Why is each element unique with respect to its chemical properties? Each element has a distinctive _____

A) atomic mass
B) number of electrons
C) number of protons
D) number of neutrons
E) radioactive property


Answer: C

Biology & Microbiology

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Each of the V domains in immunoglobulins has ________ complementarity-determining regions

A) one B) two C) three D) four

Biology & Microbiology

Which of the following genotypes would result in a true-breeding stock?

A. AA or Aa or aa B. Aa, but not AA or aa C. AA, but not Aa or aa D. Aa, but not AA or aa E. AA or aa, but not Aa

Biology & Microbiology

How many covalent bonds do noble gases form in nature?

a. Noble gases may form as many as three covalent bonds. b. Noble gases may form up to eight covalent bonds. c. Noble gases do not form covalent bonds with other atoms. d. Noble gases only form single bonds with other noble gases.

Biology & Microbiology

Each of the following is typical characteristics of an integral membrane protein transmembrane segment except

A) ?-helical structure. B) 20–30 amino acids long. C) composed primarily of hydrophobic amino acids. D) amphipathic. E) All are characteristics of a typical transmembrane segment.

Biology & Microbiology