The major reductive amination pathway for incorporation of nitrogen into amino acids initially involves the production of ________ from alpha-ketoglutarate.
A. tryptophan
B. cysteine
C. glutamate
D. arginine
Answer: C
You might also like to view...
Since 1980, the proportion of adults in the United States who are obese has ____
a. decreased by half b. doubled c. tripled d. decreased dramatically e. stayed the same
Which of the following is true of a species that has a chromosome number of 2n = 16?
A) The species is diploid with 32 chromosomes per cell. B) The species has 16 sets of chromosomes per cell. C) Each diploid cell has eight homologous pairs. D) A gamete from this species has four chromosomes.
Which of the following characteristics of water is most responsible for the sinking of the Titanic?
A. The temperature of liquid water rises and falls slowly. B. Water is liquid at room temperature. C. Frozen water is less dense than liquid water. D. Water molecules are cohesive. E. Water has a high heat of vaporization.
Fred Griffith studied two strains of Streptococcus pneumonia, one that causes a lethal infection when injected into mice, and a second that is harmless
He observed that pathogenic bacteria that have been killed by heating can no longer cause an infection. But when these heat-killed bacteria are mixed with live, harmless bacteria, this mixture is capable of infecting and killing a mouse. What did Griffith conclude from this experiment? (a) The infectious strain cannot killedby heating. (b) The heat-killed pathogenic bacteria "transformed" the harmless strain into a lethal one. (c) The harmless strain somehow revived the heat-killed pathogenic bacteria. (d) The mice had lost their immunity to infection with S. pneumoniae.