BIOL 204 LECTURE EXAM 2 PRACTICE
SCRIPT UPDATED 2026 TESTED SOLUTIONS
⫸ Which of the following are qualities of any good scientific
hypothesis?
I. It is testable.
II. It is falsifiable.
III. It produces quantitative data.
IV. It produces results that can be replicated. Answer: I. It is testable
II. It is falsifiable
⫸ Agrobacterium infects plants and causes them to form tumors. You
determine that tumor formation requires a large amount of the plant's
energy for tissue formation. How might this change the number of
offspring a plant produces, and what is the most likely explanation for
this change? Answer: The number of offspring should decrease because
the plant will divert energy from reproduction to tumor formation.
⫸ A heat-killed, phosphorescent (light-emitting) strain of bacteria is
mixed with a living, non-phosphorescent strain. Further observations of
the mixture show that some of the living cells are now phosphorescent.
Which of the following observations would provide the best evidence
that the ability to phosphoresce is a heritable trait? Answer:
phosphorescence in descendants of the living cells
, ⫸ Which of the following provides evidence of the common ancestry of
all life? Answer: near universality of the genetic code
⫸ Which of the following statements accurately describes the structure
of a eukaryotic chromosome? Answer: It is a single linear molecule of
double-stranded DNA plus proteins.
⫸ As letters are to English language, ________ is/are to genetic
information. Answer: nucleotides
⫸ You sequence the genome of a new plant. The new genome has
13.5% adenine. What will be the cytosine content? Answer: 36.5%
⫸ What name is given to the process in which a strand of mRNA is
constructed from a sequence of nucleotides on a DNA molecule?
Answer: transcription
⫸ What will be the translation of the following mRNA?
5'-GUUGCUGAUGGU-3' Answer: Val, Ala, Asp, Gly
⫸ The genetic code is essentially the same for all organisms. From this,
one can logically assume which of the following statements is most
accurate? Answer: A gene from an organism can theoretically be
expressed by any other organism.
SCRIPT UPDATED 2026 TESTED SOLUTIONS
⫸ Which of the following are qualities of any good scientific
hypothesis?
I. It is testable.
II. It is falsifiable.
III. It produces quantitative data.
IV. It produces results that can be replicated. Answer: I. It is testable
II. It is falsifiable
⫸ Agrobacterium infects plants and causes them to form tumors. You
determine that tumor formation requires a large amount of the plant's
energy for tissue formation. How might this change the number of
offspring a plant produces, and what is the most likely explanation for
this change? Answer: The number of offspring should decrease because
the plant will divert energy from reproduction to tumor formation.
⫸ A heat-killed, phosphorescent (light-emitting) strain of bacteria is
mixed with a living, non-phosphorescent strain. Further observations of
the mixture show that some of the living cells are now phosphorescent.
Which of the following observations would provide the best evidence
that the ability to phosphoresce is a heritable trait? Answer:
phosphorescence in descendants of the living cells
, ⫸ Which of the following provides evidence of the common ancestry of
all life? Answer: near universality of the genetic code
⫸ Which of the following statements accurately describes the structure
of a eukaryotic chromosome? Answer: It is a single linear molecule of
double-stranded DNA plus proteins.
⫸ As letters are to English language, ________ is/are to genetic
information. Answer: nucleotides
⫸ You sequence the genome of a new plant. The new genome has
13.5% adenine. What will be the cytosine content? Answer: 36.5%
⫸ What name is given to the process in which a strand of mRNA is
constructed from a sequence of nucleotides on a DNA molecule?
Answer: transcription
⫸ What will be the translation of the following mRNA?
5'-GUUGCUGAUGGU-3' Answer: Val, Ala, Asp, Gly
⫸ The genetic code is essentially the same for all organisms. From this,
one can logically assume which of the following statements is most
accurate? Answer: A gene from an organism can theoretically be
expressed by any other organism.
