The scientists responsible for decoding the genetic code were

Hello everyone. So I have this AP Biology summer assignment and I'm confused about some of the questions:

1. The scientists responsible for decoding the genetic code were
(A) Beadle and Tatum
(B) Watson and Crick
(C) Shields and Yarnell
(D) Darwin and Wallace

2. Cells reproduce asexually by process of
(A) meiosis
(B) mitosis
(C) sporogenesis
(D) abiogenesis
(E) segagenesis

3. Sweat glands of sea birds concentrate salt from the blood and then excrete it outside of the body. What process allows this concentration of salts?
(A) diffusion
(B) osmosis
(C) active transport
(D) dialysis

Use the following organ system choices for the questions that follow
A. circulatory     B. nervous     C. digestive     D. skeletal       E. muscular

1. smooth, striated or cardiac

2. allows movement

3. peristalsis