Which of the following statements are true in case of fluid-mosaic model for cell membrances
P. Between 5 - 8 nm thick and appear trilaminar when viewed in cross-section under electron microscope
Q. Less than 1 nm thick and consist of a layer of protein sandwitched between two layers of phospholipids
R. In the lipid bilayer, proteins are embedded at irregular intervals and held by hydrophilic interactions between lipids and hydrophilic domains of the proteins
S. The protein domains exposed on one side of the lipid bilayer are different from those exposed on the other side
A. P, Q
B. P, S
C. Q, S
D. P, R
Answer: Option B
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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