BIO111
Biology Laboratory
MIDTERM READINESS EXAM
Q&S
©2024/2025
,1. Multiple Choice: Which of the following is not a
component of the cellular membrane?
a) Phospholipids
b) Cholesterol
c) Glycoproteins
d) Hemoglobin
Correct Answer: d) Hemoglobin
Rationale: Hemoglobin is a component of red blood cells,
not the cellular membrane.
2. Fill-in-the-Blank: The process by which water moves
across a semipermeable membrane is called __________.
Correct Answer: Osmosis
Rationale: Osmosis is the movement of water across a
semipermeable membrane from an area of lower solute
concentration to an area of higher solute concentration.
3. True/False: Mitochondria are the only organelles that
contain their own DNA.
Correct Answer: False
Rationale: Mitochondria and chloroplasts both contain
their own DNA.
4. Multiple Response: Select all that apply. Which of the
following are functions of proteins in the cellular
membrane?
a) Transport
b) Enzymatic activity
c) Signal transduction
d) Cell-cell recognition
e) Intercellular joining
f) Attachment to the cytoskeleton and extracellular matrix
©2024/2025
, Correct Answers: a), b), c), d), e), f)
Rationale: All listed options are functions of membrane
proteins.
5. Multiple Choice: What is the primary function of the
nucleolus?
a) DNA replication
b) Ribosomal RNA synthesis
c) Protein sorting
d) Mitosis
Correct Answer: b) Ribosomal RNA synthesis
Rationale: The nucleolus is primarily involved in the
synthesis of ribosomal RNA.
6. Fill-in-the-Blank: Proteins that bind to specific sequences
of DNA and control the rate of transcription are called
__________.
Correct Answer: Transcription factors
Rationale: Transcription factors are proteins that bind to
specific DNA sequences to control the transcription of
genetic information from DNA to messenger RNA.
7. True/False: All enzymes increase the activation energy
needed for a chemical reaction.
Correct Answer: False
Rationale: Enzymes actually lower the activation energy
needed for a chemical reaction, thereby speeding up the
reaction.
8. Multiple Response: Select all that apply. Which stages of
cell division involve the separation of sister chromatids?
a) Prophase
b) Metaphase
©2024/2025
Biology Laboratory
MIDTERM READINESS EXAM
Q&S
©2024/2025
,1. Multiple Choice: Which of the following is not a
component of the cellular membrane?
a) Phospholipids
b) Cholesterol
c) Glycoproteins
d) Hemoglobin
Correct Answer: d) Hemoglobin
Rationale: Hemoglobin is a component of red blood cells,
not the cellular membrane.
2. Fill-in-the-Blank: The process by which water moves
across a semipermeable membrane is called __________.
Correct Answer: Osmosis
Rationale: Osmosis is the movement of water across a
semipermeable membrane from an area of lower solute
concentration to an area of higher solute concentration.
3. True/False: Mitochondria are the only organelles that
contain their own DNA.
Correct Answer: False
Rationale: Mitochondria and chloroplasts both contain
their own DNA.
4. Multiple Response: Select all that apply. Which of the
following are functions of proteins in the cellular
membrane?
a) Transport
b) Enzymatic activity
c) Signal transduction
d) Cell-cell recognition
e) Intercellular joining
f) Attachment to the cytoskeleton and extracellular matrix
©2024/2025
, Correct Answers: a), b), c), d), e), f)
Rationale: All listed options are functions of membrane
proteins.
5. Multiple Choice: What is the primary function of the
nucleolus?
a) DNA replication
b) Ribosomal RNA synthesis
c) Protein sorting
d) Mitosis
Correct Answer: b) Ribosomal RNA synthesis
Rationale: The nucleolus is primarily involved in the
synthesis of ribosomal RNA.
6. Fill-in-the-Blank: Proteins that bind to specific sequences
of DNA and control the rate of transcription are called
__________.
Correct Answer: Transcription factors
Rationale: Transcription factors are proteins that bind to
specific DNA sequences to control the transcription of
genetic information from DNA to messenger RNA.
7. True/False: All enzymes increase the activation energy
needed for a chemical reaction.
Correct Answer: False
Rationale: Enzymes actually lower the activation energy
needed for a chemical reaction, thereby speeding up the
reaction.
8. Multiple Response: Select all that apply. Which stages of
cell division involve the separation of sister chromatids?
a) Prophase
b) Metaphase
©2024/2025
