The definition of a generation is _____
A) twenty years
B) the average time between a mother's first offspring and her daughter's first offspring
C) the average time between a father's first offspring and his son's first offspring
D) the average time between parents' first offspring and their child's first offspring
Answer: B
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Regions of the genome that are inactive often have ________ of C nucleotides.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not a lipid?
a. Fatty acid b. Glucose c. Oil d. Steroid e. Wax
Which substances are the most plentiful biological
molecules in the biosphere? a. carbohydrates b. salts and minerals c. proteins d. fats e. nucleic acids
Recently a methanotrophic proteobacterium was reported that oxidizes methane in anoxic environments by coupling methanotrophy with nitrite reduction, known as ________. In this process of reducing nitrite (NO2-) to nitrogen gas (N2), molecular oxygen is released within the microbe, which it harnesses for methane oxidation.
Fill in the blank(s) with the appropriate word(s).