A circular molecule of DNA devoid of any histone proteins describes the chromosome of a (an):

A. bacteria
B. yeasts
C. insects
D. flowering plants
E. protozoa


Answer: A

Biology & Microbiology

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In a monohybrid cross

(a) only one trait is being considered. (b) the parents are always dominant. (c) the parents are always heterozygous. (d) no hybrid is produced.

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In which kingdom do humans belong?

a. Eukarya b. Animalia c. Mammalia d. Primates e. Homininae

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Which one of the following statements is TRUE regarding bone?

A) The epiphysis of a long bone is filled with yellow bone marrow. B) Bone is not considered to be a living tissue because it does not contain cells or blood vessels. C) Dense compact bone is located in the center of a long bone. D) Stem cells responsible for the production of blood cells are located in red bone marrow. E) The outer surface of a bone is covered with loose connective tissue.

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In performing a Ziehl-Neelsen's staining techniques, the counterstain is

A. Carbolfuchsin B. Methylene blue C. Malachite green D. Crystal violet E. Safranin

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