Who was first scientist to identify and characterize DNA?
a. Rosalind Franklin
b. Linus Pauling
c. Francis Crick
d. Friedrich Miescher
Answer: d. Friedrich Miescher
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When experimenting with Streptococcus pneumoniae in the 1920s, Griffith concluded that some substance from the dead S strain bacteria passed to the R strain bacteria, imparting virulence and the ability to form a capsule. Avery and others continued the search for the substance that "transformed" the R strain into the S strain.Hypothesis I:Genetic material or "transforming substance" is protein.Hypothesis II:Genetic material or "transforming substance" is RNA.Hypothesis III:Genetic material or "transforming substance" is DNA.An experiment was performed that demonstrated that the addition of a protein-degrading enzyme did not prevent transformation. This finding
A. supports Hypothesis I. B. supports Hypothesis II. C. supports Hypothesis III. D. rejects Hypothesis I only. E. rejects Hypothesis II only. F. rejects Hypothesis III only. G. does not support any of these hypotheses.
Which of the following macromolecules is insoluble in water?
A) lipids B) sugars C) amino acids D) disaccharides E) nucleic acids
A male fruit fly carries the allele for yellow body color on his X chromosome. How would this male's genotype for this body color gene be described?
A. heterozygous B. homogametic C. holandric D. hemizygous E. homozygous
The release of acetylcholine into the neuromuscular junction is shortly followed by the release of ________ ions from the sarcoplasmic reticulum
Fill in the blank(s) with correct word