,BIO 201 Exam 1 – Anatomy & Physiology I (2026)
Q&A | StraighterLine
1. The study of the structure of body parts and their relationships is called:
A) Anatomy
B) Physiology
C) Histology
D) Cytology
Correct Answer: Anatomy
Rationale: Anatomy focuses on the form and organization of structures.
Physiology studies function, histology studies tissues, and cytology studies cells.
2. The principle that function reflects structure is known as:
A) Homeostasis
B) Complementarity of structure and function
C) Negative feedback
D) Hierarchy of organization
Correct Answer: Complementarity of structure and function
Rationale: This principle states that what a structure can do depends on its
specific form. For example, bones support and protect because they contain
hard mineral deposits.
,3. The simplest level of organization in the human body is the:
A) Cellular level
B) Tissue level
C) Chemical level
D) Organ level
Correct Answer: Chemical level
Rationale: The chemical level includes atoms and molecules, which are the
building blocks for cells, tissues, and organs.
4. The maintenance of a relatively stable internal environment despite external
changes is termed:
A) Metabolism
B) Adaptation
C) Responsiveness
D) Homeostasis
Correct Answer: Homeostasis
Rationale: Homeostasis is a dynamic equilibrium maintained by feedback
mechanisms. Metabolism is the sum of chemical reactions; adaptation is a
long‑term adjustment.
5. A feedback mechanism that enhances or amplifies a change is called:
A) Positive feedback
, B) Negative feedback
C) Feedforward control
D) Homeostatic imbalance
Correct Answer: Positive feedback
Rationale: Positive feedback increases the output of a system, such as blood
clotting and childbirth. Negative feedback counteracts changes.
6. Body temperature regulation is an example of which type of feedback?
A) Positive feedback
B) Negative feedback
C) Feedforward
D) Oscillating feedback
Correct Answer: Negative feedback
Rationale: When body temperature rises, mechanisms (sweating, vasodilation)
act to reduce it, returning it to the set point.
7. In the anatomical position, the body is:
A) Lying face down
B) Sitting upright
C) Standing upright, palms facing forward
D) Standing with arms crossed
Q&A | StraighterLine
1. The study of the structure of body parts and their relationships is called:
A) Anatomy
B) Physiology
C) Histology
D) Cytology
Correct Answer: Anatomy
Rationale: Anatomy focuses on the form and organization of structures.
Physiology studies function, histology studies tissues, and cytology studies cells.
2. The principle that function reflects structure is known as:
A) Homeostasis
B) Complementarity of structure and function
C) Negative feedback
D) Hierarchy of organization
Correct Answer: Complementarity of structure and function
Rationale: This principle states that what a structure can do depends on its
specific form. For example, bones support and protect because they contain
hard mineral deposits.
,3. The simplest level of organization in the human body is the:
A) Cellular level
B) Tissue level
C) Chemical level
D) Organ level
Correct Answer: Chemical level
Rationale: The chemical level includes atoms and molecules, which are the
building blocks for cells, tissues, and organs.
4. The maintenance of a relatively stable internal environment despite external
changes is termed:
A) Metabolism
B) Adaptation
C) Responsiveness
D) Homeostasis
Correct Answer: Homeostasis
Rationale: Homeostasis is a dynamic equilibrium maintained by feedback
mechanisms. Metabolism is the sum of chemical reactions; adaptation is a
long‑term adjustment.
5. A feedback mechanism that enhances or amplifies a change is called:
A) Positive feedback
, B) Negative feedback
C) Feedforward control
D) Homeostatic imbalance
Correct Answer: Positive feedback
Rationale: Positive feedback increases the output of a system, such as blood
clotting and childbirth. Negative feedback counteracts changes.
6. Body temperature regulation is an example of which type of feedback?
A) Positive feedback
B) Negative feedback
C) Feedforward
D) Oscillating feedback
Correct Answer: Negative feedback
Rationale: When body temperature rises, mechanisms (sweating, vasodilation)
act to reduce it, returning it to the set point.
7. In the anatomical position, the body is:
A) Lying face down
B) Sitting upright
C) Standing upright, palms facing forward
D) Standing with arms crossed
