Which of the following processess is carried out more efficiently by a C4 plant than by a C3 plant?
A. Light absorption
B. Chemiosomtic coupling
C. Photolysis
D. Fixation of CO2
E. transport of sugars
Ans: D. Fixation of CO2
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Which of the following is a critical region of a tRNA molecule? (choose all that apply)
A. amino acid attachment site B. anticodon loop C. stop codon D. aminoacyl site E. ribosome binding site
In which year does it appear that the climate was most conducive to growth?
a. 2009 b. 2010 c. 2011 d. 2012
Excitatory neurotransmitters ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is a difference between meiosis I and mitosis?
A) Two daughter cells are formed B) Daughter cells are diploid at the end of meiosis C) Daughter cells are haploid at the end of meiosis D) Chromosomes move to opposite poles of the cell