BIO 161 PSU EXAM 1 QUESTIONS AND ANSWERS
WITH VERIFIED SOLUTIONS (100% CORRECT) LATEST
2026/2027 UPDATE | GRADED A+.
Subdivisions of Anatomy
✔✔ Gross (macroscopic) – visible to the naked eye
✔✔ Microscopic – histology and cytology
✔✔ Developmental – changes from conception through adulthood
Subdivisions of Physiology
✔✔ Focused on organ systems (e.g., renal, cardiovascular)
✔✔ Typically examines cellular and molecular mechanisms
Characteristics of Life
✔✔ Independent function
✔✔ Reproduction
✔✔ Responsiveness to stimuli
✔✔ Energy use (metabolism)
✔✔ Growth
Principle of Complementarity
✔✔ Structure determines function; what a structure can do is based on its form
Necessary Life Functions
✔✔ Maintaining boundaries
, ✔✔ Movement
✔✔ Responsiveness
✔✔ Digestion
✔✔ Metabolism
✔✔ Excretion
✔✔ Reproduction
✔✔ Growth
Types of Feedback
✔✔ Negative Feedback – reverses a change (e.g., temperature regulation)
✔✔ Positive Feedback – amplifies a change (e.g., childbirth)
Homeostatic Imbalance
✔✔ Disruption in homeostasis leading to disease or dysfunction
Body Cavities
• Dorsal Cavity:
✔✔ Cranial cavity (brain) ✔✔ Vertebral
cavity (spinal cord)
• Ventral Cavity:
✔✔ Thoracic cavity
✔✔ Abdominopelvic cavity
Survival Needs
✔✔ Nutrients
WITH VERIFIED SOLUTIONS (100% CORRECT) LATEST
2026/2027 UPDATE | GRADED A+.
Subdivisions of Anatomy
✔✔ Gross (macroscopic) – visible to the naked eye
✔✔ Microscopic – histology and cytology
✔✔ Developmental – changes from conception through adulthood
Subdivisions of Physiology
✔✔ Focused on organ systems (e.g., renal, cardiovascular)
✔✔ Typically examines cellular and molecular mechanisms
Characteristics of Life
✔✔ Independent function
✔✔ Reproduction
✔✔ Responsiveness to stimuli
✔✔ Energy use (metabolism)
✔✔ Growth
Principle of Complementarity
✔✔ Structure determines function; what a structure can do is based on its form
Necessary Life Functions
✔✔ Maintaining boundaries
, ✔✔ Movement
✔✔ Responsiveness
✔✔ Digestion
✔✔ Metabolism
✔✔ Excretion
✔✔ Reproduction
✔✔ Growth
Types of Feedback
✔✔ Negative Feedback – reverses a change (e.g., temperature regulation)
✔✔ Positive Feedback – amplifies a change (e.g., childbirth)
Homeostatic Imbalance
✔✔ Disruption in homeostasis leading to disease or dysfunction
Body Cavities
• Dorsal Cavity:
✔✔ Cranial cavity (brain) ✔✔ Vertebral
cavity (spinal cord)
• Ventral Cavity:
✔✔ Thoracic cavity
✔✔ Abdominopelvic cavity
Survival Needs
✔✔ Nutrients
