BIO 340 Exam 1
Questions and
Complete Answers
Graded A+
Denning [Date] [Course title]
, In Griffith's experiments, what made the harmless R cells grow capsules when exposed to heat-killed S
cells?
- Protein
- DNA
- Lipids
- Polysaccharides - Correct Ans: - DNA
In the Hershey-Chase experiment radioactive Sulfur was used to:
- Be incorporated into the phage DNA because of its numerous sulfur atoms
- Be incorporated into the phage protein coat because of its numerous phosphorous atoms
- Be incorporated into the phage DNA because of its numerous phosphorus atoms
- Be incorporated into the phage protein coat because some amino acids contain sulfur - Correct Ans: -
Be incorporated into the phage protein coat because some amino acids contain sulfur
The experiments by Hershey and Chase helped confirm that DNA was the hereditary material on the
basis of the finding that:
- Radioactive phage were found in the pellet
b. Radioactive cells were found in the supernatant
c. Radioactive sulfur was found inside the cell
d. Radioactive phosphorus was found inside the cell - Correct Ans: d. Radioactive phosphorus was found
inside the cell
If DNA of a particular species was analyzed and it was found that it contains 27 percent of adenine (A),
what would be the percentage of cytosine (C)?
- 27 percent
- 30 percent
- 23 percent
- 54 percent - Correct Ans: - 23 percent
Questions and
Complete Answers
Graded A+
Denning [Date] [Course title]
, In Griffith's experiments, what made the harmless R cells grow capsules when exposed to heat-killed S
cells?
- Protein
- DNA
- Lipids
- Polysaccharides - Correct Ans: - DNA
In the Hershey-Chase experiment radioactive Sulfur was used to:
- Be incorporated into the phage DNA because of its numerous sulfur atoms
- Be incorporated into the phage protein coat because of its numerous phosphorous atoms
- Be incorporated into the phage DNA because of its numerous phosphorus atoms
- Be incorporated into the phage protein coat because some amino acids contain sulfur - Correct Ans: -
Be incorporated into the phage protein coat because some amino acids contain sulfur
The experiments by Hershey and Chase helped confirm that DNA was the hereditary material on the
basis of the finding that:
- Radioactive phage were found in the pellet
b. Radioactive cells were found in the supernatant
c. Radioactive sulfur was found inside the cell
d. Radioactive phosphorus was found inside the cell - Correct Ans: d. Radioactive phosphorus was found
inside the cell
If DNA of a particular species was analyzed and it was found that it contains 27 percent of adenine (A),
what would be the percentage of cytosine (C)?
- 27 percent
- 30 percent
- 23 percent
- 54 percent - Correct Ans: - 23 percent
