Who, along with Alfred Wallace, formulated the theory of natural selection?
A) Louis Pasteur
B) Gregor Mendel
C) James Watson
D) William Harvey
E) Charles Darwin
Answer: E
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The Krebs cycle occurs in the mitochondria. There are nine biochemical reactions involved in the Krebs cycle, and they are highly ordered. Select the correct order. (Note: These are abbreviated and do not show NAD, ADP, ATP, or FAD.)
A. acetyl-CoA joins the Kreb cycle and unites with oxaloacetate ®forming citrate ®which forms beta-ketoglutarate ® which forms succinyl-CoA ® which forms succinate ® which forms fumarate ® which forms malate ® which forms oxaloacetate B. acetyl-CoA joins the Kreb cycle and unites with oxaloacetate ®forming citrate ®which forms alpha-ketoglutarate ® which forms succinyl-CoA ® which forms succinate ® which forms malate ® which forms fumarate ® which forms oxaloacetate C. acetyl-CoA joins the Kreb cycle and unites with oxaloacetate ®which forms alpha-ketoglutarate ® forming citrate ® which forms succinyl-CoA ® which forms succinate ® which forms fumarate ® which forms malate ® which forms oxaloacetate D. acetyl-CoA joins the Kreb cycle and unites with oxaloacetate ®forming citrate ®which forms alpha-ketoglutarate ® which forms succinyl-CoA ® which forms succinate ® which forms fumarate ® which forms malate ® which forms oxaloacetate
Eukaryotic cell mRNA transcripts can remain in the cell for hours because they are
A. stable. B. long. C. isolated. D. analogous.
Shallow marine sediments are dominated by
A) Firmicutes. B) Planctomycetes. C) Proteobacteria. D) Tenericutes.
If a man expresses an X-linked recessive trait, ____
a. all of his brothers will also express it b. his father transmitted the trait to him
c. his father carried the trait d. all of his sisters will also express it e. his mother was heterozygous or homozygous for the trait