Question

Please check my answers

Answer 1

1. Which of the following is true about DNA
A. It is a single stranded molecule
B. Both the original DNA strands act as templates during replication
C. Its replication takes place in the cytosol
D. Only one of the original DNA strands acts as a template during replication


2. A zebra cell is just about to replicate its DNA. Which of the following will happen first?
A. All of the cells DNA attaches to proteins
B. The DNA unravels ti make two strands
C. RNA attaches to DNA
D. The DNA folds over on itself to create a dense chromosome


3. During DNA replication in a human cell, 6 billion bases must be paired properly. Which characteristic of DNA best allows for high levels of accuracy during this process?
A. Ion channels
B. Base pairing according to certain rules
C. Presence of ribose in the backbone
D. Single-helix shape

Answer 2

My answers are for A, B, D

Answer 3

1 is right, 2 is right, 3 i'm nit sure about.