Which of the following best describes a plasmid
A. a small piece of DNA outside the chromosome
B. Segments of chromosome that code for a functional product
C. A segment of chromosome which is used in conjugation
D. Small piece of DNA found in mitochondria
E. DNA found only in eukaryotic cells
Ans: A. a small piece of DNA outside the chromosome
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Hershey and Chase tagged the DNA of viruses with radioactive phosphorus, and their protein coats with radioactive sulfur. When the viruses were allowed to infect bacteria, what did the viruses transfer to the bacteria?
A. radioactive phosphorus B. neither radioactive phosphorus nor sulfur C. radioactive phosphorus and sulfur D. radioactive sulfur
Which biome is characterized by an abundance of trees that lose all of their leaves at a specific time of
year? a. taiga only b. tropical rain forest only c. temperate rain forest only d. temperate deciduous forest only e. both the temperate and tropical rain forests
Which of the following is an organic compound?
A) adenine B) carbon dioxide C) molecular oxygen D) sodium chloride E) water
isolating the cell from the external environment and in maintaining homeostasis within the cell
What will be an ideal response?