Which of the following is NOT characteristic of a tropical rain forest?
A. warm climate
B. nutrient-rich soil
C. a year-round growing season for plants
D. a tremendous diversity of animal life
E. a location near the equator
Answer: B. nutrient-rich soil
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Which of the following is false about animals?
a. they are multicellular. b. they are heterotrophic. c. they are autotrophs. d. they lack cell walls. e. most can actively move.
Many cancers have a mutation that changes a valine to a glutamic acid in the RAF kinase protein which phosphorylates proteins that promote cell division. This mutant protein is a constitutively active kinase. What type of allele is this mutant allele?
A) hypomorphic allele B) hypermorphic allele C) null allele D) antimorphic allele
If the kidneys cannot excrete enough acid, which condition occurs?
a. metabolic alkalosis b. respiratory acidosis c. metabolic acidosis d. respiratory alkalosis e. compensatory alkalosis
What evolutionary advantage is provided by sexual reproduction?
a. increased genetic diversity b. making clones c. making diploidy possible d. making polyploidy possible e. being able to work with chromosomes