18. Which molecule is a Cdk inhibitor or is controlled by p53? a. anti-kinase
b. cyclin
c. p21
d. Rb

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!