ATI RN
Cells Tissues and Organs Comprehension Questions Questions
Question 1 of 5
The exocrine gland stores its secretion until the glandular cell ruptures, whereas the gland releases its apical region and reforms.
Correct Answer: A
Rationale: Holocrine glands rupture to release secretions (e.g., sebaceous glands), while apocrine glands release their apical portion and reform (e.g., mammary glands).
Question 2 of 5
Fats are reaction products of fatty acids and:
Correct Answer: B
Rationale: Fats (triglycerides) form from glycerol and three fatty acids via dehydration synthesis.
Question 3 of 5
Atoms of the same atomic number but of different mass numbers (different numbers of nuclear particles) are referred to as:
Correct Answer: B
Rationale: Isotopes have the same proton number but different neutron numbers, thus different mass numbers.
Question 4 of 5
The plasma membrane is a sandwich of:
Correct Answer: D
Rationale: The plasma membrane is a phospholipid bilayer with proteins embedded (protein-lipid-protein model).
Question 5 of 5
The sequence of amino acids in protein molecules is determined by the sequence of:
Correct Answer: C
Rationale: mRNA's nucleotide sequence (codons) dictates the amino acid order in proteins.