In 1908, chemist Kikunae Ikeda identified a new taste modality he called "umami," or "delicious" in Japanese. It gives a savory flavor to meat, seaweed, and tomatoes. What molecule is responsible for umami?
A. Glutamate
B. Fe+2 ions
C. Na+ ions
D. Mg+2 ions
E. H+ ions
Answer: A
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Which of the following components is NOT
essential for DNA cloning?
a. plasmids b. ligases c. helicases d. DNA fragments e. restriction enzymes
Assume that a species has a diploid chromosome number of 24. The term applied to an individual with 36 chromosomes would be triploid
Indicate whether the statement is true or false
For an atom that is NOT an ion, which of the following must be TRUE?
a. the number of electrons equals the number of protons b. the number of protons equals the number of neutrons c. the number of electrons equals the number of neutrons
Meiosis differs from mitosis because _______________.
a. meiosis occurs all over the human body b. meiosis results in diploid daughter cells c. DNA replicates before the start of meiosis d. meiosis involves two cell divisions