Which of the following statements about histones is incorrect?
A. They are highly basic because they contain many positively charged amino acid side chains
B. They are extensively modified after their translation
C. In combination with DNA, they are the primary constituents of chromatin
D. They account for approximately one-fifth of the mass of a chromosome
Answer: Option D
This Question Belongs to Biotechnology Engineering >> Basic Principles Of Biotechnology
A. Reverse transcriptase
B. Cytochrome c
C. Bacterial RNA polymerase
D. RNase P
All the following may be methods for the inhibition of microbial growth by antibiotics except
A. Antibiotics disrupt cell wall synthesis
B. Antibiotics interfere with cell membrane function
C. Antibiotics prevent the release of energy from ATP
D. Antibiotics inhibit the synthesis of protein
A feature common to almost all transmembrane proteins is
A. A phosphorylated exterior domain
B. A structure consisting almost exclusively of beta-sheets
C. An amino acid sequence rich in acidic residues
D. An alpha-helical region of about 20 to 25 hydrophobic amino acids
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