When a protist possesses two flagella, both are generally used for propulsion. Assuming that a flagellum containing a crystalline rod cannot undulate back and forth, and assuming that two undulatory flagella can produce more effective locomotion than can a single flagellum, which of these organisms should have the least effective locomotion?
a. golden algae
b. dinoflagellates
c. Euglenids
d. Chlamydomonas
e. oomycetes
Ans: c. Euglenids
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Which one of the following best describes why genome sequencing can be complicated by repeated sequences?
A. The repeated sequences are often longer than the sequences obtained by automated sequencing. B. Automated sequencing devices interpret repeated sequences as a single sequence. C. Repeated sequences artificially inflate the genome size, leading to an exaggerated interpretation of the complexity of the organism. D. The repeated sequences are too small to gather usable sequence information from. E. All of the answer options describe why genome sequencing can be complicated by repeated sequences.
EcoRI and HindIII are ________.
A. palindromes B. reverse transcriptases C. restriction endonucleases D. ligases E. DNA polymerases
Fill in the blanks to complete the following statements
_______________ is an inflammatory condition of the large and small airways of the tracheobronchial tree that occurs in infants. ? Fill in the blank(s) with correct word
Scientists like to use fluorescent proteins for various types of recombinant DNA procedures. You have a very small amount of the gene for a fluorescent protein. You'd like to make a fluorescent bacterium (!). Which of the following represents the correct sequence of procedures that you would use?
a. Transform the vector into the bacteria. Amplify the gene using PCR. Insert the gene into a plasmid vector. b. Amplify the gene using PCR. Transform the vector into the bacteria. Insert the gene into a plasmid vector. c. Amplify the gene using PCR. Insert the gene into a plasmid vector. Transform the vector into the bacteria. d. Insert the gene into a plasmid vector. Amplify the gene using PCR. Transform the vector into the bacteria.