Nucleic Acids

Which nitrogenous base is normally present in DNA but absent from RNA?

• adenine

• cytosine

• thymine

• guanine

Which two bases are present in equal amounts in a double-stranded DNA molecule?

• cytosine and thymine

• adenine and thymine

• adenine and uracil

• cytosine and uracil

The genetic material in living organisms is composed of organic molecules known as

• starches

• lipids

• nucleic acids

• fatty acids

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Knowledge of the structure of DNA is important in the study of life because DNA

• stores food

• transmits genetic information

• transmits chemical energy

• stores enzymes

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which element is present in all nucleic acids, but not present in amino acids?

• Hydrogen (H)

• Phosphorus (P)

• Oxygen (O)

• Iron (Fe)

DNA and RNA are examples of...

• proteins

• nucleic acids

• carbohydrates

• lipids

What is the monomer of nucleic acids?

• Glycerol

• Monosaccharides

• Amino Acids

• Nucleotides

What are the components of a nucleotide?

• nitrogen base, phosphate group, and pentose sugar

• DNA, phosphate group, monosaccharide

• nitrogen base and a phosphate group

• pentose sugar, purine, and pyrimidine

What elements make up nucleic acids?

• CHO

• CHON

• CHONP

• CHONPS

The backbone of DNA is made up of _______ & ________ units.

• sugar & base

• sugar & phosphate

• base & phosphate

• phosphate & phosphate