When these enzymes bind to a restriction site, they cut the DNA molecule into two molecules.
A. polymerases
B. ligases
C. restriction enzymes
D. helicases
C. restriction enzymes
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If you could travel in a time machine back to the Cambrian Explosion, which animals would you expect to see commonly? Check all that apply.
_____ sponges. _____ birds. _____ reptiles. _____ arthropods. _____ flatworms.
Most components of energy conversion systems evolved very early; thus, the most fundamental
aspects of energy metabolism tend to be: a. quite different among a diverse group of organisms. b. very different among plants and animals. c. the same among the autotrophs but different among heterotrophs. d. the same among prokaryotes but different among eukaryotes. e. very similar in a wide range of different organisms.
In meiosis, chromosomes containing sister chromatids (not homologous chromosomes) align along the center of the cell during
a)prophase I. b)prophase II. c)interphase II. d)metaphase I. e)metaphase II.
Which common hospital pathogen is able to grow abundantly in soap dishes?
A. Salmonella B. Hemophilus influenzae C. Escherichia coli D. Pseudomonas E. Mycobacteria tuberculosis