What extends from the methylguanosine cap at the start of an mRNA to the AUG initiation codon?
a) the first intron
b) the last exon
c) the 5' UTR
d) the last intron
e) the 3' UTR
Ans: c) the 5' UTR
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Ribozymes are ________.
A. catalysts for DNA splicing B. catalysts for RNA splicing C. unique to eukaryotes D. ribosomes which catalyze reactions E. unique to prokaryotes
The lesions in the brains of people with Alzheimer disease are caused by a protein fragment called
___________________. Fill in the blank(s) with the appropriate word(s).
Which of these actions describes secondary growth?
A. growth in height B. development of fruit C. development of leaves and flowers D. development of wood and bark
Which of the following describes changes to the genetic material, but not the genetic sequence, that can be passed on to the next generation?
A. Epigenetic B. Mutation C. Chromosomal damage D. Polyploidy E. Cancer