The closest living relatives of birds are ____

a. mammals
b. lizards
c. turtles


d. crocodiles
e. amphibians


ANSWER: d

Biology & Microbiology

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Which of the following can serve as reservoirs for pathogens?

a. water b. soil c. animals d. humans e. fomites f. food

Biology & Microbiology

Liquids must absorb energy

What will be an ideal response?

Biology & Microbiology

Why might a racial group have fairly consistent skin colors but inconsistent alleles for the skin colors?

A. Few allele variations between groups are expected if races were genealogical species. B. Analysis of the single gene involved in skin color shows a long separation between groups. C. Skin color is polygenic and the same skin color may be produced by different gene pools. D. No relationship exists between alleles and skin color.

Biology & Microbiology

We do not have any fossils of unicellular prokaryotes. The first organisms to appear in the fossil record are unicellular eukaryotes.

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

Biology & Microbiology