BIOS 252 ACTUAL EXAM| COMPREHENSIVE QUESTIONS AND VERIFIED ANSWERS | (GRADED A+) 2026 EDITION.
Incorrect
Correct
Your answers
1 of 49
Term
Which of the following events will occur when depolarizing graded
potentials reach the membrane of the axon hillock, causing it's
membrane potential to reach threshold?
Give this one a try later!
mechanically-gated Na+ channels voltage-gated Na+ channels
activate open rapidly
voltage-gated K+ channels close ligand-gated Ca2+ channels open
slowly rapidly
1/30
, 2 of 49
Term
Which of the following is NOT a function of smooth muscle tissue?
Give this one a try later!
altering the diameter of the
myelin sheath covering the axon
respiratory passageways
blinking the eyelid raising the eyebrows
3 of 49
Term
The sarcoplasmic reticulum stores
Give this one a try later!
calcium ions chloride ions
sodium ions potassium ions
2/30
, 4 of 49
Term
Which of the following cellular organelle can best be described as
fairly long, slender extensions of the plasma membrane that help to
move fluids or secretions across the cell surface
Give this one a try later!
mitochondria cillia
vacuole fimbriae
5 of 49
Term
Which of the following glands is responsible for secreting oil onto the
surface of the skin?
Give this one a try later!
3/30
Incorrect
Correct
Your answers
1 of 49
Term
Which of the following events will occur when depolarizing graded
potentials reach the membrane of the axon hillock, causing it's
membrane potential to reach threshold?
Give this one a try later!
mechanically-gated Na+ channels voltage-gated Na+ channels
activate open rapidly
voltage-gated K+ channels close ligand-gated Ca2+ channels open
slowly rapidly
1/30
, 2 of 49
Term
Which of the following is NOT a function of smooth muscle tissue?
Give this one a try later!
altering the diameter of the
myelin sheath covering the axon
respiratory passageways
blinking the eyelid raising the eyebrows
3 of 49
Term
The sarcoplasmic reticulum stores
Give this one a try later!
calcium ions chloride ions
sodium ions potassium ions
2/30
, 4 of 49
Term
Which of the following cellular organelle can best be described as
fairly long, slender extensions of the plasma membrane that help to
move fluids or secretions across the cell surface
Give this one a try later!
mitochondria cillia
vacuole fimbriae
5 of 49
Term
Which of the following glands is responsible for secreting oil onto the
surface of the skin?
Give this one a try later!
3/30
