BIO 201 EXAM 1 2025: BIOLOGY CONCEPTS PRACTICE TEST | 170
QUESTIONS WITH CORRECT ANSWERS – CELL BIOLOGY, ANATOMY,
PHYSIOLOGY & METABOLISM
1. What is the primary function of lysosomes in a cell?
They transport materials across the cell membrane.
They store genetic information.
They synthesize proteins for cellular functions.
They breakdown, degrade and digest safely within a cell.
2. What is the most abundant chemical in the body?
Heat
Pressure
Water
Oxygen
Food
3. In a synthesis reaction, what is the outcome?
Exchanging ions between reactants
The reaction with oxygen to produce carbon dioxide and water
Breaking down a substance into simpler components
Combining two or more substances to form a new substance
,4. Describe the significance of water (H2O) in biological systems.
Water is primarily used for energy storage in cells.
Water is essential for various biochemical reactions, regulates
temperature, and serves as a solvent for many substances in the
body.
, Water is the main source of genetic information in cells.
Water acts as a structural component of proteins.
5. ___________ is the study prenatal development before birth and _______ is the
study of tissue structure and function at a microscopic level.
anatomy / physiology
embryology / histology
physiology / anatomy
histology / embryology
6. Describe the significance of the dorsal body cavity in relation to the
nervous system.
The dorsal body cavity houses and protects the brain and spinal
cord, which are critical components of the nervous system.
The dorsal body cavity contains the heart and lungs, which are
vital for respiration.
The dorsal body cavity is responsible for digestion and nutrient
absorption.
The dorsal body cavity is involved in the production of hormones.
7. Describe how collagen fibers contribute to the structural integrity of
intervertebral discs.
Collagen fibers help in the transmission of signals between discs.
Collagen fibers primarily store energy for the disc.
Collagen fibers are responsible for producing synovial fluid.
Collagen fibers provide strength through crosslinks that resist
pulling apart and also offer cushioning.
, 8. Which system is primarily responsible for rapid responses to external
stimuli in the body?
Endocrine system
Immune system
Digestive system
Nervous system
9. The function of the intercalated discs in cardiac muscle is to:
generate the appropriate neurotransmitters to regulate
provide the mechanism by which all of the cardiac muscle cells
can contract as a functional unit
Store ATP
separate sarcomers from each other
10. During labor, the body releases oxytocin, a hormone that speeds up the
time between contractions. As contractions increase, more oxytocin is
released, which speeds up the contractions, resulting in more oxytocin,
and so on, until the baby is born. This is an example of...
Signal transduction
Homeostasis
Positive feedback
Negative feedback
11. __________ is a process of chromosome segregation and nuclear division
followed by cell division that produces two daughter cells with the same
chromosome number and DNA content as the parent cell.
QUESTIONS WITH CORRECT ANSWERS – CELL BIOLOGY, ANATOMY,
PHYSIOLOGY & METABOLISM
1. What is the primary function of lysosomes in a cell?
They transport materials across the cell membrane.
They store genetic information.
They synthesize proteins for cellular functions.
They breakdown, degrade and digest safely within a cell.
2. What is the most abundant chemical in the body?
Heat
Pressure
Water
Oxygen
Food
3. In a synthesis reaction, what is the outcome?
Exchanging ions between reactants
The reaction with oxygen to produce carbon dioxide and water
Breaking down a substance into simpler components
Combining two or more substances to form a new substance
,4. Describe the significance of water (H2O) in biological systems.
Water is primarily used for energy storage in cells.
Water is essential for various biochemical reactions, regulates
temperature, and serves as a solvent for many substances in the
body.
, Water is the main source of genetic information in cells.
Water acts as a structural component of proteins.
5. ___________ is the study prenatal development before birth and _______ is the
study of tissue structure and function at a microscopic level.
anatomy / physiology
embryology / histology
physiology / anatomy
histology / embryology
6. Describe the significance of the dorsal body cavity in relation to the
nervous system.
The dorsal body cavity houses and protects the brain and spinal
cord, which are critical components of the nervous system.
The dorsal body cavity contains the heart and lungs, which are
vital for respiration.
The dorsal body cavity is responsible for digestion and nutrient
absorption.
The dorsal body cavity is involved in the production of hormones.
7. Describe how collagen fibers contribute to the structural integrity of
intervertebral discs.
Collagen fibers help in the transmission of signals between discs.
Collagen fibers primarily store energy for the disc.
Collagen fibers are responsible for producing synovial fluid.
Collagen fibers provide strength through crosslinks that resist
pulling apart and also offer cushioning.
, 8. Which system is primarily responsible for rapid responses to external
stimuli in the body?
Endocrine system
Immune system
Digestive system
Nervous system
9. The function of the intercalated discs in cardiac muscle is to:
generate the appropriate neurotransmitters to regulate
provide the mechanism by which all of the cardiac muscle cells
can contract as a functional unit
Store ATP
separate sarcomers from each other
10. During labor, the body releases oxytocin, a hormone that speeds up the
time between contractions. As contractions increase, more oxytocin is
released, which speeds up the contractions, resulting in more oxytocin,
and so on, until the baby is born. This is an example of...
Signal transduction
Homeostasis
Positive feedback
Negative feedback
11. __________ is a process of chromosome segregation and nuclear division
followed by cell division that produces two daughter cells with the same
chromosome number and DNA content as the parent cell.
