What is the purpose of isolating pure cultures?
What will be an ideal response?
Ans: Pure cultures are suitable for the study of their cultural, morphological, and biochemical properties.
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Which of the following levels of ecological organization is arranged in the correct sequence from most to least inclusive?
A) community, ecosystem, organism, population B) ecosystem, community, population, organism C) population, ecosystem, organism, community D) organism, population, community, ecosystem E) organism, community, population, ecosystem
Which of the following represents the correct order of evolution of requirements for complex multicellularity in animals?
A. adhesion, cell signaling, gap junctions, bulk transport B. adhesion, gap junctions, cell signaling, bulk transport C. gap junctions, cell signaling, adhesion, bulk transport D. bulk transport, adhesion, gap junctions, cell signaling
Which organism may be implicated in arteriosclerosis?
A. Escherichia coli B. Pseudomonas aeruginosa C. Staphylococcus aureus D. Chlamydia pneumoniae
The directionality of nuclear protein import is determined by
a. a Ran/GTP gradient b. importin c. an ion gradient d. the nuclear lamina