Aseptic packaging utilizes which of the following to sterilize laminated paper or plastic prior to filling with food?
A) hot HCl solution
B) gamma radiation
C) hot hydrogen peroxide solution
D) X rays
E) autoclave
C
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One group of fruit flies reproduces in August and one group reproduces in September. Which of the
following mechanisms is preventing them from cross breeding? a. hybrid sterility b. genetic isolation c. sexual isolation d. mechanical isolation e. temporal isolation
Animals, like fiddler crabs, that are busiest at dawn or dusk are termed:a
crepuscular. b. nocturnal. c. diurnal. d. lunar. e. asynchronous.
Primary growth at the apical meristems can produce cells that differentiate into each of these cell types, except which?
A. epidermis B. cork cambium C. leaves D. ground tissue E. procambium
What are the two main chemicals secreted by the gastric pits in the stomach?
What will be an ideal response?