Which of the following lines the body cavities exp

ATI RN

ATI RN Test Bank

Which of the following lines the body cavities exposed to the external environment?

A. mesothelium B. lamina propria C. mesenteries D. mucosa

Correct Answer: D

Rationale: Mucosa lines cavities exposed to the external environment, such as the digestive and respiratory tracts, with epithelial tissue.

Bonds that result from shared electrons are called:

A. ionic bonds B. covalent bonds C. peptide bonds D. covalent or peptide bonds

Correct Answer: B

Rationale: Covalent bonds involve electron sharing; peptide bonds are a specific type of covalent bond in proteins.

Phospholipids involve a phosphate group and:

A. 4 or more fatty acids B. 3 fatty acids C. 2 fatty acids D. 1 fatty acid

Correct Answer: C

Rationale: Phospholipids have a glycerol, two fatty acids, and a phosphate group, unlike triglycerides with three.

Which organelle contains hydrolytic enzymes?

A. lysosome B. ribosome C. mitochondrion D. Golgi complex

Correct Answer: A

Rationale: Lysosomes contain hydrolytic enzymes for breaking down waste and cellular debris.

The genetic code for a single amino acid consists of:

A. one nucleotide B. two nucleotides C. three nucleotides D. four nucleotides

Correct Answer: C

Rationale: A codon, specifying one amino acid, is a triplet of three nucleotides.

$89/ 30 days

$150/ 90 days