BBS 200 Week 1 Quiz
Sonoran Desert School | 2026 Update | Total Points: 20
SECTION A: MULTIPLE CHOICE (Questions 1–15) — 1 point each
1. Which of the following best describes the primary function of the plasma membrane?
• A) To produce ATP for cellular energy
• B) To regulate what enters and exits the cell, maintaining internal stability
• C) To synthesize proteins from amino acids
• D) To store genetic information for cell division
Answer: B
Explanation: The plasma membrane is selectively permeable, controlling the passage of
substances in and out of the cell to maintain homeostasis and protect cellular integrity.
2. A patient presents with uncontrolled bleeding due to a deficiency in clotting factors. Which
tissue type is primarily responsible for producing these factors in the liver?
• A) Epithelial tissue
• B) Connective tissue
• C) Muscle tissue
• D) Nervous tissue
Answer: B
Explanation: The liver contains connective tissue that produces blood proteins, including clotting
factors; connective tissue is defined by its extracellular matrix and supportive functions
throughout the body.
3. Which term describes the body region located at the front of the knee?
• A) Popliteal
• B) Plantar
• C) Patellar
• D) Pelvic
, Answer: C
Explanation: The patellar region refers to the anterior (front) surface of the knee, named for the
patella (kneecap); popliteal is the posterior knee, plantar is the sole of the foot, and pelvic is the
hip region.
4. If a patient has a fever of 103°F, which homeostatic mechanism is most likely failing or
overwhelmed?
• A) Positive feedback loop regulating blood clotting
• B) Negative feedback loop regulating body temperature
• C) Feed-forward mechanism controlling digestion
• D) Neural reflex arc controlling muscle contraction
Answer: B
Explanation: Body temperature is maintained by a negative feedback loop where the
hypothalamus detects deviations from the set point and triggers cooling or warming responses;
a sustained fever indicates this loop is not effectively restoring normal temperature.
5. Which organelle is often called the 'powerhouse of the cell' because it generates most of
the cell's ATP?
• A) Ribosome
• B) Golgi apparatus
• C) Mitochondrion
• D) Lysosome
Answer: C
Explanation: Mitochondria carry out cellular respiration, breaking down glucose and other fuels
to produce ATP through oxidative phosphorylation, earning them the nickname 'powerhouse of
the cell.'
6. A microscope slide shows a tissue with multiple layers of flat, scale-like cells. Which type of
epithelial tissue is this?
• A) Simple cuboidal
• B) Stratified squamous
• C) Pseudostratified columnar
Sonoran Desert School | 2026 Update | Total Points: 20
SECTION A: MULTIPLE CHOICE (Questions 1–15) — 1 point each
1. Which of the following best describes the primary function of the plasma membrane?
• A) To produce ATP for cellular energy
• B) To regulate what enters and exits the cell, maintaining internal stability
• C) To synthesize proteins from amino acids
• D) To store genetic information for cell division
Answer: B
Explanation: The plasma membrane is selectively permeable, controlling the passage of
substances in and out of the cell to maintain homeostasis and protect cellular integrity.
2. A patient presents with uncontrolled bleeding due to a deficiency in clotting factors. Which
tissue type is primarily responsible for producing these factors in the liver?
• A) Epithelial tissue
• B) Connective tissue
• C) Muscle tissue
• D) Nervous tissue
Answer: B
Explanation: The liver contains connective tissue that produces blood proteins, including clotting
factors; connective tissue is defined by its extracellular matrix and supportive functions
throughout the body.
3. Which term describes the body region located at the front of the knee?
• A) Popliteal
• B) Plantar
• C) Patellar
• D) Pelvic
, Answer: C
Explanation: The patellar region refers to the anterior (front) surface of the knee, named for the
patella (kneecap); popliteal is the posterior knee, plantar is the sole of the foot, and pelvic is the
hip region.
4. If a patient has a fever of 103°F, which homeostatic mechanism is most likely failing or
overwhelmed?
• A) Positive feedback loop regulating blood clotting
• B) Negative feedback loop regulating body temperature
• C) Feed-forward mechanism controlling digestion
• D) Neural reflex arc controlling muscle contraction
Answer: B
Explanation: Body temperature is maintained by a negative feedback loop where the
hypothalamus detects deviations from the set point and triggers cooling or warming responses;
a sustained fever indicates this loop is not effectively restoring normal temperature.
5. Which organelle is often called the 'powerhouse of the cell' because it generates most of
the cell's ATP?
• A) Ribosome
• B) Golgi apparatus
• C) Mitochondrion
• D) Lysosome
Answer: C
Explanation: Mitochondria carry out cellular respiration, breaking down glucose and other fuels
to produce ATP through oxidative phosphorylation, earning them the nickname 'powerhouse of
the cell.'
6. A microscope slide shows a tissue with multiple layers of flat, scale-like cells. Which type of
epithelial tissue is this?
• A) Simple cuboidal
• B) Stratified squamous
• C) Pseudostratified columnar
