input: OPTIONS:
- pulmonary
- vascular
- lymphatic
- circulatory Now, answer this question: Q: Segmented worms have a digestive,nervous and what type of system? A:
A:
output: circulatory

Q: Land could not be colonized by other organisms until what became established? A:

OPTIONS:
- gases
- carbon dioxide
- oxygen
- plants

Answer: plants

Problem: OPTIONS:
- cells
- protein
- tissues
- organism
Q: Q: The regulation of gene expression is extremely important during the development of what? A:
Answer: organism

Problem:OPTIONS:
- metabolism
- meiosis
- cellular respiration
- cell division

Q: Cancer develops when what process is unregulated? A:
****
A: cell division

Q: The binding of complementary bases allows dna molecules to take their well-known shape, called a what? A:
OPTIONS:
- triple helix
- single helix
- simple helix
- double helix
double helix

Q: When light strikes the rods and cones, they hyperpolarize, shutting off their release of what? A:
OPTIONS:
- enzyme
- vitreous fluid
- dopamine
- glutamate

Answer:
glutamate