Relaxation of the ________ releases urine from the body
Fill in the blank(s) with correct word
external urethral sphincter
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What do we call molecules involved in long-distance signaling?
A. kinases B. transcription factors C. hormones D. response elements E. receptors
Which of the following is a terpene?
A) testosterone B) vitamin A C) glycerol D) phenanthrene E) dolichol
A hydrogen bond is an attraction between a(n) ____ hydrogen atom and another hydrogen atom taking part in ____
a. covalently bonded; the same polar covalent bond b. ionically bonded; the same polar covalent bond c. covalently bonded; a separate polar covalent bond d. ionically bonded; a separate nonpolar covalent bond e. nonpolar covalently bonded; a separate nonpolar covalent bond
When experimenting with Streptococcus pneumoniae in the 1920s, Griffith concluded that some substance from the dead S strain bacteria passed to the R strain bacteria, imparting virulence and the ability to form a capsule. Avery and others continued the search for the substance that "transformed" the R strain into the S strain.Hypothesis I:Genetic material or "transforming substance" is protein.Hypothesis II:Genetic material or "transforming substance" is RNA.Hypothesis III:Genetic material or "transforming substance" is DNA.An experiment was performed in which DNAase enzyme digestion prevented transformation. This finding
A. supports Hypothesis I. B. supports Hypothesis II. C. supports Hypothesis III. D. rejects Hypothesis I only. E. rejects Hypothesis II only. F. rejects Hypothesis III only. G. does not support any of these hypotheses.