During metaphase, ________
A) the nuclear envelope breaks up
B) sister chromatids separate
C) centromeres divide
D) chromosomes line up in the middle of the cell
D
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Most eukaryotic genes are cloned directly into the vector for expression in prokaryotes
Indicate whether this statement is true or false.
Microbial ________ are scientists who investigate the synthesis of antibiotics and toxins, the production of energy with microorganisms, and the ways in which microorganisms survive harsh environmental conditions.
Fill in the blank(s) with the appropriate word(s).
A growth medium that favors the growth of some microorganisms but inhibits the growth of other microorganisms is a ________ medium.
A. neither selective nor differential B. selective and differential C. selective D. differential
Animals need two types of organic precursors from their food, __________, to serve as the raw materials for the synthesis of larger organic molecules.
a. organic hydrogen and organic oxygen b. organic carbon and organic nitrogen c. organic carbon and organic hydrogen d. organic carbon and organic oxygen e. organic nitrogen and organic oxygen