Q: Amino acids are joined together to form a chain at what molecular structure? Choices: - chloroplasts - chromosomes - DNA - ribosomes A:
ribosomes

Q: The brain is said to contain gray matter, while what related structure contains white matter separated into columns? Choices: - brain stem - amygdala - orbital lobe - spinal cord A:
spinal cord

Q: Q: What is the dominant form of plant life in most terrestrial ecosystems, comprising about 90 percent of all plant species? Choices: - pteridophytes - gymnosperms - bryophytes - angiosperms A:
A: angiosperms

Question: Q: Melting ice cubes and freezing water are examples of change of what? Choices: - volume - role - role - state A:
Answer: state

*Question*
Q: What type of energy occurs by splitting the nuclei of radioactive uranium? Choices: - microwave - atomic - kinetic - nuclear A:
**Answer**
nuclear

(Q).
Q: When energy is captured or transformed, it inevitably degrades and becomes what less useful form of energy? Choices: - chemical - temperature - motion - heat A:
(A).
heat