What function does a competent cell have that makes it useful in cloning experiments?
A. Competent cells resist transfection by a viral vector.
B. Competent cells repair DNA strands without the aid of DNA ligase.
C. Competent cells utilize transposons as a vector.
D. Competent cells take up DNA from the external environment
D
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Describe the mutualistic relationship that arbuscular mycorrhizae form with plants
What will be an ideal response?
The conversion of pyruvate to acetyl CoA is irreversible. Predict what would happen to fatty acids as a result of this
A. Fatty acids cannot be converted into carbohydrates.
B. Fatty acids cannot be metabolized in the citric acid cycle.
C. Fatty acids can be metabolized in glycolysis.
D. Fatty acids can be converted into carbohydrates.
The neuronal pathways behind gustatory reception most closely parallel those ofÂ
A. light touch. B. limb position. C. vision. D. pain. E. olfaction.
How many unrooted trees are possible for a 13-species tree and a 22-species tree, respectively?
a. more than the stars in the universe c. 15 and 25 b. 105 and 945 d. 13 and 22