Structure and Function of DNA

What will the matching sequence be on a strand that reads AAGCTAT?

• AACGATA

• TTCGTTA

• CCTGATA

• TTCGATA

Which of the following best describes a DNA molecule?

• double helix

• contains ribose

• made of amino acids

• contains Uracil

Tags

NGSS.HS-LS1-1

Which of the following units are repeatedly joined together to form a strand of DNA? (This is the MONOMER of DNA.) 

• amino acids

• nucleotides

• fatty acids

• polysaccharides

Which 2 molecules forms the sides (backbone) of the DNA ladder?

• deoxyribose and adenine

• deoxyribose and a hydrogen bond

• sugar and the nucleus

• deoxyribose (sugar) and phosphate

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine

• guanine

• thymine

• uracil

Tags

NGSS.HS-LS1-1

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids

• nucleotides

• fatty acids

• polysaccharides

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases

• the order (sequence) of the nitrogen bases

• the color of the nitrogen bases

• the frequency (number) of nitrogen bases

Tags

NGSS.HS-LS1-1

Has a deoxyribose sugar

• DNA

• RNA

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine

• deoxyribose sugar and a hydrogen bond

• deoxyribose sugar and the nucleus

• deoxyribose sugar and phosphate

Nitrogenous bases are joined by which type of bond?

• polar bonds

• ionic bonds

• covalent bonds

• hydrogen bonds