DNA structure 1 20-21

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

Tags

NGSS.HS-LS1-1

Which two scientists are accredited with correctly deducing the double helix model of DNA?

• Watson and Crick

• Wilkins and Franklin

• Wilkins and Crick

• Watson and Franklin

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base
• sugar, oxygen, nitrogen base
• sugar, phosphate, nitrogen base
• sugar, phosphate, protein

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Which organelle is DNA usually found in?

• mitochondrian
• cell membrane
• chloroplast
• nucleus

A segment of DNA is called a

• chromosome
• gene
• amino acid
• protien

What does DNA stand for?

• Deoxyribonucleic acid
• Denitrogenous acid
• Deribonucleic acid
• Diribonucleic acid

Which of the following is/are correct about a DNA molecule? choose all that apply

• double stranded

• contains deoxyribose sugar

• twisted ladder

• contains uracil