ATI RN
Cell and Tissue Test Bank Questions Questions
Question 1 of 5
Proteins involved with active transport are called:
Correct Answer: D
Rationale: Active transport proteins, like the sodium-potassium pump, are called pumps.
Question 2 of 5
The division of cytoplasm and organelles is referred to as:
Correct Answer: B
Rationale: Cytokinesis divides the cytoplasm and organelles after mitosis.
Question 3 of 5
If a neutral atom has 12 protons, how many electrons does it have?
Correct Answer: B
Rationale: A neutral atom has equal numbers of protons and electrons; 12 protons = 12 electrons.
Question 4 of 5
The most abundant molecule in living things is:
Correct Answer: C
Rationale: Water (H2O) comprises ~60-70% of living organisms, making it the most abundant molecule.
Question 5 of 5
pH is a measurement of the concentration of in solution.
Correct Answer: C
Rationale: pH measures H+ ion concentration (-log[H+]).