyme rate for the synthesis of an
, important metabolite. Patients with mutations in the enzyme
lack the metabolite and have devastating symptoms. Your team
is thrilled to have a drug that speeds up the enzymatic rate.
At your celebration, the new intern pipes up: "You guys didn't
have to do all that work after all! Instead of giving patients this
new drug, you could have just given them the metabolite
directly."
Your response? Correct Answers Each enzyme can catalyze
multiple reactions. It is not feasible to provide enough of the
metabolite to each cell directly.
An experiment tested the health effects of a nutritional
supplement by the following procedure:
People were asked to choose to join the experimental group or
the control group. People in the experimental group were given
the supplement added to a pink, strawberry-flavored drink.
People in the control group were given a glass of water. One
hour later, the people were asked "Do you feel better?"
How would you improve the experimental protocol? (Select all
necessary changes.) Correct Answers *People should be
randomly assigned to one group or the other.
*The drinks should both look and taste the same.
*The assessment should measure something more specific, such
as blood pressure.
At a meal, you are served a hamburger with cheese, onions, and
beef on a bun. What ingredients represent the most
carbohydrates? Select all that apply. Correct Answers * bun
* onion
Exam 1 Questions | 2026/2027 | Answers Correct | With
Complete Solutions
___________ are used for energy storage. Correct Answers
Triglycerides
_________________ prevent material from moving in or out of
the brain's capillaries Correct Answers Tight junctions
5,1,3,2,4,6Place the steps of the scientific method in order from
beginning to end.
1) Form a hypothesis
2) Analyze the results
3) Perform the experiment
4) Form a conclusion
5) Make an observation
6) Support or reject the hypothesis Correct Answers 5,1,3,2,4,6
A decrease in blood water levels is detected in the brain. The
brain sends signals to the pituitary gland to release hormones
that communicate with the kidney to reabsorb water, which will
increase blood water levels. This represents what life property?
Correct Answers Homeostasis
After 11,200 years, approximately _____________________
carbon-14 would remain in a sample of wood. Correct Answers
25%
After many years of difficult research, your company invented a
drug that increases the enzyme rate for the synthesis of an
, important metabolite. Patients with mutations in the enzyme
lack the metabolite and have devastating symptoms. Your team
is thrilled to have a drug that speeds up the enzymatic rate.
At your celebration, the new intern pipes up: "You guys didn't
have to do all that work after all! Instead of giving patients this
new drug, you could have just given them the metabolite
directly."
Your response? Correct Answers Each enzyme can catalyze
multiple reactions. It is not feasible to provide enough of the
metabolite to each cell directly.
An experiment tested the health effects of a nutritional
supplement by the following procedure:
People were asked to choose to join the experimental group or
the control group. People in the experimental group were given
the supplement added to a pink, strawberry-flavored drink.
People in the control group were given a glass of water. One
hour later, the people were asked "Do you feel better?"
How would you improve the experimental protocol? (Select all
necessary changes.) Correct Answers *People should be
randomly assigned to one group or the other.
*The drinks should both look and taste the same.
*The assessment should measure something more specific, such
as blood pressure.
At a meal, you are served a hamburger with cheese, onions, and
beef on a bun. What ingredients represent the most
carbohydrates? Select all that apply. Correct Answers * bun
* onion
