Most newly emerging diseases, no matter how severe their effects on a population, human or otherwise, have which of the following in common?

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#Question id: 9252

#Unit 9. Diversity of Life Forms

Which of these environmental factor(s) is/are the key determining factor(s) that control(s) the biotic structure of aquatic biomes?

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#Question id: 16129

#Unit 13. Methods in Biology

5 You are studying regulation of the yeast enzyme glutamine synthetase (GS), which is encoded by the GLN1 gene. You have isolated two mutants, designated gln2– and gln3–, that give decreased GS activity. Mating of either gln2– or gln3– haploids to wild type produces heterozygous diploids that show normal amounts of GS expression. When you cross either a gln2– or gln3– haploid to a gln1– strain the resulting diploids show normal expression of GS.

Describe the cis-acting elements in the GLN1 promoter that are evident from these experiments, giving both their position and as much of their function as you can deduce.

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#Question id: 457

#Unit 1. Molecules and their Interaction Relevant to Biology

Which are membrane associated pathways?

A) electron transport chain in eukaryotes

B) citric acid cycle in bacteria

C) photosynthesis

D) glycolysis

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#Question id: 4457

#Unit 3. Fundamental Processes

In the holoenzyme, which sigma region acts as a molecular mimic of DNA?

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#Question id: 23107

#Unit 2. Cellular Organization

Choose the correct statement

a.The 30-nm fiber is further folded, results in 10000-fold compaction in euchromatin in interphase chromatin and in mitotic chromosomes to achieve an overall 10,00- fold compaction in euchromatin.

b.This 30-nm fiber is further folded, results in 1000-fold compaction in euchromatin in interphase chromatin and in mitotic chromosomes to achieve an overall 10,000- fold compaction in euchromatin.

c.Heterochromatin generally maintains 10,000-fold compaction in both interphase and mitosis after 30 nm.

d.Heterochromatin generally maintains 10,00-fold compaction in interphase and 10,000 folds in  mitosis after 30 nm.