ATI RN
Chapter 3 Cells and Tissues Review Questions Answers Questions
Question 1 of 5
A sequence of three bases on DNA is called a , while the complementary three bases on mRNA is called a(n)
Correct Answer: B
Rationale: A triplet is three bases on DNA; a codon is the complementary three bases on mRNA.
Question 2 of 5
Identify the subatomic particle that is negatively charged.
Correct Answer: A
Rationale: Electrons carry a negative charge, unlike protons (positive) and neutrons (neutral).
Question 3 of 5
Ions are formed when an atom gains or loses:
Correct Answer: A
Rationale: Ions form by gaining or losing electrons, altering charge without changing the element.
Question 4 of 5
A substance that either takes up hydrogen ions or releases hydroxide ions in water is a(an)
Correct Answer: B
Rationale: Bases accept H+ or release OH-, increasing pH.
Question 5 of 5
The molecule that body cells use as an immediate source of energy is:
Correct Answer: D
Rationale: Glucose is the primary energy source for cellular respiration.