BIO 250 PRACTICE EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+
◉ mechanisms that maintain homeostasis. Answer: Sensors (receptors),
a control center (usually the brain), and effectors (muscles/glands) that
restore balance.
◉ example of homeostasis in action. Answer: Regulation of body
temperature—if you get too hot, you sweat; if you get too cold, you
shiver.
◉ negative feedback. Answer: A process in which a change in a variable
triggers a response that counteracts the initial change, returning the
variable to its set point.
◉ example of negative feedback. Answer: Blood glucose regulation—
high blood sugar triggers insulin release, lowering blood sugar back to
normal.
◉ anatomical position. Answer: Standing upright, facing forward, arms
at sides, palms forward, feet together.
,◉ importance of anatomical position. Answer: It provides a consistent
frame of reference for anatomical terminology.
◉ anatomical regions. Answer: Head, neck, trunk, upper limbs, lower
limbs.
◉ superior. Answer: Above; toward the head.
◉ inferior. Answer: Below; toward the feet.
◉ anterior. Answer: Front of the body.
◉ posterior. Answer: Back of the body.
◉ medial. Answer: Toward the midline of the body.
◉ lateral. Answer: Away from the midline of the body.
◉ proximal. Answer: Closer to the trunk or point of origin.
◉ distal. Answer: Farther from the trunk or point of origin.
, ◉ superficial. Answer: Near the surface of the body.
◉ deep. Answer: Far from the surface of the body.
◉ sagittal plane. Answer: Divides the body into left and right portions.
◉ coronal (frontal) plane. Answer: Divides the body into anterior (front)
and posterior (back) portions.
◉ transverse plane. Answer: Divides the body into superior (upper) and
inferior (lower) portions.
◉ dorsal cavity. Answer: Cranial cavity (brain), vertebral cavity (spinal
cord).
◉ ventral cavity. Answer: Thoracic cavity (heart, lungs),
abdominopelvic cavity (stomach, liver, intestines, kidneys, bladder,
reproductive organs).
◉ epithelial tissue. Answer: Covers surfaces, lines cavities, forms
glands; functions include protection, absorption, secretion.
◉ connective tissue. Answer: Supports, binds, protects; includes bone,
cartilage, blood, adipose.
QUESTIONS WITH ANSWERS GRADED A+
◉ mechanisms that maintain homeostasis. Answer: Sensors (receptors),
a control center (usually the brain), and effectors (muscles/glands) that
restore balance.
◉ example of homeostasis in action. Answer: Regulation of body
temperature—if you get too hot, you sweat; if you get too cold, you
shiver.
◉ negative feedback. Answer: A process in which a change in a variable
triggers a response that counteracts the initial change, returning the
variable to its set point.
◉ example of negative feedback. Answer: Blood glucose regulation—
high blood sugar triggers insulin release, lowering blood sugar back to
normal.
◉ anatomical position. Answer: Standing upright, facing forward, arms
at sides, palms forward, feet together.
,◉ importance of anatomical position. Answer: It provides a consistent
frame of reference for anatomical terminology.
◉ anatomical regions. Answer: Head, neck, trunk, upper limbs, lower
limbs.
◉ superior. Answer: Above; toward the head.
◉ inferior. Answer: Below; toward the feet.
◉ anterior. Answer: Front of the body.
◉ posterior. Answer: Back of the body.
◉ medial. Answer: Toward the midline of the body.
◉ lateral. Answer: Away from the midline of the body.
◉ proximal. Answer: Closer to the trunk or point of origin.
◉ distal. Answer: Farther from the trunk or point of origin.
, ◉ superficial. Answer: Near the surface of the body.
◉ deep. Answer: Far from the surface of the body.
◉ sagittal plane. Answer: Divides the body into left and right portions.
◉ coronal (frontal) plane. Answer: Divides the body into anterior (front)
and posterior (back) portions.
◉ transverse plane. Answer: Divides the body into superior (upper) and
inferior (lower) portions.
◉ dorsal cavity. Answer: Cranial cavity (brain), vertebral cavity (spinal
cord).
◉ ventral cavity. Answer: Thoracic cavity (heart, lungs),
abdominopelvic cavity (stomach, liver, intestines, kidneys, bladder,
reproductive organs).
◉ epithelial tissue. Answer: Covers surfaces, lines cavities, forms
glands; functions include protection, absorption, secretion.
◉ connective tissue. Answer: Supports, binds, protects; includes bone,
cartilage, blood, adipose.
