BIOD 101 – General Biology with Lab
Modules 1–6 & Final Exam Complete
Verified Q&A Bundle
Portage Learning | Academic
Year
MODULE 1: The Scientific Method & Chemistry of Life
Question 1
In an experiment testing the effect of a new energy drink on heart rate, the heart rate
is measured. What is the role of the heart rate in this experiment?
A) Control group
B) Independent variable
C) Dependent variable
D) Controlled variable
Answer: C — The dependent variable is the outcome that is measured. The
independent variable is what is manipulated (the energy drink).
Question 2
A scientist observes that a specific type of bacteria grows faster in a dark environment
than in a light environment. Before concluding that darkness causes faster growth,
what must the scientist do?
A) Publish the results immediately
,B) Design a controlled experiment to test the hypothesis
C) Discard the observation as it cannot be proven
D) Assume the observation applies to all bacteria
Answer: B — Observations lead to hypotheses, which must be tested using controlled
experiments (with control and experimental groups) before conclusions can be drawn.
Question 3
Water's ability to act as a "universal solvent" is due to its __________ nature, meaning it
has slight positive and negative charges.
Answer: Polar (or polarity)
Question 4
The tendency of water molecules to stick to other water molecules (e.g., forming
droplets) is called __________, while the tendency to stick to other surfaces (e.g., water
climbing up a paper towel) is called __________.
Answer: Cohesion ; Adhesion
Question 5
What is the difference between a covalent bond and an ionic bond?
Answer: In a covalent bond, electrons are shared between atoms. In an ionic bond,
electrons are completely transferred from one atom to another, creating charged ions
that attract each other.
Question 6
The building of a macromolecule by removing a water molecule is called __________
synthesis (or a __________ reaction), while the breaking apart of a macromolecule by
adding water is called __________.
, Answer: Dehydration ; condensation ; hydrolysis
Question 7
Which of the following macromolecules is the primary source of quick energy for cells?
Answer: Carbohydrates
Question 8
What are the monomers (building blocks) of proteins?
Answer: Amino acids
Question 9
What makes each of the 20 amino acids unique from one another?
Answer: The R - group (or side chain)
Question 10
Which type of lipid is the primary structural component of the cell membrane?
Answer: Phospholipids
Question 11 (Lab Specific)
You perform a test on an unknown sample using Benedict's reagent. The solution turns
from blue to orange. What does this indicate?
Answer: The sample contains simple sugars (reducing sugars).
Question 12 (Lab Specific)
Match the biochemical test to the macromolecule it tests for:
* Iodine (Lugol's) → __________
Modules 1–6 & Final Exam Complete
Verified Q&A Bundle
Portage Learning | Academic
Year
MODULE 1: The Scientific Method & Chemistry of Life
Question 1
In an experiment testing the effect of a new energy drink on heart rate, the heart rate
is measured. What is the role of the heart rate in this experiment?
A) Control group
B) Independent variable
C) Dependent variable
D) Controlled variable
Answer: C — The dependent variable is the outcome that is measured. The
independent variable is what is manipulated (the energy drink).
Question 2
A scientist observes that a specific type of bacteria grows faster in a dark environment
than in a light environment. Before concluding that darkness causes faster growth,
what must the scientist do?
A) Publish the results immediately
,B) Design a controlled experiment to test the hypothesis
C) Discard the observation as it cannot be proven
D) Assume the observation applies to all bacteria
Answer: B — Observations lead to hypotheses, which must be tested using controlled
experiments (with control and experimental groups) before conclusions can be drawn.
Question 3
Water's ability to act as a "universal solvent" is due to its __________ nature, meaning it
has slight positive and negative charges.
Answer: Polar (or polarity)
Question 4
The tendency of water molecules to stick to other water molecules (e.g., forming
droplets) is called __________, while the tendency to stick to other surfaces (e.g., water
climbing up a paper towel) is called __________.
Answer: Cohesion ; Adhesion
Question 5
What is the difference between a covalent bond and an ionic bond?
Answer: In a covalent bond, electrons are shared between atoms. In an ionic bond,
electrons are completely transferred from one atom to another, creating charged ions
that attract each other.
Question 6
The building of a macromolecule by removing a water molecule is called __________
synthesis (or a __________ reaction), while the breaking apart of a macromolecule by
adding water is called __________.
, Answer: Dehydration ; condensation ; hydrolysis
Question 7
Which of the following macromolecules is the primary source of quick energy for cells?
Answer: Carbohydrates
Question 8
What are the monomers (building blocks) of proteins?
Answer: Amino acids
Question 9
What makes each of the 20 amino acids unique from one another?
Answer: The R - group (or side chain)
Question 10
Which type of lipid is the primary structural component of the cell membrane?
Answer: Phospholipids
Question 11 (Lab Specific)
You perform a test on an unknown sample using Benedict's reagent. The solution turns
from blue to orange. What does this indicate?
Answer: The sample contains simple sugars (reducing sugars).
Question 12 (Lab Specific)
Match the biochemical test to the macromolecule it tests for:
* Iodine (Lugol's) → __________
