BIO 101 EXAM 2 NVCC EXAMPREP 2026
100 REAL TESTED QUESTIONS AND FULL
SOLUTIONS
⩥ A scientist observes that when she opens the back door of her house to
let her cat out, the songs of a certain species of bird abruptly change. She
wants to follow up on her observations with an informal experiment.
Which of the following is the best hypothesis for explaining the birds'
song changes? Answer: The bird species switches from song to warning
call whenever it sees a potential predator.
⩥ The attempt to disprove a hypothesis is accomplished by which of the
following tasks? Answer: conducting experiments
⩥ A scientist wishes to test a new antibiotic's ability to treat stubborn
bacterial infections. He tests his hypothesis that the antibiotic works
better than existing treatments by giving bacterial infections to mice and
treating them with the antibiotic. He then determines how many of the
mice recover from their infections. What is missing from his
experimental design? Answer: He is missing a control group of mice that
did not receive the new antibiotic.
⩥ A scientist believes that she has found a new life form. Which of the
following conditions is not considered essential in determining whether
the putative new life form is alive? Answer: The creature's body is
bilaterally symmetrical.
,⩥ Which of the following lists correctly presents levels of organization
from simplest to most complex? Answer: molecules, cells, populations,
ecosystems
⩥ An "educated guess" as to what causes an observed phenomenon is
known as a: Answer: hypothesis
⩥ Why are theories stronger and more reliable than hypotheses?
Answer: because they are based on many experimentally tested
hypotheses
⩥ Biologists have organized the diversity of life into three domains
based largely on Answer: molecular data.
⩥ The domain Eukarya includes all of the following except Answer:
Archaea.
⩥ A phylogenetic tree Answer: all of these
⩥ Which of the following is not a feature of scientific hypotheses?
Answer: They are unable to be falsified.
, ⩥ The advantage of controlled experiments is that Answer: all variables
are held constant except for one.
⩥ Which of the following statements represents a scientific point of
view? Answer: Testing the effect of antibiotics on E. coli can help
prevent deaths from food poisoning.
⩥ Which of the following questions cannot be answered by means of the
hypothetico-deductive method? Answer: Are red roses more beautiful
than yellow roses?
⩥ Overfishing of the western bluefin tuna in the Gulf of Mexico
breeding ground resulted in a serious decline in the population. Fishing
quotas were established in the Gulf of Mexico to allow the endangered
population to recover. Why did this policy fail to achieve the desired
result? Answer: Western and eastern populations of bluefin feed
throughout the entire North Atlantic.
⩥ Who is credited with founding the scientific method? Answer: Francis
Bacon
⩥ Prokaryotes Answer: lack organelles.
⩥ Extremophiles largely belong to the domain Answer: Archaea
100 REAL TESTED QUESTIONS AND FULL
SOLUTIONS
⩥ A scientist observes that when she opens the back door of her house to
let her cat out, the songs of a certain species of bird abruptly change. She
wants to follow up on her observations with an informal experiment.
Which of the following is the best hypothesis for explaining the birds'
song changes? Answer: The bird species switches from song to warning
call whenever it sees a potential predator.
⩥ The attempt to disprove a hypothesis is accomplished by which of the
following tasks? Answer: conducting experiments
⩥ A scientist wishes to test a new antibiotic's ability to treat stubborn
bacterial infections. He tests his hypothesis that the antibiotic works
better than existing treatments by giving bacterial infections to mice and
treating them with the antibiotic. He then determines how many of the
mice recover from their infections. What is missing from his
experimental design? Answer: He is missing a control group of mice that
did not receive the new antibiotic.
⩥ A scientist believes that she has found a new life form. Which of the
following conditions is not considered essential in determining whether
the putative new life form is alive? Answer: The creature's body is
bilaterally symmetrical.
,⩥ Which of the following lists correctly presents levels of organization
from simplest to most complex? Answer: molecules, cells, populations,
ecosystems
⩥ An "educated guess" as to what causes an observed phenomenon is
known as a: Answer: hypothesis
⩥ Why are theories stronger and more reliable than hypotheses?
Answer: because they are based on many experimentally tested
hypotheses
⩥ Biologists have organized the diversity of life into three domains
based largely on Answer: molecular data.
⩥ The domain Eukarya includes all of the following except Answer:
Archaea.
⩥ A phylogenetic tree Answer: all of these
⩥ Which of the following is not a feature of scientific hypotheses?
Answer: They are unable to be falsified.
, ⩥ The advantage of controlled experiments is that Answer: all variables
are held constant except for one.
⩥ Which of the following statements represents a scientific point of
view? Answer: Testing the effect of antibiotics on E. coli can help
prevent deaths from food poisoning.
⩥ Which of the following questions cannot be answered by means of the
hypothetico-deductive method? Answer: Are red roses more beautiful
than yellow roses?
⩥ Overfishing of the western bluefin tuna in the Gulf of Mexico
breeding ground resulted in a serious decline in the population. Fishing
quotas were established in the Gulf of Mexico to allow the endangered
population to recover. Why did this policy fail to achieve the desired
result? Answer: Western and eastern populations of bluefin feed
throughout the entire North Atlantic.
⩥ Who is credited with founding the scientific method? Answer: Francis
Bacon
⩥ Prokaryotes Answer: lack organelles.
⩥ Extremophiles largely belong to the domain Answer: Archaea
