List the four basic characteristics of chordates. .
What will be an ideal response?
Dorsal hollow nerve cord, gill slits, postanal tail, and a notochord at some point in their life span.
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Of the following bacterial species, which is associated with a serious diarrheal illness with high mortality rates among some populations?
a. E. coli b. Shigella spp. c. Salmonella spp. d. Vibrio spp.
Photosynthesis occurs in chloroplasts of prokaryotes.
Answer the following statement true (T) or false (F)
What caused the greatest mass extinction, in terms of species lost, at the end of the Permian?
a. global cooling b. sea level decline c. asteroid impact d. overhunting by humans e. increased volcanic activity
Glycosylation of hydroxymethylcytosine residues protects phage T4 DNA from cleavage by bacterial restriction enzymes.
Answer the following statement true (T) or false (F)