How does the release of histamine by white blood cells lead to allergic reactions?
How does the release of histamine by white blood cells lead to allergic reactions?
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Questions and Answers For
IB Biology
662 Questions
1 Answer In what ways do antibodies aid in the destruction of pathogens?
In what ways do antibodies aid in the destruction of pathogens?
1 Answer What is the function of plasma cells in the immune response?
What is the function of plasma cells in the immune response?
1 Answer How does the process of clonal selection result in the formation of plasma cells and memory cells from activated B cells?
How does the process of clonal selection result in the formation of plasma cells and memory cells from activated B cells?
1 Answer What is the role of T lymphocytes in the activation of B lymphocytes in mammals?
What is the role of T lymphocytes in the activation of B lymphocytes in mammals?
1 Answer Why are some pathogens species-specific, and how can others cross species barriers?
Why are some pathogens species-specific, and how can others cross species barriers?
1 Answer How do unique molecules on the surface of cells help in distinguishing between self and non-self in organisms?
How do unique molecules on the surface of cells help in distinguishing between self and non-self in organisms?
1 Answer How can patterns of chromosome number in certain genera suggest speciation due to polyploidy?
How can patterns of chromosome number in certain genera suggest speciation due to polyploidy?
1 Answer How do geographically isolated populations show differences in allele frequencies, and why are these differences significant?
How do geographically isolated populations show differences in allele frequencies, and why are these differences significant?
1 Answer How does polyploidy contribute to speciation in the genus Allium?
How does polyploidy contribute to speciation in the genus Allium?
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drifting movement in fishes during migration
Drifting movement is a significant aspect of fish migration, particularly
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classification of fishes based on migration in dams in india
Fish migration is a critical aspect of aquatic ecosystems, significantly
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Do fish migrate in the winter?
Fish exhibit diverse migratory behaviors during winter, influenced by species-specific
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Topoisomerase: – A. Separates the DNA strands at the origin – B. Keeps the single-stranded DNA regions from coming back together – C. Re-coils the DNA into a helix after replication is complete – D. Breaks DNA backbone to remove tension produced by the helicase – E. Breaks hydrogen bonds between DNA and the RNA primers
D. Topoisomerase breaks the DNA backbone to relieve supercoiling tension
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What end overhangs?
The 3' end of the telomere strand typically has a
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What kind of cells need cell replication of their telomeres?
Actively dividing cells, such as stem cells, germ cells, and
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What percent of all human cancers have high levels of telomerase?
Around 85–90% of human cancers have high telomerase activity. This
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