The surgeon who advocated using disinfectants on hands and in the air prior to surgery was
A. Louis Pasteur.
B. Joseph Lister.
C. Antonie van Leeuwenhoek.
D. Robert Koch.
E. Ignaz Semmelweis.
Answer: B
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Each of the V domains in immunoglobulins has ________ complementarity-determining regions
A) one B) two C) three D) four
What determines the specificity of a receptor protein?
A. the cytoplasmic domain B. the transmembrane domain C. the ligand-binding site D. the extracellular domain
Which of the following adaptations to the plasma membrane allows mammals to hibernate in subzero
temperatures without their plasma membranes freezing?
a. Increase in cholesterol content only. b. Increase in protein content only. c. Increase in the number of double covalent bonds in phospholipids. d. Increase in both cholesterol and protein content. e. Increase in both cholesterol and double covalent bonds in phospholipids.
Where does protein synthesis take place?
A) in the nucleolus B) on smooth endoplasmic reticulum C) on ribosomes D) in the nucleus