BIO 168 2 ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED
A+
◍ A cell is what?.
Answer: The smallest autonomous unit of life
◍ What structure allows the diaphysis of the bone to increase in length?.
Answer: epiphyseal plate
◍ The root __________ word means "black.".
Answer: melan-
◍ What does the nucleus contain?.
Answer: DNA, Chromatin, and nucleolus
◍ What is the function of the nucleus?.
Answer: To control the cell and coordinate the activities of the cell
◍ what are the components of chromatin?.
Answer: DNA, histones, and non-histone proteins
◍ Describe the basic properties of the plasma membrane Phospholipids and
their function?.
Answer: The hydrophilic head, and the hydrophobic tail.Their function is to
create a selective permeable barrier
◍ Which region of the phospholipids is hydrophilic? And which are
hydrophobic?.
Answer: The heads are hydrophilic and the tails are hydrophobic
◍ What is selective permeability when it comes to the plasma membrane?.
Answer: Allows some substances to pass through while not letting others
,◍ The root word __________ means "skin.".
Answer: cutan-
◍ What is cytoplasm, and what does it consist of?.
Answer: It lies between the nucleus and the plasma membrane 1. cytosol2.
organelles 3. cytoskeleton
◍ name, and describe the function of Microvilli, and where it is in the body?.
Answer: microvilli: increases surface area and aids in absorption found: in
the small intestine
◍ name and describe the function of cilia, and where it is in the body?.
Answer: cilia: short hairlike structures that move substances across the cell
surface found: in the respiratory tract
◍ The root word ___________ means "to secrete.".
Answer: -crine
◍ name and describe flagella and where it is located in the body?.
Answer: flagella- long whip-like structures used for the movement of the
cell found in: sperm cells
◍ Describe the function of the nucleus.
Answer: controls cell, and stores DNA
◍ The root word __________ means "pertaining to skin.".
Answer: derm-
◍ Another name for skin is __________ membrane..
Answer: cutaneous
◍ describe the function of Chromatin.
Answer: stores chromatin and histone proteins
◍ The layer of skin not exposed to air is the __________..
Answer: dermis
◍ Describe the function of the Plasma membrane.
Answer: regulates what enters or leaves the cell
, ◍ Hair color is determined by the amount of the pigment __________ present..
Answer: melanin
◍ __________glands secrete sweat..
Answer: eccrine
◍ Describe the function of centrioles?.
Answer: directs the formation of the mitotic spindle during cell division
◍ Which of the following is NOT one of the functions of the integumentary
system?
A. sensation
B. excretion
C. protection
D. vitamin C synthesis.
Answer: D. vitamin C synthesis
◍ Part completeThe region of skin that provides a tough barrier against
pathogens and trauma is the __________..
Answer: epidermis
◍ What tissue composes the epidermis of the skin?.
Answer: keratinized stratified squamous epithelium
◍ A hypothetical drug causes blood vessels to grow from the dermis into the
superficial stratum granulosum of the epidermis. What effect would you see
in the most superficial epidermal layers?.
Answer: It will thicken the epidermis.Why? The growth of blood vessels
means that there will be increased nutrient exchange. It will increase the rate
of growth of the surrounding the vessels.
◍ describe the function of rough endoplasmic reticulum.
Answer: provides a area for storage and transport on the ribosomes to other
cell areas
◍ describe the function of ribosomes.
Answer: actual site of protein synthesis
QUESTIONS WITH ANSWERS GRADED
A+
◍ A cell is what?.
Answer: The smallest autonomous unit of life
◍ What structure allows the diaphysis of the bone to increase in length?.
Answer: epiphyseal plate
◍ The root __________ word means "black.".
Answer: melan-
◍ What does the nucleus contain?.
Answer: DNA, Chromatin, and nucleolus
◍ What is the function of the nucleus?.
Answer: To control the cell and coordinate the activities of the cell
◍ what are the components of chromatin?.
Answer: DNA, histones, and non-histone proteins
◍ Describe the basic properties of the plasma membrane Phospholipids and
their function?.
Answer: The hydrophilic head, and the hydrophobic tail.Their function is to
create a selective permeable barrier
◍ Which region of the phospholipids is hydrophilic? And which are
hydrophobic?.
Answer: The heads are hydrophilic and the tails are hydrophobic
◍ What is selective permeability when it comes to the plasma membrane?.
Answer: Allows some substances to pass through while not letting others
,◍ The root word __________ means "skin.".
Answer: cutan-
◍ What is cytoplasm, and what does it consist of?.
Answer: It lies between the nucleus and the plasma membrane 1. cytosol2.
organelles 3. cytoskeleton
◍ name, and describe the function of Microvilli, and where it is in the body?.
Answer: microvilli: increases surface area and aids in absorption found: in
the small intestine
◍ name and describe the function of cilia, and where it is in the body?.
Answer: cilia: short hairlike structures that move substances across the cell
surface found: in the respiratory tract
◍ The root word ___________ means "to secrete.".
Answer: -crine
◍ name and describe flagella and where it is located in the body?.
Answer: flagella- long whip-like structures used for the movement of the
cell found in: sperm cells
◍ Describe the function of the nucleus.
Answer: controls cell, and stores DNA
◍ The root word __________ means "pertaining to skin.".
Answer: derm-
◍ Another name for skin is __________ membrane..
Answer: cutaneous
◍ describe the function of Chromatin.
Answer: stores chromatin and histone proteins
◍ The layer of skin not exposed to air is the __________..
Answer: dermis
◍ Describe the function of the Plasma membrane.
Answer: regulates what enters or leaves the cell
, ◍ Hair color is determined by the amount of the pigment __________ present..
Answer: melanin
◍ __________glands secrete sweat..
Answer: eccrine
◍ Describe the function of centrioles?.
Answer: directs the formation of the mitotic spindle during cell division
◍ Which of the following is NOT one of the functions of the integumentary
system?
A. sensation
B. excretion
C. protection
D. vitamin C synthesis.
Answer: D. vitamin C synthesis
◍ Part completeThe region of skin that provides a tough barrier against
pathogens and trauma is the __________..
Answer: epidermis
◍ What tissue composes the epidermis of the skin?.
Answer: keratinized stratified squamous epithelium
◍ A hypothetical drug causes blood vessels to grow from the dermis into the
superficial stratum granulosum of the epidermis. What effect would you see
in the most superficial epidermal layers?.
Answer: It will thicken the epidermis.Why? The growth of blood vessels
means that there will be increased nutrient exchange. It will increase the rate
of growth of the surrounding the vessels.
◍ describe the function of rough endoplasmic reticulum.
Answer: provides a area for storage and transport on the ribosomes to other
cell areas
◍ describe the function of ribosomes.
Answer: actual site of protein synthesis
