What effect does atrazine have on frogs?
a. it alters their sexual development
b. it causes them to grow extra limbs
c. it increases their sex drive
d. it causes blindness
e. it causes more than one of these
A
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Which of the following encompasses the other two?
a. cancer b. neoplasm c. tumor
Enzymes
a. control the speed of a reaction. b. change shapes to facilitate certain reactions. c. may place physical stress on the bonds of the substrate. d. may require cofactors. e. do all of these.
Which of the following would be an indication that evolutionary change is occurring within a species?
A. The number of organisms in the species is increasing. B. New learned behavior patterns are appearing. C. No mutations have occurred within individuals of the species. D. Some alleles have been lost from the species.
Which of the following is NOT a nitrogenous waste product produced by the excretory systems of animals?
A. ammonia B. urea C. bile pigments D. uric acid