Identify the closed system in the following list

a. a human
b. a gas-powered automobile
c. a single-celled organism
d. a propane furnace
e. the Earth


E

Biology & Microbiology

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Which mutations can interfere with the proper insertion of a protein in the plasma membrane?

A. A polar amino acid to a non-polar amino acid within a transmembrane domain B. A non-polar amino acid to a polar amino acid within a transmembrane domain C. A polar amino acid to a non-polar amino acid within a cytoplasmic domain D. A non-polar amino acid to a polar amino acid within a cytoplasmic domain

Biology & Microbiology

Answer the following questions true (T) or false (F)

1. The amount of energy required for a reaction to occur is its activation energy. 2. Accumulation of a metabolic pathway product may result in decreased activity of the pathway enzymes. 3. As the concentration of substrate increases, the activity of the enzyme decreases.

Biology & Microbiology

Thermoregulation in ectotherms can be accomplished by four of the following. Which action will not result in

thermoregulation? a. migrating b. basking c. burrowing d. adapting to seasonal weather variations e. increasing internal metabolism

Biology & Microbiology

erection is

What will be an ideal response?

Biology & Microbiology