1) The cell membranes of all three domains are composed of straight carbon chains attached to

glycerol by ester linkage.

Answer: FALSE

2) Chloroplasts possess circular DNA and reproduce by binary fission.

Answer: TRUE

3) As molecular techniques improve, scientists are finding it necessary to reclassify some genera.

Answer: TRUE

4) The highest level in the current taxonomic hierarchy is "Kingdom."

Answer: FALSE

5) Pure cultures of the same species are not always identical in all ways.

Answer: TRUE

6) At this point in time, scientists believe the vast majority of the domain Bacteria have been discovered.

Answer: FALSE

7) Once a culture is purified, the next logical step in the process of identifying bacteria is biochemical testing.

Answer: FALSE

8) Serological testing is used for screening bacterial isolates for similarities.

Answer: TRUE

9) Western blotting is an immunological test used to identify the antibodies in the serum of an individual suspected of having Lyme disease.

Answer: TRUE

10) When building a cladogram, the length of the horizontal branch is based on the calculated percent similarity between organisms.

Answer: TRUE