The final step in a Sanger DNA sequencing reaction is to run the DNA fragments on a gel. What purpose does this serve?
A) It adds ddNTP to the end of each DNA fragment.
B) It changes the length of the DNA fragments.
C) It separates DNA fragments based on their charge.
D) It separates DNA fragments generated during the sequencing reaction based on one-nucleotide differences in their size.
Answer: D
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Sports physiologists at an Olympic training center wanted to monitor athletes to determine at what point their muscles were functioning anaerobically. They could do this by checking for a buildup of _____.
a. ATP b. lactic acid c. carbon dioxide d. ADP e. oxygen
When bar-headed geese fly at very high altitudes (possibly over Mount Everest!), they breathe very thin air where the partial pressure of oxygen is very low compared to that at sea level. Which of the following adaptions would help the geese efficiently
exchange gases when flying at high altitudes? A) hemoglobin that has a high affinity for oxygen B) hemoglobin that has a low affinity for oxygen C) hemoglobin that has a high affinity for carbon dioxide D) hemoglobin that has a low affinity for carbon dioxide
Organisms that require organic sources of carbon and energy are called (chemoheterotrophs/chemoautotrophs/autotrophs)
What will be an ideal response?
As part of your independent study in field biology, you are sent to a small, inland sea. In one of your samples, you discover a small eel-like creature. It has a stiff, rod-shaped structure running the length of its dorsal side, with a line of nervous
tissue running along with it. You would begin the process of classifying this organism by placing it in phylum: A) Vertebrata. B) Cnidaria. C) Arthropoda. D) Mollusca. E) Chordata. Refer to the scenario below, and then answer the following question(s). As part of your independent study in field biology, you are sent to the seashore to take samples. In one of your samples, you discover a flexible, sessile creature. It looks somewhat plant-like, but then you notice a polyp that is producing medusa-like animals.