Which of the following regulates salt balance?
A) ADH
B) aldosterone
C) atrial natriuretic hormone (ANH)
D) renin
E) both aldosterone and ANH
E
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Match the terms with the best description. _____ base pair substitution _____ promoter _____ polysome _____ exon _____ genetic code _____ intron _____ base pair deletion
a. protein-coding segment b. causes a shift in the mRNA reading frame c. may result in the replacement of one amino acid for another d. removed before translation e. many ribosomes translating the same mRNA f. complete set of 64 codons g. binding site for RNA polymerase
Most of the ocean's productivity occurs ____.
A. in the open ocean B. in the intertidal zone C. in the pelagic province D. near hydrothermal vents E. in the benthic province
Amphotericin B, nystatin, and the imidazoles are all
A. fungal enzymes. B. antifungal drugs. C. culture media supplements for fungi. D. mycotoxins. E. None of the choices are correct.
A weed in your garden is flowering. When you look very closely, you notice that what you thought was a single flower is actually a very tightly clustered group of tiny yellow tubular flowers. Upon further inspection, you find that each one of these tiny tubular flowers has petals, sepals, stamens, and a single carpel. What is true about this plant?
A. It has incomplete flowers. B. It has imperfect flowers. C. It has inflorescences. D. It has perfect flowers. E. It has complete flowers.