Which enzyme, a combination of several proteins and a molecule of tRNA, acts as the template for the telomere repeat DNA sequence?
What will be an ideal response?
telomerase
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Which fish bones are homologous with an amphibian's front and hind limbs?
a. Tail, pectoral fin b. Pectoral fin, pelvic fin c. Pelvic fin, dorsal fin d. Pectoral fin, dorsal fin e. Gills, pelvic fin
You find a protist that has a single flagellum surrounded by a collar of microvilli. You correctly
conclude that this organism is: a. a cellular slime mold. b. a choanoflagellate. c. a plasmodial slime mold. d. not a unikont. e. not motile.
According to the Centers of Disease Control and Prevention, how many people die from an antibiotic-resistant infection each year?
A. 2 million B. at least 23,000 C. at least 2,300 D. about 2 million people suffer from antibiotic-resistant infections, but no deaths have been recorded. E. 200,000
Which of the following is a serious concern when performing PCR?
A. Restriction enzymes are difficult to obtain in adequate quantities. B. The high temperature needed may denature the DNA. C. Lab personnel may be exposed to radiation. D. PCR is a very time-consuming process. E. Contaminating DNA may be introduced and amplified.