Q: Further transformation occurs during organogenesis, the formation of what? A:

OPTIONS:
- arteries
- muscles
- bones
- organs

Answer: organs

Q: What biochemicals mediate changes in target cells by binding to specific receptors? A:

OPTIONS:
- amino acids
- acids
- enzymes
- hormones

Answer: hormones

Q: How many valence electrons do neutral phosphorus atoms have? A:

OPTIONS:
- nine
- three
- four
- five

Answer: five

Q: Diet correlates with the length of what organ system in vertebrates? A:

OPTIONS:
- respiratory
- reproductive
- circulatory
- digestive

Answer:
digestive