The developmental pathway of each whorl of a developing Arabidopsis flower is determined by (Select all correct choices):
A. the number of meristem cells in each
whorl.
B. the specific combination of genes active in
each whorl.
C. the specific combination of activities in
each whorl.
D. the specific combination of transcription
factors present in each whorl.
E. the specific combination of cell types in
each whorl.
B,C,D
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Provide evidence supporting the statement that an ecosystem is controlled by microbial activities
What will be an ideal response?
Reductive dechlorination is a process in which
A) the number of chlorine atoms present is reduced by oxygenase enzymes. B) chlorinated organics are used as terminal electron acceptors in anaerobic respiration. C) carbon dioxide is the final end product. D) xenobiotics are cometabolized with other reductive reactions.
When the amount of enzyme present is held constant, the rate of a reaction will continue to increase as long as the substrate concentration increases.
Answer the following statement true (T) or false (F)
________ are carrier proteins embedded in the membrane that increase the rate of diffusion of specific molecules across selectively permeable membranes.
Fill in the blank(s) with the appropriate word(s).