Which of the following best describes the mechanism by which chromatin-remodeling complexes "loosen" the DNA wrapped around the core histones?
(a) They use energy derived from ATP hydrolysis to change the relative position of the DNA and the core histone octamer.
(b) They chemically modify the DNA, changing the affinity between the histone octamer and the DNA.
(c) They remove histone H1 from the linker DNA adjacent to the core histone octamer.
(d) They chemically modify core histones to alter the affinity between the histone octamer and the DNA.
(a)
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Wanting to eat a piece of chocolate cake but not wanting to grain weight is an example of an ______________ type of conflict?
A) an approach-approach B) and avoidance-avoidance C) and approach-avoidance D) acceptance-approach
Members of which fungal phylum form associations with approximately 90% of land plants by forming mycorrhizae
with them?
a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota
Binding of _____ to _____ in DNA can increase the rate of transcription of specific genes
a. activators; promoters b. enhancers; promoters c. repressors; operators d. repressors; promoters e. enhancers; operators
Which of the following types of protein would be most easily removed from a membrane by changing pH or ionic strength?
A) GPI-anchored protein B) fatty acid-anchored protein C) integral protein D) peripheral protein E) glycosylated integral protein