Which is true about prions?

A. They cause a degenerative brain condition.
B. They are naked pieces of RNA.
C. They are made of DNA and protein.
D. They are a normal brain protein that has folded differently.
E. They cause a degenerative brain condition AND they are a normal brain protein that has folded differently.


E

Biology & Microbiology

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Describe the function of the root hairs

What will be an ideal response?

Biology & Microbiology

The most inclusive level of organization is exemplified by which of the following?

A. Heart B. Carbon atom C. DNA D. Zebra E. Red blood cell

Biology & Microbiology

For processes such as those in the figure that can take thousands of years, how can we know that succession can occur in this way?

A) via carbon dating B) via chronosequences C) via long-term studies D) via the phytoplankton community

Biology & Microbiology

Oil-degrading bacteria are naturally present in the environment but cannot degrade an oil spill fast enough to avoid ecological damage. How can the actions of these bacteria be sped up?

a. Provide oil for them. b. Provide sugar as a carbon source. c. Provide nitrogen and phosphorus. d. Add water. e. Add NaCl.

Biology & Microbiology