Carbohydrates are polymers formed of structural units called:  

A.  amino acids.
B.  fatty acids.
C.  nucleotides.
D.  glycerols.
E.  monosaccharides.


E.  monosaccharides.

Biology & Microbiology

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Electron flow through the transport chains causes hydrogen ions to be pumped from:

a. the matrix to the intermembrane space b. the cytoplasm to the intermembrane space c. the intracellular fluid to the cytoplasm d. cytoplasm to the mitochondria e. the intermembrane space to the matrix

Biology & Microbiology

The Earth’s shifts the angle of its axis

approximately every ___ years.

a. 4,000 b. 40,000 c. 400,000 d. 4,000,000 e. 4,000,000,000

Biology & Microbiology

For the purposes of this question, assume that being Rh+ is a consequence of D and that Rh- individuals are dd. The ability to taste phenylthiocarbamide (PTC) is determined by the gene symbolized T (tt are nontasters)

A female whose mother was Rh- has the MN blood group, is Rh+, and a nontaster of PTC, and is married to a man who is MM, Rh-, and a nontaster. List the possible genotypes of their children. Assume that all the loci discussed in this problem are autosomal and independently assorting.

Biology & Microbiology

Probable factors that affect the passage of materials across cell membranes include all of the following except ____________.

a. concentration b. size c. color d. charge

Biology & Microbiology