8. The picture shows a mountain. The elevation is higher at altitude A than it is at altitude B. Circle the letter of
the altitude where the air is denser.
A
B

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set