Which of the following amino acids is missing from gelatin?
A) lysine
B) tryptophan
C) valine
D) None, gelatin is a complete protein.
B
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Indicate whether the statement is true or false
What interpretations can be made about the maturity of a volcano where most eruptions occur from basal fissures and there are a number of parasitic cones along the volcano's flanks?
A) It is a mature volcano. B) It is in the early stages of growth.
Which scenario predicts the lowest level of warming during the 21st century?
A) RCP4.5 B) RCP2.6 C) RCP8.5 D) RCP6.0
Humans have dramatically altered the rate of nitrogen fixation into forms usable by autotrophs by ________
A) burning of fossil fuels to meet our energy needs B) using antibiotics to reduce the numbers of denitrifying bacteria C) selectively removing leguminous plants D) producing synthetic fertilizers and applying them to crops, lawns, and parks E) increasing the erosion of farmlands through poor agricultural practices