The claws (fangs) on the foremost trunk segment of centipedes have a function most similar to that of _____
A) rhinophores
B) dorsal plummules
C) cerata
D) chemoreceptors
C
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Why is hypertension common among elderly people?
a. It arises from years of improper diet. b. It is due to constant exposure to chronic diseases. c. As blood vessels age, blood vessels stiffen and lose flexibility. d. Risk factors tend to increase with increasing age
Huntington disease involves multiple trinucleotide repeats of the nucleotide sequence _____________. Fill in the blank(s) with the appropriate word(s)
Imagine you wanted to use a human genomic DNA library to clone the human gene for insulin. You will be using the rat insulin gene sequence as your DNA probe. In what order would you perform the following steps to accomplish this goal? 1
Use autoradiography to identify colonies containing DNA that hybridized to the probe 2. Grow transformed cells on media with antibiotics and X-gal for blue-white screening 3. Ligate genomic DNA and vector DNA 4. Cut genomic DNA and vector DNA with restriction enzymes 5. Hybridize library DNA with labeled probe for the rat insulin gene 6. Transform bacteria with recombinant plasmid A) 2, 3, 6, 5, 4, 1 B) 1, 2, 5, 6, 4, 3 C) 4, 3, 6, 2, 5, 1 D) 4, 3, 5, 2, 6, 1 E) 2, 6, 5, 3, 1, 4
Identify three possible components of a DNA nucleotide.
A) deoxyribose, phosphate group, thymine B) cytidine, phosphate group, ribose C) adenine, phosphate group, ribose D) deoxyribose, phosphate group, uracil E) guanine, phosphate group, ribose F) cytosine, phosphate group, ribose