A. Formaldehyde B. Glutaraldehyde C. Triclosan D. Merucury E. 5% hypochlorite Ca

Question

A. Formaldehyde

B. Glutaraldehyde

C. Triclosan

D. Merucury

E. 5% hypochlorite

Can Someone Help me Answer These Questions and question 45? and Could you guys check if the answers I chose are correct?? If not correct, please correct me with right answers.

Influenza virus infection? changes 77. Which of the following is false concerning A. Influenza A virus undergoes replication errors underge minor changes(antigenic drift) in H & N spikes due to whs can be identified by a high fever with sudden onset, headache and extreme fatigue, whereas flu is slow onset cough & runny nose most often with diarrhea C. Influenza A virus undergoes major changes (antigenic shift) in H and N hen different viruses (e.g., human, avian, pig) infect the same host cell and recombine D. 70S inhibiting antibiotics (e.g., chloramphenicol, tetracycline, aminoglycosides, macrolides) would not be effective against the influenza viruses. E. Peptidoglycan inhibiting antibiotics (e.g. penicillins, cephalosporins, vancomycin, and the carbapenems) would not be effective against the influenza viruses. 78. Which of the following is the target (mode of action) of aminoglycosides and tetracyclines? A. Peptidoglycan synthesis. B. 30S ribosomal subunit D. RNA or DNA synthesis. C. 50S ribosomal subunit. E. Membrane synthesis or function 79. Fluoroquinolones, like Ciprofloxacin and Moxifloxacin, inhibit: A. protein synthesis. B. membrane function. C. DNA gyrase. D. enzyme function as competitive inhibitors. E. RNA polymerase and transcription. 80. Which of the following describes the oxygen requirement of Clostridium and Bacteroides? A. Obligate aerobe B. Microaerophile C Facultative anaerobe D. Obligate anaerobes E. None of the above 81. All of the following are modes of action of antiviral drugs in humans except: A. inhibition ofnucleic acid synthesis. B. inhibition of entry. C. inhibition of uncoating. D. inhibition of assembly and release. E. all of the above are modes 82. Which of the following is generally false concerning enzymes? A. they are proteins. B. they have turnover numbers (Kcat) that can be in the thousands and more. C. they form a complex with the substrate. D. multiple copies of each enzyme are needed as they are used up in catalysis E. all of the above are true

Explanation / Answer

77. B is incorrect. A cold typically has a slow onset, with symptoms appearing over several days, while the flu causes sudden illness.

78. Answer is B. Inhibition of protein synthesis. Once inside the bacterial cell, aminoglycosides bind to the 30s ribosomal sub-unit and cause a misreading of the genetic code. This subsequently leads to the interruption of normal bacterial protein synthesis.

79. Answer is C. DNA gyrase is a topoisomerase II type enzyme that unwinds the DNA by introducing negative supercoils and can also help relax positive supercoils. Quinolones and fluoroquinolones inhibit this enzyme by binding to the A-subunit of the enzyme due to which the bacteria is unable to replicate or even synthesize proteins.

80. Answer is D. clostridium and Bacteroides are obligate anaerobes.

81. Answer is E

82. Answer is D. Enzymes aren't changed or used up in the reactions they catalyze, so they can be used to speed up the same reaction over and over again.

11. Answer is C. A facultative anaerobe is an organism that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation or anaerobic respiration if oxygen is absent.

12. answer is C.  Water is oxidized in photosynthesis, which means it loses electrons, and carbon dioxide is reduced, meaning it gains electrons.

13. Answer is E

14. Answer is E. They target the cell membrane.

15. Answer is E. Many prokaryotes, Bacteria as well as Archaea, obtain their energy from the oxidation of reduced inorganic compounds such as hydrogen, ammonia, nitrite, sulfide, elemental sulfur, hydrogen and Fe(II) ions. These organisms can derive all their cellular carbon from carbon dioxide, and they are thus able to grow without any organic compounds and without light. Such microorganisms are called chemolithotrophs or chemoautotrophs. Chemolithotrophs are able to fix carbon dioxide (CO2) through the Calvin cycle, a metabolic pathway in which carbon enters as CO2 and leaves as glucose.

16. Answer is E. Per glucose, you get 2 net ATPs from glycolysis. A total of 10 NADH's is made (in glucolysis and the Krebs cycle) per glucose, and 2 FADH2's. We generally say that you get 3 ATPs per NADH and 2 per FADH2, so that these carriers produce a total of 30+4 = 34 ATPs, and the Krebs cycle itself produces 2 GTPs, which are equivalent to 2 more ATPs, for a total of 38.

45.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.