2. Anatomy and Physiology

Cellular Biology — Quiz

Test your understanding of cellular biology with 5 practice questions.

Practice Questions

Question 1

If extracellular potassium concentration increases from 4 mM to 8 mM while intracellular remains 140 mM, what is the approximate Nernst equilibrium potential for K⁺ at 37 °C? Show your calculation.

Question 2

Which cyclin–CDK complex is primarily responsible for the G₁–S phase transition in eukaryotic cells?

Question 3

Which organelle contains catalase and is the principal site for β-oxidation of very-long-chain fatty acids?

Question 4

What term describes the nuclear fragmentation observed during late apoptosis?

Question 5

Which cell junction type uses cadherin proteins linked to actin filaments to maintain mechanical integrity between epithelial cells?