Q: Like other amphibians, frogs generally lay their eggs in moist environments, which are required since the eggs lack what feature? Choices: - nucleus - tubes - membrane - shells A:
shells

Q: What is the total number of codons? Choices: - 45 - 51 - 68 - 64 A:
64

Q: Q: What are the smallest particles of water called? Choices: - hydrogen - atoms - ions - molecules A:
A: molecules

Question: Q: The effect of gravity on circulation means that it is harder to get blood up from the legs as the body takes on this? Choices: - frontal orientation - dorsal orientation - horizontal orientation - vertical orientation A:
Answer: vertical orientation

*Question*
Q: What is the first digestive organ that food enters? Choices: - stomach - tongue - esophagus - mouth A:
**Answer**
mouth

*Question*
Q: What is the outer layer of the adrenal gland called? Choices: - adrenal skin - zona reticularis - medulla - adrenal cortex A:
**Answer**
adrenal cortex