You may have heard the advice to “eat low on the food chain.” Explain how choosing a soybean-protein “burger” rather than a beef burger for lunch is energy efficient with respect to energy flow and utilization in trophic levels.

What will be an ideal response?


The soy-burger has more available energy than in a beef burger prepared from an animal higher on the food chain if one considers the total amount of sunlight energy initially captured by plants. Each trophic level results in a decreased amount of available energy.

Biology & Microbiology

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The first identification test performed on a clinical isolate of gram-positive, catalase-positive cocci would likely be the:

a. penicillin test. b. Gram stain. c. oxidase test. d. coagulase test.

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People with Klinefelter syndrome have ________ chromosome constitution.

A) XXY B) XY C) YO D) XXX

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What harvests energy from sunlight to rearrange molecules into sugar?

A) Chloroplasts B) Mitochondria C) Nucleus D) Lysosome

Biology & Microbiology

What other enzyme is the Cas9 enzyme most similar to?

A) DNA polymerase B) DNA ligase C) a restriction enzyme D) reverse transcriptase

Biology & Microbiology