A student is observing microorganisms in a sample of pond water. One organism of interest has an obvious nucleus, snall oval structures containing a green pigment, and does not appear to be motile. In which of the following groups would this microbe most likely be classified?
A. Eukaryotes (Fungi)
B. Bacteria
C. Eukaryotes (Algae)
D. Eukaryotes (Protozoa)
E. Archaea
Answer: C
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Archaeal promoters are most similar to those of ________.
A. eukaryotes B. bacteria C. viruses D. both viruses and bacteria
Answer the following statements true (T) or false (F)
1. Restriction enzyme digestion of DNA is NOT required to perform a Southern blotting experiment. 2. The main goal of polymerase chain reaction (PCR) is to generate many copies of DNA. 3. DNA microarrays (gene chips) are only capable of monitoring the expression of one gene at a time. 4. 2-D gel electrophoresis separates proteins of interest based solely on molecular weight.
The Pribnow box of E. coli ________.
A. is centered between 7 and 13 bp upstream of the start codon B. is located at the site of addition of poly (A) in eukaryotic mRNAs C. is centered approximately 10 bp upstream of the start site of transcription D. is centered approximately 35 bp upstream of the start site of transcription
Which of the following parasites is not generally microscopic in its mature form, even though microbiologists usually study them?
A. amoebae B. toxoplasmas C. helminths D. leishmanias E. cyclosporas