BIO 201 Exam UPDATED ACTUAL Exam
Questions and CORRECT Answers
Structural Organization - CORRECT ANSWER - chemical, cellular, tissue, organ, organ
system, organism
Homeostasis - CORRECT ANSWER - Maintaining internal stability (e.g., temperature,
pH); controlled by feedback systems.
Feedback Mechanism - CORRECT ANSWER - Negative feedback: Reverses a change
(e.g., body temp regulation).
Positive feedback: Amplifies a change (e.g., blood clotting, childbirth).
Organelles & Functions - CORRECT ANSWER - Nucleus (DNA), mitochondria (ATP),
ER (protein/lipid synthesis), Golgi (modification/shipping), lysosomes (digestion), ribosomes
(protein synthesis).
Plasma Membrane - CORRECT ANSWER - Phospholipid bilayer, selective permeability,
membrane proteins (channels, receptors), transport mechanisms (diffusion, osmosis, active
transport).
Tissues - CORRECT ANSWER - Epithelial, connective, muscle, nervous—know structure
& function.
Skin Layers - CORRECT ANSWER - Epidermis: Stratified squamous epithelium (layers:
stratum basale → stratum corneum).
Dermis: Papillary & reticular layers (contains blood vessels, nerves, glands).
Hypodermis: Fat storage (not technically part of the skin).
Burns - CORRECT ANSWER - 1st (epidermis), 2nd (dermis), 3rd (full thickness—
epidermis, dermis, hypodermis).
Questions and CORRECT Answers
Structural Organization - CORRECT ANSWER - chemical, cellular, tissue, organ, organ
system, organism
Homeostasis - CORRECT ANSWER - Maintaining internal stability (e.g., temperature,
pH); controlled by feedback systems.
Feedback Mechanism - CORRECT ANSWER - Negative feedback: Reverses a change
(e.g., body temp regulation).
Positive feedback: Amplifies a change (e.g., blood clotting, childbirth).
Organelles & Functions - CORRECT ANSWER - Nucleus (DNA), mitochondria (ATP),
ER (protein/lipid synthesis), Golgi (modification/shipping), lysosomes (digestion), ribosomes
(protein synthesis).
Plasma Membrane - CORRECT ANSWER - Phospholipid bilayer, selective permeability,
membrane proteins (channels, receptors), transport mechanisms (diffusion, osmosis, active
transport).
Tissues - CORRECT ANSWER - Epithelial, connective, muscle, nervous—know structure
& function.
Skin Layers - CORRECT ANSWER - Epidermis: Stratified squamous epithelium (layers:
stratum basale → stratum corneum).
Dermis: Papillary & reticular layers (contains blood vessels, nerves, glands).
Hypodermis: Fat storage (not technically part of the skin).
Burns - CORRECT ANSWER - 1st (epidermis), 2nd (dermis), 3rd (full thickness—
epidermis, dermis, hypodermis).
