Q: What chemical affects the onset of puberty and duration? Choices: - steroids - enzymes - acids - hormones A:
hormones

(Question)
Q: What is the outermost layer of the skin? Choices: - dermis - nexus - callus - epidermis A:
(Answer)
epidermis

Ques: Q: What does some amphibians have as juveniles but not as adults living on land? Choices: - microscopic line system - kinetic line system - vertical line system - lateral line system A:
Ans: lateral line system

(Q).
Q: Some bacteria also have tail-like structures called what? Choices: - plasmids - sporangia - nuclei - flagella A:
(A).
flagella

Ques:Q: Lampreys use their sucker to feed on what part of other fish species? Choices: - heart - brain - liver - blood A:

Ans:blood

Question: Q: Besides the inner membrane, where are many respiratory enzymes found? Choices: - alveoli - golgi apparatus - cytoplasm - the matrix A:
Answer:
the matrix