In Figure 16.1, how many mL is the total lung capacity?

A) 1700
B) 5800
C) 2800
D) 1300
D) 1300


Ans: B) 5800

Biology & Microbiology

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. Effective treatment of wastewater/sewage is reflected in a(n)

A. lower BOD. B. higher BOD. C. unchanging BOD. D. increase in sulfur.

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Why does E. coli shut down the trp operon if tryptophan is available in the environment?

a. Synthesizing an amino acid takes energy so it is a waste of energy to make something that is already available. b. Environmental tryptophan is of higher quality than what the E. coli can make itself. c. The trp operon encodes genes that export tryptophan from the cell; if there is already tryptophan in the environment, further export isn't necessary. d. It doesn't shut down the trp operon but only lowers the level of trp operon activity. e. E. coli actually turns the trp operon on when tryptophan is present; tryptophan is an energy source for the cell, and there is no reason to make enzymes to degrade something that is lacking in the environment.

Biology & Microbiology

The most familiar prokaryotes belong to the:a

Fungi. b. Archaea. c. Protista. d. Bacteria. e. Viroids.

Biology & Microbiology

Evaluate and explain the importance of positional information and morphogens in induction

What will be an ideal response?

Biology & Microbiology