According to studies, which of the following makes two-thirds of telephone callers angry? a. Talking slowly
b. Leaving a message
c Being put on hold
d. Having to repeat themselves

After mork has gone through one full sleep cycle, his heart beats faster, his breathing grows fast and irregular, and his closed eyes begin to move back and forth. a researcher who is monitoring mork’s eeg activity will most likely see waves.

How is health different for most people in this country today from what it was for people born in 1900? a. people have a shorter life span. b. people today work harder to survive. c. people today live in poorer sanitary conditions. d. people today can focus less on day-to-day survival and more quality of life.

Which of the following represents a difference between viruses and viroids? a) viruses infect many types of cells, whereas viroids infect only prokaryotic cells. b) viruses have capsids composed of protein, whereas viroids have no capsids. c) viruses have genomes composed of rna, whereas viroids have genomes composed of dna. d) viruses cannot pass through plasmodesmata, whereas viroids can.