Extracelular Suid Pore Channel protein blayer with hydrophobic core Cytosol 16.
ID: 194072 • Letter: E
Question
Extracelular Suid Pore Channel protein blayer with hydrophobic core Cytosol 16. The blue arrow represents part of the transmembrane protein that is on the outside of the bilayer. Which of the following amino acids would you expect to find here? a. Histidine b. Valine C. Alanine d. Leucine e. Isoleucine 17. Channel proteins, such as the one labeled by the blue arrow, would likely transport materials like a. Glucose b. Sodium ions c. Oxygen d. Only A and B e. Only A and C Section 6: Free Standing Questions 18. Which of the following NTP is a part of the cellular respiration cycle and is used for energy? a. GTP b. TTP C. CTP d. UTP e. None of the above 19. If a sequence of DNA has 40% of its sequence adenine, then what percentage of the sequence will be uracil? a, b. c. d. e. 0% 10% 20% 40% Cannot be determined by this information PIC.COLLAGEExplanation / Answer
16. Option a is the correct answer. The outer portion of integeral proteins contain hydrophilic (polar) amino acids and interior portion contain hydrophobic (non-polar) amino acids as outer portion of lipid bilayer is hydrophilic and interior portion is hydrophobic. Here all amino acids except histidine are hydrophobic and thus the correct answer is option a.
17. Option d is the correct answer. Protein channels play a role as a carrier in facilitated diffusion. Large, polar and charge molecules like glucose and sodium ions are transported by facilitated diffusion while small molecules like oxygen freely diffuse across cell membrane.
18. Option a is the correct answer. GTP (Guanosine triphosphates) are used in respiration cycle. 2 molecule of GTP are obtained from Kreb's cycle which are further utilized in respiratory cycle.
19. Option a is the correct answer. DNA does not contain uacil. It contain thymine instead of uracil in RNA. Thus, the percentage of uracil will be zero.
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