Which weather pattern is characteristic of a La Niña event?
a. high pressure over the western Pacific
b. high ocean surface temperatures
c. warm and dry weather in the southern U.S.
d. ocean surface waters moving from west to east
e. air movement from west to east
ANSWER: c
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Which is most likely to happen to a human polyploid?
a. natural abortion b. death around the age of 1 year c. survival until the early teens d. survival until the mid-thirties e. death around the age of 1 month
Nondisjunction can occur at either the first or second division of meiosis. XXY individuals could arise from nondisjunction at the ________ meiotic division in the ________.
A) first; mother B) second; mother C) first; father D) second; father E) More than one of the choices could give rise to XXY individuals.
Some viruses have an additional coating on the outside of the capsid, acquired from the host cell. What is this additional coating called?
a. plasma membrane b. nucleic coat c. envelope d. proteoglycan
How long does it take for a biofilm to form?
a. seconds to minutes b. minutes to hours c. hours to days d. days to months e. months to years