Who provided X-ray diffraction photographs of purified DNA fibers that suggested a helical structure with a consistent diameter of about 2 nm and a complete helical turn every 3.4 nm?
A. Hershey and Chase
B. Chargaff
C. Franklin
D. Watson and Crick
C. Franklin
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Which molecule is responsible for carrying the acetyl group from pyruvate into the citric acid cycle?
a. NADH b. FADH2 c. ATP d. CoA e. oxaloacetate
Which of the following systems is the only one to
have direct interactions with the other four? a. digestive b. urinary c. circulatory d. respiratory e. endocrine
Which of the following is an example of Scala Naturae?
a. Darwin's ladder-like understand of nature from the most complex to simplest b. Darwin's ladder-like understand of nature from simplest to the most complex c. Aristotle's ladder-like understand of nature from the most complex to simplest d. Aristotle's ladder-like understand of nature from simplest to the most complex
If you were vaccinated against the mumps virus and later exposed to it, you would still be infected, but it would not be as bad as if you had never been vaccinated.
Answer the following statement true (T) or false (F)