32. Enzyme molecules are affected by changes in conditions within organisms. Explain how a
prolonged, high body temperature could be fa-
tal to a human. Your answer must include:
• the role of enzymes in the human body
the effect of a high body temperature on en-
zyme activity

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands