43. Which is TRUE of the sugar code? a· Sugars called lectins bind to specific p

Question

43. Which is TRUE of the sugar code? a· Sugars called lectins bind to specific proteins, mediated by noncovalent interactions. b. Antivirals such as Tamiflu prevent "reading" C. The sugar code is contained in proteoglycan aggregates. of the sugar code that allows target cell infection Encodes information important in cell to-cell interactions e. An example is blood type, which depends on antibodies in the cell membrane of red blood cels Blood has a pH of approximately 7.4. What is the concentration of H' ions in blood? a 2.51 x 10'M b. 66M e. 2.51 x 10 M d. 3.98 x 10 M 45. Which of the following is NOT found in bacterial cell membranes? a. integral membrane proteins b. cholesterol c. sphingolipids 46. Which of the following statements regarding cloning plasmids is correct? a. Circular plasmids do not require an origin of replication. b. A plasmid can be added to bacterial cells through a process known as mutagenesis. c. Cloning plasmids must contain a gene that encodes a glycoconjugate d. A single bacterial cell may contain up to several hundred copies of a particular plasmid 47. Peripheral membrane proteins are characterized by each of the following statements EXCEPT a. May easily undergo lateral motion through the lipid bilayer b. May have functional units on both sides of the membrane. c. Dissociate from the membrane by treatment with salt solutions. d. May be anchored to the lipid portion of the membrane through noncovalent linkages 48. The difference between the 4G' values for the catalyzed and uncatalyzed reactions is the s be 49. Recombinant DNA: a. involves the cutting of DNA in mirror repeat sequences b. is a combination of DNA from two or more sources. V c is created through a process known as transplantation d. is also known as a vector. 50. A protein with four repeating structural units a. may have D, symmetry b. may have Ca symmetry c is known as a trimer d. may be stabilized by disulfide bonds between methionine residues

Explanation / Answer

I'm supposed to answer one question at a time. I've answered Q44. pH = -log[H+]

[H+]= 10^(-pH)

=10^(-7.4)

=3.98×10-8 M

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