Ques: Q: What are all cells surrounded by? Choices: - cytoplasm - cell substrate - amino acids - cell membrane A:
Ans: cell membrane

Ques: Q: The rest of the energy stored in glucose is lost as what? Choices: - mass - volume - humidity - heat A:
Ans: heat

Ques: Q: The size and symmetry of a beetle's or an elk's antlers or a grasshopper's song communicate rather clearly their state of what? Choices: - society - problem - need - health A:
Ans: health

Ques: Q: What connects the fetus to the placenta? Choices: - womb - fallopian tube - amniotic sac - umbilical cord A:
Ans:
umbilical cord