While on his voyage on the HMS Beagle, Darwin was strongly influenced by this book.
A. Encyclopedia Britannica
B. The Origin of Species by Means of Natural Selection.
C. The Beagle
D. Principles of Geology by Charles Lyell
D. Principles of Geology by Charles Lyell
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RNA splicing provides an opportunity for regulating gene expression because:
A. the same exons may be spliced together in different sequences to produce different proteins from the same primary transcript. B. the same introns may be spliced together in different sequences to produce different proteins from the same primary transcript. C. a spliceosome in one cell can "see" as an intron what another spliceosome in another cell "sees" as an exon, allowing different proteins to be produced from the same primary transcript. D. methylation of spliceosomes controls how rapidly primary transcripts are processed and sent to the cytoplasm. E. methylation of the polyA tail controls how rapidly the primary transcript can be broken up and spliced back together again.
When the substrate is bound to the enzyme, the shape of the enzyme may change slightly, leading to
A. an induced fit. B. more possible products of the reaction. C. more permanent binding through intimate total contact. D. a great range of possible catalytic activities. E. a greater supply of activation energy.
Bands of connective tissue that help muscles attach to bones are termed ________
A) ligaments B) fibrocartilage C) cartilage D) tendons
Human asymptomatic carriers are common in
A. elephantiasis. B. balantidiasis. C. trypanosomiasis and leishmaniasis. D. amebiasis and trichomoniasis. E. cryptosporidiosis and malaria.