The structure where fertilization takes place is the ____
a. ovary
b. oviduct
c. oviduct
d. cervix
e. uterus
ANSWER: b
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Which of the following statements about plants grown in hydroponic culture is true?
A. They no longer need to transport water through their xylem. B. They cannot be used for commercial purposes. C. They rarely get enough micronutrients. D. They are unable to photosynthesize. E. They are suspended with their roots in a nutrient solution.
The most important quantity necessary for life to form appears to be the existence of ____________ on the surface of the planet
Fill in the blank(s) with correct word
EMB agar is a medium used in the identification and isolation of pathogenic bacteria. It contains digested meat proteins as a source of organic nutrients. Two indicator dyes, eosin and methylene blue, inhibit the growth of gram-positive bacteria and distinguish between lactose fermenting and nonlactose fermenting organisms. Lactose fermenters form metallic green or deep purple colonies, whereas the nonlactose fermenters form completely colorless colonies. EMB agar is an example of which of the following?
A. a selective medium only B. a differential medium only C. a selective medium and a chemically defined medium D. a selective medium, a differential medium, and a complex medium
Which of the following is an organism whose cell(s) lack(s) membrane-bound organelles?
A. nucleolus B. chromatin C. eukaryote D. prokaryote