Q: A yolk sac replaces what structure for nourishing a marsupial embryo? Choices: - uterus - glucose - Stomach - placenta A:
placenta

Q: Female monotremes lack a uterus and vagina. instead they have what? Choices: - endometrium - placenta - urethra - cloaca A:
cloaca

Q: Normal body temperature is ideal for most of what type of reactions? Choices: - gas - plasma - theoretical - biochemical A:
biochemical