Actin and myosin filaments are both present in the dense region called the
A. H zone.
B. I band.
C. A band.
D. M band.
E. Z line.
Answer: C
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An agar plate for counting colonies and maximizing statistical validity should ideally contain
A) 1 to 100 colonies. B) 50 to 100 colonies. C) 30 to 300 colonies. D) 100 to 1000 colonies.
Four of the following elements make up the majority of atoms in living things. Which element is the
exception?
a. carbon b. hydrogen c. iron d. nitrogen e. oxygen
The valve between "C" and "E" is the
a. right AV valve. b. right pulmonary valve. c. left AV valve. d. left pulmonary valve. e. aortic valve.
Because attenuated live vaccines contain viruses that are less virulent, many booster vaccines must be given to produce an effective immune response.
Answer the following statement true (T) or false (F)