Which of the Following Statements Is TRUE

question 31

Multiple Choice

Which of the following statements is TRUE?

• A) A nucleotide is composed of a sugar, a base, and a sulfate group.
• B) A codon is a sequence of three bases that codes for a single peptide.
• C) A gene is a portion of DNA that codes for a single protein.
• D) Three bases in a sequence form a chromosome, and a set of chromosomes builds up DNA.
• E) Two helices that form one DNA molecule are held together by peptide bonds.

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Definitions:

Choroiditis

Inflammation of the choroid, a vascular layer of the eye, leading to vision problems.

Cycloplegia

Paralysis of the ciliary muscle of the eye, resulting in a loss of accommodation and inability to focus on close objects.

Keratitis

Inflammation of the cornea, the clear outer layer at the front of the eye, potentially caused by infection or injury.

Blepharitis

An inflammation of the eyelid margins, often causing redness, irritation, and itchy eyelids together with dandruff-like scales on the eyelashes.