Middle School Science Review

The two strands of nitrogenous bases in DNA are joined by which type of bond?

• polar bonds

• ionic bonds

• covalent bonds

• hydrogen bonds

Tags

NGSS.HS-LS1-1

The drawing shows the structure of what molecule?

• DNA molecule

• lipid molecule

• carbohydrate molecule

• protein molecule

Tags

NGSS.HS-LS1-1

A long chain of amino acids is a/an

• protein

• nucleic acid

• tRNA

• mRNA

Tags

NGSS.HS-LS1-1

Adenine bonds with ______________.

• Guanine

• Thymine

• Cytosine

• Adenine

Guanine bonds with ______________.

• Adenine

• Guanine

• Cytosine

• Thymine

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine

• adenine, thymine cytosine, and guanine

• adenine, thymine, cytosine, and gylcerol

• adenine, thymine, cytosine, and glucose

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG

• TAC ACT GTC

• GTA AGT GAC

• CAT TCA CTG

In eukaryotes, which organelle is DNA usually found in?

• cell membrane

• vacuole

• chloroplast

• nucleus

What does DNA stand for?

• Deoxyribonucleic acid

• Denitrogenous acid

• Deribonucleic acid

• Diribonucleic acid

The building block of nucleic acids are nucleotides.  Nucleotides are composed of a sugar, a phosphate group, and a _________________ base.

• oxygen

• hydrogen

• nitrogen

• carbon