A bacterial cell must have ___________ in order to transfer portions of its chromosome to another cell.
A. an F factor
B. a high frequency of combination plasmid
C. a recombination factor
D. growth enhancement genes
E. all of these components
A. an F factor
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Bread making requires yeast, flour and water. Why is yeast used?
A. It makes the bread healthier as yeast is a source of vitamins. B. It makes the bread rise due to the carbon dioxide released during ethanol fermentation. C. It makes the bread rise due to the carbon dioxide released during cellular respiration. D. It makes the bread sour due to lactic acid fermentation. E. It makes the bread crunchy.
The specific types of homologies used to develop phylogenies are shared derived characters or ____
Fill in the blank with the appropriate word.
The point at which the rate that a deleterious allele is being eliminated from a population by natural selection is in equilibrium with the rate at which the deleterious allele is being replaced by a new mutation is termed ________
A) mutation-dependent selection B) frequency-dependent selection C) mutation-dependent equilibrium D) mutation-selection balance
Which statement describes an atom of oxygen?
A) Most naturally occurring atoms of oxygen contain 9 neutrons. B) All atoms of oxygen include 8 protons. C) Nitrogen-15 is an isotope of oxygen. D) Its atomic weight is the same as its atomic mass. E) Its chemical symbol is Ox.