True or False: At pH 7.0, NH3 exists as ammonium (NH4+)
a. TRUE
b. FALSE
Answer: A
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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
A cactus spine and a pea tendril illustrate homoplasy because both are modified leaves
__________________ Indicate whether the statement is true or false.
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
A phospholipid has a hydrophilic head and two hydrophobic tails.
a. true b. false