One simple thing that you can do to help safeguard the environment is to eat a diet consisting only of
A) producers.
B) primary consumers.
C) secondary consumers.
D) a mix of producers and consumers.
Answer: A
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Eustachian tube connects the middle ear and which of the following?
Some animals can become infected with multiple influenza virus strains usually associated with other animals. Which statement below describes the result of these infections?
A. The viral genomes within the host cells can become recombined. B. A new novel strain of flu may be produced, for which the human population has no immunity. C. Major genetic variations in the flu viruses can be reproduced. D. All of the choices are correct.
A researcher is working to generate a new cancer drug. Thus far, he has identified a compound that can reduce the size of tumors in the lung. However, in order for the drug to work, the lung tumor has to be small. In addition, the tumor cannot have metastasized (spread to other areas of the body). Furthermore, he knows that the drug acts to prohibit the signaling from one tumor cell to another tumor cell. Given the above information, this new drug prohibits:
A. paracrine signaling between tumor cells. B. autocrine signaling between tumor cells. C. synaptic signaling between tumor cells. D. endocrine signaling between tumor cells.
One gene therapy that does not rely on gene editing is RNA interference. This therapy uses ________ to interfere with expression of proteins at the translational level
A) mtRNA B) miRNA C) mRNA D) tRNA