Without the work of Rosalind Franklin, Watson and Crick would not have known
A. which nucleotides could pair together.
B. how many strands of DNA made up the molecule.
C. the width of the molecule.
D. the shape of the molecule.
E. All of the answers are correct.
Answer: E
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One way that antibiotic-resistant strains of bacteria arise is that patients do not follow the instructions for taking the drug. In a typical scenario, a drug may be prescribed for a week, but the patient may stop taking it after 2 to 3 days if they start to feel better. Then when the infection flares up again, they take the rest of their dose. Why would this scenario lead to drug resistance?
A. The first round of treatment gives the bacteria a chance to learn how to metabolize the drug. B. A patient begins to develop resistance to the drug. C. The body clears the drug faster, once it is exposed a second time. D. The first round of treatment does not kill the most resistant bacteria, which then increase in number. E. The first round of treatment suppresses the immune system, making the patient more susceptible to other infections.
Thylakoids are structures associated with the ____________ of chloroplasts
a. pigments b. stroma c. grana d. cristae
What process is responsible for the flow of water through a plant, from the soil to the leaves?
A) translocation B) transpiration C) respiration D) internal pumping
Neutral fats contain
a) glycerol and starch b) glucose and fatty acids c) glycerol and fatty acids d) glycogen and fatty acids