Water is required to drive which of the following reactions?
A) The light reactions only
B) The Calvin cycle only
C) Both the light reactions and the Calvin cycle
D) Neither the light reactions nor the Calvin cycle
C
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A researcher knows that bacteria are much more prevalent in the seawater at the ocean's surface, compared to thaumarchaeotes. How does the ratio of bacteria to thaumarchaeotes compare at lower depths (5000 meters under the ocean's surface)?
A. Bacteria are still much more prevalent. B. Thaumarchaeotes are much more prevalent. C. There are roughly equal numbers of bacteria and thaumarchaeotes. D. Neither bacteria nor thaumarchaeotes can survive at that ocean depth.
After a moss spore germinates it forms a prothallus
____________________ Indicate whether the statement is true or false.
A bacterial polygenic transcription unit ________
A) is void of start (AUG) and termination (UAA, UGA, UAG) triplets B) contains information for more than one protein product C) is capped at the 5? end and carries a poly-A tail at the 3? end D) contains information for one protein product E) None of the answers listed is correct.
The secretory systems of Type III and Type IV pathogenic bacteria differ in their mode of attacking cells in what way?
A. Type III systems use modified pili as transfer tubes whereas Type IV systems use flagella modified as "syringes" to inject materials into cells they are infecting. B. Type III systems bind to the cellular membrane by slimy mucilage and toxins diffuse across the membrane, whereas Type IV systems infect cells using pili as transfer tubes. C. Type III systems infect cells using pili as transfer tubes whereas Type IV systems bind to the cellular membrane by slimy mucilage and toxins diffuse across the membrane. D. Both systems attach to cells in the same way but they differ merely in the chemicals that they inject into the host cell. E. Type III systems use flagella modified as "syringes" to inject materials into cells they are infecting whereas Type IV systems use modified pili as transfer tubes.