At the end of an experiment, a conclusion is formed based on:
A. the feelings or beliefs of the scientist conducting the experiment
B. the needs of the group funding the experiment
C. the general observations during the experiment
D. the statistical analysis of the experiment
Answer: D
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Ivan Valiela's hypothesis that the growth of salt marsh grass is limited by nitrogen availability was:
a. disproved by the growth of larger and taller grass in his control (nitrogen-fertilized) plots. b. disproved by the growth of larger and taller grass in his experimental (nitrogen-fertilized) plots. c. supported by the growth of larger and taller grass in his experimental (nitrogen-fertilized) plots. d. supported by the growth of larger and taller grass in his control (nitrogen-fertilized) plots. e. unsupported by a poor experimental design.
The arrival of fat-rich chyme to the duodenum stimulates the gall bladder to contract and release _________ into the small intestine.
A. bile B. cholecystokinin C. secretin D. lipase E. chylomicrons
Which of the following is part of the maturation of a eukaryotic mRNA?
1.removal of introns 2.the linking of exons 3.addition of the 5‘ cap 4.addition of the poly A tail 5.All of the options are correct.
Classification schemes will include
a. species. b. genus. c. family. d. phylum. e. all of these.