The letter B" in the above figure represents its
a. shell.
b. mantle.
c. gills.
d. siphon.
e. none of these
C
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Mountainous coastlines tend to be associated with narrow continental shelves
Indicate whether the statement is true or false
In plants, the average expression of genes involved in cold tolerance is _________.
A. highest just before daytime hours B. lowest just before nighttime hours C. highest just before nighttime hours D. constant during nighttime and daytime hours E. the constant during nighttime hours
A woman uses a home pregnancy test kit that tests for hCG hormone in urine. She knows this is a type of antibody assay from the kit brochure. Antibodies reacting with the hormone produce two lines on the test strip. What specific type of antibody assay does this represent?
A) a direct immunofluoresence test B) a complement fixation test C) an immunochromatographic assay D) an ELISA E) a neutralization assay
A consequence of asexual reproduction in a plant is that __________.
A. pollen dispersal is critical to survival B. a partner is needed for reproduction C. its entire genetic legacy can remain intact D. gametes are produced in large numbers