The fossil record is incomplete because
a. very few organisms were preserved as
fossils.
b. organisms tend to decay before becoming a
fossil.
c. animals with hard parts are preserved more
easily.
d. geologic processes may destroy fossils.
e. all of these are true.
E
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Chlorhexidine
A. is a member of the biguanides. B. is extensively used in antiseptics. C. is ineffective against vegetative bacteria. D. is limited in use due to its high toxicity. E. is a member of the biguanides AND is extensively used in antiseptics.
Muscle fibers that are diagonal to the long axis of the body.
a) frontal b) sagittal c) transverse d) oblique e) midsagittal
Nucleosomes are best described as:
a. eukaryotic DNA associated with histone proteins. b. prokaryotic DNA associated with nonhistone proteins. c. eukaryotic DNA associated with nonhistone proteins. d. prokaryotic DNA associated with histone proteins. e. eukaryotic DNA associated with scaffolding proteins.
How is a typical prokaryotic genome similar to a eukaryotic genome?
A. Both are composed of multiple, linear chromosomes. B. Both are composed of circular chromosomes. C. Both contain chromosome with a single origin of replication. D. Both are composed of DNA packaged in the nucleus. E. Both are composed of double-stranded DNA.