Q: What were the first forms of life on earth? Choices: - aniryotes - eukaryotes - protists - prokaryotes A:
prokaryotes

Q: Red giants are stars that fuse what element into larger atoms? Choices: - carbon - hydrogen - oxygen - helium A:
helium

Q: Q: What is the term for a mutually beneficial relationship in which one organism lives inside the other? Choices: - parasite - symbiosis - parthenogenesis - endosymbiosis A:
A: endosymbiosis

Question: Q: What structure is found at the top of the head of the sperm that helps it penetrate and fertilize the egg? Choices: - centriole - terminal disc - axial filament - acrosome A:
Answer: acrosome

*Question*
Q: Distance traveled divided by time is equal to what? Choices: - direction - momentum - frequency - speed A:
**Answer**
speed

Q: What events, resulting in death of over half of animal species, have occurred on earth at least five times in the past 540 million years? Choices: - mass migrations - microevolutions - spontaneous mutations - mass extinctions A:
mass extinctions