Which of the following was not considered part of the "alphabet of biochemistry" by George Wald?

A) the 20 amino acids
B) the 5 nucleotide bases
C) two sugars
D) three lipids
E) seven proteins


E) seven proteins

Biology & Microbiology

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What is the connection between the work of Mary Lyon and Murray Barr?

What will be an ideal response?

Biology & Microbiology

Likelihood is preferable to parsimony to infer a phylogeny when

A. there is a great deal of homoplasy. B. a researcher wishes to incorporate different models of molecular evolution into phylogenetic estimates. C. evolutionary rates vary greatly among the taxa of interest. D. a researcher wishes to include a measure of confidence in the nodes of the phylogeny. E. All of the above

Biology & Microbiology

Ancient Chinese medicine practices included:

a. molds to prevent and treat disease. b. pus-soaked rags placed in the nose to develop immunity. c. use of gold-salts for rheumatic conditions. d. A, B, and C. e. A and B.

Biology & Microbiology

Each structure labeled 4 in Figure 41-1 is:


a. a node of Ranvier.
b. a cell body.
c. a dendrite.
d. a synaptic terminal.
e. an axon.

Biology & Microbiology