The first patent on a living organism was granted in
A) 1790, when the U.S. passed patent law.
B) 1873, for Louis Pasteur's use of yeast.
C) 1900, when Mendel's laws were rediscovered.
D) 1978, when modern biotechnology began with recombinant insulin.
B) 1873, for Louis Pasteur's use of yeast.
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How is plant cell cytokinesis different from animal cell cytokinesis?
A) The contractile filaments found in plant cells are structures composed of carbohydrates; the cleavage furrow in animal cells is composed of contractile phospholipids. B) Plant cells deposit vesicles containing cell-wall building blocks on the metaphase plate; animal cells form a cleavage furrow. C) The structural proteins of plant cells separate the two cells; in animal cells, a cell membrane separates the two daughter cells. D) Plant cells divide after metaphase but before anaphase; animal cells divide after anaphase.
The best technique for detecting chromosomal abnormalities is
A. EST B. FISH C. STS D. SNP
Light suppresses secretion of __________ by the pineal gland in the brain. Fill in the blank(s) with the appropriate word(s)
Some of the enzymes stored in peroxisomes are used to break down
A) a cell when it becomes damaged. B) bacteria and viruses. C) faulty proteins produced by the cell. D) the plasma membrane. E) hydrogen peroxide.