Bio 101
Bio 101 Final- StraighterLine Exam
Questions and Answers 2025
You are most likely to see hag fish, sperm whales, and viperfish inhabiting which of the
following zones of the ocean?
a. abyssal
b. bathypelagic
c. epipelagic
d. mesopelagic - ANSWERS-bathypelagic
What was the first seed plant to appear?
a. angiosperm
b. bryophytes
c. gymnosperm
d. nonvascular plants - ANSWERS-gymnosperm
In a pedigree for an autosomal recessive disorder, which of the following will occur if
two homozygous unaffected individuals mate?
a. They will have affected offspring.
b. They will have unaffected offspring.
c. Cannot be determined based on the information given.
d. There is a 25% chance they will have affected offspring. - ANSWERS-They will have
unaffected offspring.
1|Page
,Bio 101
Both bacteria and archaea are which of the following types of organism?
a. eukaryotic
b. prokaryotic
c. nucleoplasmic
d. multicellular - ANSWERS-prokaryotic
Which of the following accurately describes transcriptional control of gene expression in
eukaryotes?
a. Activators trigger sequences of DNA transcription factors to be expressed
b. Dependent on interactions of mRNA sequences with ribosomes
c. Promoters help transcription factors bind to RNA polymerases
d. Transcription factors help RNA polymerase bind to promoter sequences - ANSWERS-
Transcription factors help RNA polymerase bind to promoter sequences
Based on their chemical equations, photosynthesis and cellular respiration have which of
the following relationships?
a. equivalent reactions
b. incomplete reactions
c. opposite reactions
d. unrelated reactions - ANSWERS-opposite reactions
Which of the following parts of a plant seed turns into the root system?
2|Page
,Bio 101
a. cotyledon
b. epicotyl
c. hypocotyl
d. radicle - ANSWERS-radicle
Which of the following equations is often used to show that an enzyme has formed a
complex with its substrate?
Select one:
a. enzyme + product ⇒ substrate + enzyme ⇒ enzyme-substrate complex
b. enzyme + substrate ⇒ product + enzyme ⇒ enzyme-substrate complex
c. product + enzyme ⇒ enzyme-substrate complex ⇒ substrate + product
d. substrate + enzyme ⇒ enzyme-substrate complex ⇒ enzyme + product - ANSWERS-d.
substrate + enzyme ⇒ enzyme-substrate complex ⇒ enzyme + product
What type of muscle cell has branching, striated cells, each containing a single nucleus?
a. cardiac muscle
b. rough muscle
c. skeletal muscle
d. smooth muscle - ANSWERS-cardiac muscle
Which of the following cell structures is associated with cellular respiration?
a. Golgi apparatus
b. lysomes
c. mitochondria
3|Page
, Bio 101
d. vacuoles - ANSWERS-mitochondria
Male peacocks having more ornate plumage than their female counterparts is an
example of which of the following features of ecological behavior?
a. monogamy
b. sexual dimorphism
c. sexual selection
d. territoriality - ANSWERS-sexual dimorphism
Which organic molecule is composed of an amino group, a carboxylic acid group, and an
R group?
A. carbohydrate
B. phospholipid
C. amino acid
D. nucleotide - ANSWERS-amino acid
Which step of the photosynthesis pathway produces a carbohydrate from CO2 in the
atmosphere?
A. the light reactions
B. ATP production
C. the Calvin cycle
D. the C4 pathway - ANSWERS-the Calvin cycle
4|Page
Bio 101 Final- StraighterLine Exam
Questions and Answers 2025
You are most likely to see hag fish, sperm whales, and viperfish inhabiting which of the
following zones of the ocean?
a. abyssal
b. bathypelagic
c. epipelagic
d. mesopelagic - ANSWERS-bathypelagic
What was the first seed plant to appear?
a. angiosperm
b. bryophytes
c. gymnosperm
d. nonvascular plants - ANSWERS-gymnosperm
In a pedigree for an autosomal recessive disorder, which of the following will occur if
two homozygous unaffected individuals mate?
a. They will have affected offspring.
b. They will have unaffected offspring.
c. Cannot be determined based on the information given.
d. There is a 25% chance they will have affected offspring. - ANSWERS-They will have
unaffected offspring.
1|Page
,Bio 101
Both bacteria and archaea are which of the following types of organism?
a. eukaryotic
b. prokaryotic
c. nucleoplasmic
d. multicellular - ANSWERS-prokaryotic
Which of the following accurately describes transcriptional control of gene expression in
eukaryotes?
a. Activators trigger sequences of DNA transcription factors to be expressed
b. Dependent on interactions of mRNA sequences with ribosomes
c. Promoters help transcription factors bind to RNA polymerases
d. Transcription factors help RNA polymerase bind to promoter sequences - ANSWERS-
Transcription factors help RNA polymerase bind to promoter sequences
Based on their chemical equations, photosynthesis and cellular respiration have which of
the following relationships?
a. equivalent reactions
b. incomplete reactions
c. opposite reactions
d. unrelated reactions - ANSWERS-opposite reactions
Which of the following parts of a plant seed turns into the root system?
2|Page
,Bio 101
a. cotyledon
b. epicotyl
c. hypocotyl
d. radicle - ANSWERS-radicle
Which of the following equations is often used to show that an enzyme has formed a
complex with its substrate?
Select one:
a. enzyme + product ⇒ substrate + enzyme ⇒ enzyme-substrate complex
b. enzyme + substrate ⇒ product + enzyme ⇒ enzyme-substrate complex
c. product + enzyme ⇒ enzyme-substrate complex ⇒ substrate + product
d. substrate + enzyme ⇒ enzyme-substrate complex ⇒ enzyme + product - ANSWERS-d.
substrate + enzyme ⇒ enzyme-substrate complex ⇒ enzyme + product
What type of muscle cell has branching, striated cells, each containing a single nucleus?
a. cardiac muscle
b. rough muscle
c. skeletal muscle
d. smooth muscle - ANSWERS-cardiac muscle
Which of the following cell structures is associated with cellular respiration?
a. Golgi apparatus
b. lysomes
c. mitochondria
3|Page
, Bio 101
d. vacuoles - ANSWERS-mitochondria
Male peacocks having more ornate plumage than their female counterparts is an
example of which of the following features of ecological behavior?
a. monogamy
b. sexual dimorphism
c. sexual selection
d. territoriality - ANSWERS-sexual dimorphism
Which organic molecule is composed of an amino group, a carboxylic acid group, and an
R group?
A. carbohydrate
B. phospholipid
C. amino acid
D. nucleotide - ANSWERS-amino acid
Which step of the photosynthesis pathway produces a carbohydrate from CO2 in the
atmosphere?
A. the light reactions
B. ATP production
C. the Calvin cycle
D. the C4 pathway - ANSWERS-the Calvin cycle
4|Page
