White blood cells engulf bacteria using _____
A) phagocytosis
B) pinocytosis
C) osmosis
D) receptor-mediated exocytosis
A
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Which one of the following is nottrue of tRNA molecules?
A. tRNA molecules are single-stranded RNA. B. The 3'-terminal nucleotide of tRNA is the site of amino acid attachment. C. The anticodon arm of tRNA contains a three nucleotide sequence that is identical to a specific mRNA codon. D. tRNA molecules contain the unusual nucleotides dihydrouridine, pseudouridine, and ribothymine.
After yet another patron dripped sweat on her desk, the clerk at the gym complained, "It's gross working at a gym, with everyone sweating all the time." "Yes," the manager replied, "and it's probably costing us more for ________, but I'll bet we're saving on ________."
A. weight machines; treadmills B. towels; heating C. the water cooler; towels D. the water cooler; air conditioning
Which class of pattern-regulating genes is responsible for specifying organs and appendages?
A. homeotic B. maternal C. segmentation D. None of the choices is correct.
Using the accompanying diagram, which of the following corresponds to the +1 nucleotide?
A) A B) B C) C D) F E) G