A-According to Chargaff’s rules, if a sample of the nitrogenous portion of DNA i

Question

A-According to Chargaff’s rules, if a sample of the nitrogenous portion of DNA is 30% adenine bases, then the sample will also contain:
1. 30% cytosine
2. 30% guanine
3. 70% uracil
4. 30% uracil
5. 30% thymine

B-_____ synthesize DNA, ____ unwind DNA strands, and _____ reduce torsional strain during replication.

1. DNA polymerases, DNA gyrases, topoisomerases.
2. DNA polymerases, topoisomerases, primases.
3. Primases, helicases, DNA polymerases.
4. DNA polymerases, helicases, DNA gyrases.
5. Helicases, DNA ligases, topoisomerases.

Explanation / Answer

A) 5. 30% thymine. because A=T, they are in equal proportion.

B)  4. DNA polymerases, helicases, DNA gyrases.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.