DNA questions

What are the basic structural units of a DNA molecule?

• glucose molecules

• amino acids

• lipids

• nucleotides

The diagram below represents the building block of a large molecule known as a

• protein

• fatty acid

• carbohydrate

• nucleic acid

A polymer commonly found in the nucleus of cells is

• ATP

• hemoglobin

• cellulose

• DNA

Tags

NGSS.HS-LS1-1

Which molecule has the shape of a double-stranded helix?

• RNA

• DNA

• ADP

• ATP

The individuality of an organism is determined by the

• sequence of nitrogenous bases in deoxyribonucleic acid

• number of amino acids in a cell

• position of the ribosomes on the endoplasmic reticulum

• number of nitrogenous bases in a codon

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Watson and Crick described the DNA molecule as a

• straight chain

• single strand

• double helix

• branching chain

DNA is a polymer consisting of repeating units known as

• dipeptides

• nucleotides

• amino acids

• organic salts

The DNA molecule has a ladder-type structural organization. Each rung of this ladder represents

• alternating phosphate and glucose molecules

• a pair of nitrogenous bases

• ribose molecules

• a random organization of proteins and lipids

The nitrogen bases found in DNA are represented by the letters

• A, U, G, and C

• A, T, G, and C

• T, A, P, and C

• T, U, G, and C

The weakest bonds in a double-stranded molecule of deoxyribonucleic acid exist between the

• deoxyribose sugars

• phosphate groups

• nitrogenous bases

• 5-carbon sugars