Which of the following cells would undergo osmotic lysis?
a. gram- cell in distilled water
b. gram- cell in salt water
c. gram+ cell in distilled water plus penicillin
d. gram+ cell in salt water
Answer: c. gram+ cell in distilled water plus penicillin
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The logic behind sequential polar body analysis is based on
A) Darwin's theory of natural selection. B) Mendel's law of segregation. C) Mendel's law of independent assortment. D) the rules of the genetic code.
The operon segment composed of the gene that codes for a protein repressor is called the ________.
A. regulator B. structural locus C. operator D. promoter
The familiar growth form represented by edible mushrooms, as well as some poisonous mushrooms, is associated with the phylum.
A. Zygomycot B. Ascomycota C. Chytridiomycota D. Basidiomycota E. Glomeromycota
The important feature of all cells that react to a specific hormone is (are) the
a. type of blood supply they receive. b. proximity of the endocrine gland. c. presence of an appropriate receptor molecule. d. characteristics of their plasma membranes. e. presence of specific genes responsive to the hormone.