An atom has 20 electrons and 20 neutrons. What is the mass of this atom?

A. 20
B. 10
C. 80
D. 40


Answer: D

Biology & Microbiology

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Which of the following statements is typically false?

A. DNA is double stranded, whereas RNA is single stranded. B. The process that goes from RNA to protein is called translation. C. The process that goes from DNA to RNA is called transcription. D. DNA contains the same nucleotides as RNA.

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Which of the following is true of phloem?

a. conducts water up the plant b. conducts mineral ions up the plant c. connects with roots d. connects with leaves e. transports plant-manufactured organic products

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Type A blood could donate to which of the following blood types?

A) A, AB, and O B) A only C) A and AB D) A and O E) B only

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Which of the following proteins would you expect to be a coded for by a proto-oncogene?

A) a growth factor receptor B) a DNA repair protein C) a protein involved with the G1 checkpoint D) a caspase E) a DNA replication protein

Biology & Microbiology