Which of the following are principles of the cell theory or cell doctrine?
A. All living things are composed of one or more cells.
B. Cells are the smallest unit of living organisms.
C. New cells come only from pre-existing cells by cell division.
D. Cells are the smallest unit of living organisms and new cells form from pre-existing cells by cell division.
E. All living organisms are composed of one or more cells, cells are the smallest units of life, and new cells come only from pre-existing cells by cell division.
E. All living organisms are composed of one or more cells, cells are the smallest units of life, and new cells come only from pre-existing cells by cell division.
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Louis Pasteur developed the vaccine(s) for
A) anthrax. B) fowl cholera. C) rabies. D) anthrax, fowl cholera, and rabies.
Before Darwin, ____
a. no one had conceived of biological evolution b. Lamarck wrote about biological evolution, but had the mechanism wrong c. Malthus developed a theory of evolution d. Lamarck proposed the idea of natural selection, but was ignored e. Malthus demonstrated the progression of fossils in sedimentary rocks
The gray matter that surrounds cells 3, 4, 5 and 6 indicates the
a. primordial germ cell. b. spermatogonium. c. Leydig cell. d. Sertoli cell. e. Ballack cell.
Mitochondria in Eukarya originated from
a. Archaea. b. cyanobacteria. c. Proteobacteria. d. purple bacteria.