Problem: OPTIONS:
- on the origin of mammals
- on the ethnic of species
- on various kinds of animals
- on the origin of species
Q: Q: Which landmark book on evolution via natural selection did charles darwin publish in 1859? A:
Answer: on the origin of species

Problem:OPTIONS:
- active absorption
- osmosis
- secondary transport
- primary active transport

Q: What phenomenon involves the forcing of a substance into a cell against its concentration gradient? A:
****
A: primary active transport

Q: Which of these is last if ordered in increasing size: galaxy, solar system, star cluster? A:
OPTIONS:
- none of these
- solar system
- star cluster
- galaxy
galaxy

Q: Which organ has a thick mucus lining that protects the underlying tissue from the action of the digestive juices? A:
OPTIONS:
- liver
- colon
- spleen
- stomach

Answer: stomach

Question: Q: What basic structures are the site of all the life functions of an organism? A:
OPTIONS:
- lipids
- proteins
- genes
- cells
Answer: cells

input: OPTIONS:
- organelle
- genome
- protein
- organism Now, answer this question: Q: What is the largest level of organization? A:
A:
output:
organism