Among these choices, what is the most reliable form of birth control?
A. Condoms
B. Abstinence
C. Birth control pills
D. Depo shots
Answer: B. Abstinence
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Which of the following statements about plant development is true?
A. The radial axis of the developing embryo develops before the root-shoot axis. B. A single gene is responsible for the control of all root and shoot formation. C. The MONOPTEROS gene (MP) stimulates chlorophyll synthesis in seeds. D. Gibberellic acid is important in root-shoot axis formation. E. Cells nearest to the suspensor ultimately form the root.
Which type of receptor detects low blood sugar levels, stimulating the organism to eat?
a. mechanoreceptors b. photoreceptors c. chemoreceptors d. thermoreceptors e. nociceptors
Which group of atoms varies from one type of amino acid to another
A) 1 B) 2 C) 3 D) 4
Miller's apparatus synthesized
A. ammonia. B. amino acids. C. carbon dioxide. D. DNA.