Human female germ cells form
a. before birth.
b. shortly after birth.
c. at puberty.
d. during late teenage-hood.
e. at fertilization
A
Biology & Microbiology
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a. RNA b. carbohydrates c. lipid d. oxygen e. hydrogen peroxide
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Pasteurization is used to ________.
A. retard spoilage B. kill any pathogens present C. kill any pathogens present and retard spoilage D. sterilize beverages
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During embryonic development, the proembryo develops from the basal cell
____________________ Indicate whether the statement is true or false.
Biology & Microbiology
What kind of organisms likely perished due to the increase of oxygen in the atmosphere three billion years ago?
a. heterotrophs b. cyanobacteria c. obligate aerobes d. obligate anaerobes e. facultative anaerobes
Biology & Microbiology