What category of enzyme adds a CCA to the 3' OH of tRNAs?
A. uridylyltransferase
B. glycosyltransferase
C. ligase
D. guanylyltransferase
E. nucleotidyltransferase
E
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The single-factor crosses performed by Mendel support the observation that
A. the two alleles for a given gene are distributed randomly among an individual's gametes. B. the two alleles for a given gene are found within the same gamete. C. if the recessive alleles for two different genes are on the same chromosome, they will never be found within the same gamete. D. only the dominant alleles for a given trait are found in an organism's gametes. E. if the dominant alleles for two different genes are on different chromosomes, they will never be found within the same gamete.
In disorders caused by multiple trinucleotide repeats, the more repeats there are the later the symptoms
of the disorder become manifested. Indicate whether the statement is true or false.
The White Cliffs of Dover, a famous landmark in England, is made of limestone, which is really a collection of the pore-studdedshells (tests) of
A. spirochetes. B. diatoms. C. brown algae. D. foraminifera. E. dinoflagellates.
In the section "Investigating Life: Solar-Powered Sea Slugs", the sea slug Elysia chlorotica is green because it contains
A. enzymes that produce green light. B. hem E. C. algal chromosomes. D. pigments that reflect red and blue light. E. chlorophyll.