Which of the following is not a constituent of the nucleus?
A. pores
B. envelope or membrane
C. chromosomes
D. chromatin
E. protein modifying enzymes
E. protein modifying enzymes
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Two major types of protein secondary structures are referred to as:
a. amino and carboxyl. b. ? helix and ? sheet. c. elementary and primary. d. residual and permanent. e. ionic and covalent.
A cross between homozygous purple-flowered and homozygous white-flowered pea plants results in offspring with purple flowers. This demonstrates
A) the blending model of genetics. B) true-breeding. C) dominance. D) a dihybrid cross. E) the mistakes made by Mendel.
Which of the following diseases is considered an emerging disease because it was unknown before 1987?
A) anaplasmosis B) Brill-Zinsser disease C) murine typhus D) Rocky Mountain spotted fever E) lymphogranuloma venereum
The actively replicating form of chlamydias are known as
A. elementary bodies. B. reticulate bodies. C. inclusion bodies. D. initial bodies. E. morula.