The central nervous system is protected by
A. muscle.
B. bone.
C. fibrous cartilage.
D. hyaline cartilage.
E. elastic cartilage.
Answer: B
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What will be an ideal response?
In cancer cells, how are promoter regions silenced?
a. Histone acetylation makes DNA inaccessible. b. Repressors bind to the promoter region making it inaccessible to RNA polymerase. c. Methylation of cytosine DNA residues in CpG islands silences promoter regions. d. Promoters are excised by exonuclease.
In what way does prokaryotic fission resemble eukaryotic mitosis?
A. Mechanism of chromosome movement B. Production of genetically identical descendant cells C. Chromosome attachment D. Production of a cytoskeletal framework for separating chromosomes E. Horizontal gene transfers
There are a few places in the United States that use ozone or peroxide for final disinfection of water.
Answer the following statement true (T) or false (F)