Escherichia coli biochemical studies have added immeasurably to:
a. the definition of genes.
b. the definition of gene activities.
c. the identification of biochemical pathways.
d. all of these
e. none of these
D
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Which of the following statements about sister chromatids is TRUE? rev:
A. Sister chromatids are produced during mitosis. B. Sister chromatids are held together by complementary base pairing of DNA at the centromere. C. Sister chromatids are exact copies of each other and are formed just prior to cell division. D. After mitosis, sister chromatids contain the same genes, but they may have different alleles. E. All of these statements about sister chromatids are TRUE.
What is the function of antidiuretic hormone?
a. It increases the permeability of the collecting ducts to sodium so more is reabsorbed. b. It causes a high volume of less concentrated urine to be produced. c. It increases aldosterone secretion. d. It decreases renin secretion. e. It increases the permeability of the collecting ducts to water so more is reabsorbed.
Blood is a type of connective tissue that contains fibers and cells suspended in a ________ matrix
Fill in the blank(s) with correct word
What is the most common source of saturated fats?
a. fish b. animal products c. deaf-leaf vegetables c. cereal grains