At some time during their life cycles, bryophytes make _____
A) microphylls
B) true roots
C) true leaves
D) sporangia
D
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This initiator tRNA of the bacterium Escherichia is a modified form of the initiator tRNA used by the yeast Saccharomyces.
Answer the following statement true (T) or false (F)
In the human body, which of the following structures contains cells that are part of the endocrine system? Select all correct choices
A. the pancreas B. the stomach C. the intestines D. the brain E. the ovaries
On hot, dry days, what problem arises for C3
plants?
a. oxygen binds to rubisco’s active sites preventing carbon fixation b. with stomata open, they lose excessive water c. too much glucose is produced d. carbon dioxide fixes to RuBP instead of PGA e. the electrons from water bind to ADP instead of NADPH
Which of the following operations will NOT increase the industrial lysine production?
A) using a bacterial strain in which aspartokinase does not bind to S-aminoethylcysteine (AEC), an aspartokinase inhibitor. B) increasing the concentration of S-aminoethylcysteine (AEC), an aspartokinase inhibitor, in the fermentor. C) fermenting with a bacterial strain that contains mutations in the allosteric site of aspartokinase. D) increasing the precursor (aspartate) concentration. E) growing the lysine producing bacterium in a chemostat with constant removal of lysine