True or False: At pH 7.0, NH3 exists as ammonium (NH4+)

a. TRUE
b. FALSE


Answer: A

Biology & Microbiology

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Which of the following is a major risk factor for developing diabetes?

a. geographic location b. obesity c. gender d. exposure to excessive sunlight e. vegetarian diet

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A cactus spine and a pea tendril illustrate homoplasy because both are modified leaves

__________________ Indicate whether the statement is true or false.

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Which of the following was most important to lead to the science of molecular genetics?

a. research since the discovery of the structure of RNA that has led to a more thorough understanding of mutations b. research since the discovery of the structure of DNA that has led to a more thorough understanding of mutations c. research since the discovery of the structure of DNA that has led to a more thorough understanding of genetics d. research since the discovery of the structure of RNA that has led to a more thorough understanding of genetics

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A phospholipid has a hydrophilic head and two hydrophobic tails.

a. true b. false

Biology & Microbiology