While working in a soil-testing laboratory, you are given a sample of a "typical" soil to analyze. Which of the following do you correctly conclude is present in the largest amount?
a. water
b. inorganic mineral particles
c. rocks
d. air
e. organic material
b
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Which of the following is nota mechanism for regulating gene expression after the mature RNA transcript is produced?
A. gene silencing by miRNAs B. inhibition of translation initiation C. blockage of the promoter by a repressor protein D. protein degradation
Genetic engineering has produced which of the following animals?
a. wild caught salmon b. pigs c. Dolly the sheep d. cows resistant to mad cow disease e. grass-fed beef
A reflex pathway is the simplest pathway
because it a. involves only one synapse. b. is evaluated and integrated by the medulla, not the cerebrum. c. involves only two or three neurons. d. does not involve the central nervous system in any way. e. includes all of these
The theory of segregation
a. deals with the alleles governing two different traits. b. applies only to linked genes. c. applies only to sex-linked genes. d. explains the behavior of a pair of alleles during meiosis. e. applies only to autosomes.