The main problem for those with cystic fibrosis involves ____

a. mucus sticking to dry surfaces
b. jerky muscle contractions
c. constant thirst
d. salt accumulations between tissues


e. low pH in tissues preventing proper enzymatic activity


ANSWER: a

Biology & Microbiology

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In almost all organisms that have been studied, the genes in Hox clusters:

A. are arranged on chromosomes in the same order as their products function along the anterior-posterior segments of the embryo. B. are expressed in a sequence that is independent of their linear organization along the chromosome. C. each contain a unique homeodomain, the the products of which are very different among organisms. D. are arranged on the chromosomes in a sequence that is independent of the order in which their products function along the anterior-posterior axis of the embryo. E. None of these choices are correct.

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What gene(s) is/are encoded in the Xic?

A. Xce B. Xist C. Tsix D. Both the Tsix and Xist genes are in the Xic region

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The ____ contains the greatest volume of ocean water

a. oceanic province b. intertidal zone c. euphotic zone d. neritic province e. limnetic zone

Biology & Microbiology

The sugar in DNA is deoxyribose while the sugar in RNA is ribose.

Answer the following statement true (T) or false (F)

Biology & Microbiology