The dikaryons of Zygomycoa are known as
A. asci.
B. basidia.
C. conidia.
D. sporangia
E. zygosporangia
Answer: E
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A bacterial cell that contains an outer membrane and periplasmic space stains pink to red on Gram stain. Which one of the following statements explains this discrepancy?
a. The bacteria were subjected to too much alcohol during the decolorization process, causing the organism to absorb the pink-to-red dye. b. The bacteria with an outer membrane and periplasmic space should not be Gram stained because of their cell wall content. c. Something is wrong with the lot of stains and may be expired. The Gram stain rea-gents are most likely expired. d. No discrepancy is present; organisms that contain an outer membrane and periplas-mic space should stain pink because of their cell wall composition.
In order to completely oxidize glucose, it takes two turns of the citric acid cycle, which yields a net of 2 ATP, 6
NADH and 2 FADH2. How many of the 32 total ATP molecules produced in cellular respiration come from the citric acid cycle, including the contribution from the NADH and FADH2?
a. 32 b. 28 c. 24 d. 20 e. 16
Replication of DNA
a. takes place during interphase. b. results in two double helices from one. c. is semiconservative. d. is all of the above.
What is the process in which impulses jump from node to node?
A. Incomplete transfer B. Saltatory conduction C. Repolarization D. Refractory action E. Facilitated transmission