Which of the following can best be considered a biological system?

a. a pond
b. the biosphere
c. a single liver cell
d. all of the listed responses are correct


Answer: d. all of the listed responses are correct

Biology & Microbiology

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Because it secretes substances into ducts that connect to the duodenum, the pancreas acts as an ____ gland of the digestive system

Fill in the blank with the appropriate word.

Biology & Microbiology

Which compound has the highest free energy and produces the most ATP when oxidized?

A. acetyl CoA B. glucose C. pyruvate D. carbon E. both pyruvate and carbon

Biology & Microbiology

Which genus of bacteria causes more diseases in humans than any other?

What will be an ideal response?

Biology & Microbiology

As Schwann cells wrap around axons, their cytoplasm is pushed to the periphery and is called the __________

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology