What would you assume if you found RNA transcripts of lactose-utilizing genes within E. coli?
A) Lactose has bound to the lac operon activator.
B) Lactose is present in the cell.
C) The lac operon activator protein is present in the cell.
D) The lac operon repressor protein is absent in the cell.
B
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Any mutation that increases the risk of disease in an individual is known as a ____ for that disease
Fill in the blank with the appropriate word.
The conventional low-temperature holding procedure used in the pasteurization of milk involves holding the milk at 62.8oC for ________ minutes.
A. 60 B. 30 C. 5 D. 15
Has this cell undergone meiosis?
a. yes, because there are no duplicated chromosomes b. no, because homologous chromosomes are present c. yes, because homologous chromosomes are not present d. no, because the diploid number is 2
One of the two main angiosperm clades, the ____, has about 60,000 species that are characterized by a single
cotyledon and pollen grains with one groove; additionally, most have parallel-veined leaves.
a. eudicotsb. laurels c. monocots d. water lilies e. magnoliids