Which of the following is not one of the 20 standard amino acids which are the building blocks of proteins, but is in fact sometimes found in proteins?
A) citrulline
B) ornithine
C) selenocysteine
D) xanadine
C
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Raindrops are initially what kind of shape?
A) teardrop B) oblong C) spherical D) cylindrical
The interaction of physical and chemical processes that change rocks from one type to another type is known as ____.
A. metamorphism B. the rock cycle C. petrography D. consolidation E. hydrogeology
For the reaction 2C ? A + B, 0.01 mol of A is formed during the first 15 seconds of the reaction. Assuming that the rate of reaction remains constant for two minutes, which of the following statements is true?
A) After 2 minutes 0.08 moles of B were produced. B) After 2 minutes 0.08 moles of C were consumed. C) both a and b D) neither a nor b
Which of the following factors do NOT affect the amount of ground shaking during an earthquake?
A. Distance to the epicenter. B. Focal depth of the earthquake. C. Velocity of different seismic waves. D. Type of material seismic waves travel through. E. Amount of strain energy released during an earthquake.