Q: In which process do signaling molecules from embryonic cells cause transcriptional changes in nearby target cells? Choices: - replication - maturation - orientation - induction A:
induction

Q: Where is chemical energy stored? Choices: - ribosomes - cell wall - nucleus - atom bonds A:
atom bonds

Q: Q: Although it is not vital to humans, calcitonin is important for calcium homeostasis in adults of some species in what group characterized by backbones? Choices: - mammals - reptiles - invertebrates - vertebrates A:
A: vertebrates

Question: Q: What term describes how closely packed the particles of matter are? Choices: - range - mass - space - density A:
Answer: density

*Question*
Q: Cellular respiration and photosynthesis are important parts of which cycle? Choices: - vapor cycle - greenhouse effect - water cycle - carbon cycle A:
**Answer**
carbon cycle

(Question)
Q: What keeps earth in orbit around the sun? Choices: - energy - motion - momentum - gravity A:
(Answer)
gravity