Which of the following requires both ATP and NADPH?
A. electron transport through the thylakoid membrane
B. the light reaction only
C. the Calvin cycle only
D. both the light reaction and Calvin cycle
E. neither the light reaction nor the Calvin cycle
C. the Calvin cycle only
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F+ strains of Escherichia coli
A) do not have an F factor. B) have the F factor as a plasmid. C) have an integrated F factor. D) transfer the F factor to recipient cells at a high frequency.
Which of the following is not a benefit or advantage of using mass spectrophotometry?
A. Proteins can be sequenced by mass spectrophotometry. B. The mass of a protein can be determined and lead to its identification. C. Changes in mass due to binding of cofactors, bound metal ions, and covalent modifications can be measured. D. If protein is enzyme, sequence information includes three-dimensional structure of active site. E. Fragments of the protein may permit unambiguous association with its gene.
Answer the following statements true (T) or false (F)
1. The word meristem is derived from a Greek word meaning to divide. 2. The root zone of maturation is immediately above the root apical meristem (RAM). 3. The root hairs develop in the zone of elongation. 4. The direction in which a plant cell expands depends on the arrangement of cellulose microfibrils in its cell wall.
Mutations that enable cancer cells to grow and divide faster than other normal cells are known as ________ mutations.
A) benign B) gateway C) passenger D) driver