One in 20,000 babies is born with which specific cancer of the eye?
a. retinoblastoma.
b. scleral sarcoma.
c. malignant melanoma.
d. rhabdomyosarcoma.
e. lymphoma.
A
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Amanda was successfully treated for the P. aeruginosa infection, but on a subsequent visit to
the hospital, she was infected again. With this second infection, her immune system would ____________________.
a. respond more quickly to the antigen b. immediately start to produce memory cells c. have a reduced response due to recognizing the antigen d. not be able to fight off the infection
. coli strains toxic to humans live in the intestine of ____ without sickening them
I. birds and frogs II. goats and sheep III. cattle and deer
a. I only b. I and II c. II and III d. I and III e. I, II, III
The phylum that includes snails, clams, oysters, and octopuses is the
A. Mollusca. B. Annelida. C. Phoronida. D. Brachiopoda. E. Ectoprocta.
Which numbers identify structures that are found in ALL prokaryotes?
a. 2 and 4 b. 3 and 4 c. 1 and 5 d. 5 and 9 e. 7 and 8