ATI RN
Cell and Tissue Questions and Answers Questions
Question 1 of 5
Microtubules form that assist in the movement of chromosomes during cell division.
Correct Answer: A
Rationale: Spindle fibers, made of microtubules, move chromosomes during mitosis.
Question 2 of 5
A sequence of three bases on mRNA is called a(n) , while the complementary three bases on mRNA is called a(n)
Correct Answer: D
Rationale: A codon is on mRNA; an anticodon is on tRNA, complementary to the codon.
Question 3 of 5
The formation of the cleavage furrow marks the beginning of of mitosis.
Correct Answer: C
Rationale: The cleavage furrow begins cytokinesis, the cytoplasmic division.
Question 4 of 5
The subatomic particle that has a mass of1 \mathrm{amu}$ and has no charge is the:
Correct Answer: D
Rationale: Neutrons have a mass of ~1 atomic mass unit (amu) and are neutral.
Question 5 of 5
A double covalent bond occurs when two atoms share:
Correct Answer: B
Rationale: A double covalent bond involves sharing 4 electrons (2 pairs), e.g., O2.