Which of the following statements is false?
A) There are more than 60 different kinds of amino acids present in cells.
B) The R group of amino acids differs from one amino acid to another.
C) Only around 20 amino acids are used in protein synthesis.
D) Equal amounts of D- and L-amino acids are found in cells.
E) An amino acid has an N-terminus, a C-terminus, and an R group.
Answer: D
You might also like to view...
The structures labeled "B" in the accompanying figure ____
a. prevent movement of materials between cells b. are found in tissues subjected to stretching c. allow the free passage of materials between cells d. are found mostly in heart muscle e. are found in most tissues except in the stomach
If K (carrying capacity) for a population is 1,200, and
r = 0.1, which of the following populations will show the greatest increase over the course of one year assuming exponential growth? a. N = 100 b. N = 200 c. N = 300 d. N = 700 e. N = 900
Which of these pairings is not correct?
a. diapsids?lizards b. diapsids?turtles c. synapsids?dinosaurs d. synapsids?mammals e. synapsid-birds
Which of the following implies movement with regard for direction?
A. Taxis only B. Kinesis only C. Migration only D. Taxis and migration only E. Taxis, migration, and kinesis