BSC 2085 EXAM 2 YUNG SU FSU 2026
BIOLOGY TEST PAPER QUESTIONS
ANSWERS GRADED A+
◉ Three layers of skin.
Answer: The three layers of skin are the epidermis, dermis, and
hypodermis, each with distinct functions and components.
◉ Stratum germinativum.
Answer: The stratum germinativum is the deepest layer of the epidermis
responsible for cell division and regeneration.
◉ Stratum corneum.
Answer: The stratum corneum is the outermost layer of the epidermis,
consisting of dead keratinized cells that provide a barrier.
◉ Callus formation.
Answer: Callus formation occurs when the skin thickens in response to
repeated friction or pressure.
◉ Role of melanin.
Answer: Melanin is a pigment produced by melanocytes that protects the
skin from UV radiation and gives color to the skin.
, ◉ Nail development.
Answer: Nails develop from the nail matrix and protect the tips of
fingers and toes while aiding in grasping objects.
◉ Tissues in the dermis.
Answer: The dermis contains connective tissue, blood vessels, nerves,
and various glands.
◉ Roles of different receptors in the skin.
Answer: Different receptors in the skin detect touch, pressure, pain, and
temperature.
◉ Hair formation.
Answer: Hair is formed from keratinized cells in hair follicles, with
growth influenced by genetics and hormones.
◉ Structure of a hair.
Answer: A hair consists of the hair shaft, root, and follicle, with a bulb at
the base containing living cells.
◉ Hair coloration.
Answer: Hair color is determined by the type and amount of melanin
produced by melanocytes in the hair follicle.
◉ Role of sebaceous glands.
BIOLOGY TEST PAPER QUESTIONS
ANSWERS GRADED A+
◉ Three layers of skin.
Answer: The three layers of skin are the epidermis, dermis, and
hypodermis, each with distinct functions and components.
◉ Stratum germinativum.
Answer: The stratum germinativum is the deepest layer of the epidermis
responsible for cell division and regeneration.
◉ Stratum corneum.
Answer: The stratum corneum is the outermost layer of the epidermis,
consisting of dead keratinized cells that provide a barrier.
◉ Callus formation.
Answer: Callus formation occurs when the skin thickens in response to
repeated friction or pressure.
◉ Role of melanin.
Answer: Melanin is a pigment produced by melanocytes that protects the
skin from UV radiation and gives color to the skin.
, ◉ Nail development.
Answer: Nails develop from the nail matrix and protect the tips of
fingers and toes while aiding in grasping objects.
◉ Tissues in the dermis.
Answer: The dermis contains connective tissue, blood vessels, nerves,
and various glands.
◉ Roles of different receptors in the skin.
Answer: Different receptors in the skin detect touch, pressure, pain, and
temperature.
◉ Hair formation.
Answer: Hair is formed from keratinized cells in hair follicles, with
growth influenced by genetics and hormones.
◉ Structure of a hair.
Answer: A hair consists of the hair shaft, root, and follicle, with a bulb at
the base containing living cells.
◉ Hair coloration.
Answer: Hair color is determined by the type and amount of melanin
produced by melanocytes in the hair follicle.
◉ Role of sebaceous glands.
