23. All of the following are routinely used to preserve food except: A. high con

Question

23. All of the following are routinely used to preserve food except: A. high concentrations of sugar or salt. B. drying. C. formaldehyde D. organic acids. E. all of the above may be used to preserve food. 24. The TCA cycle produces all of the following except: A, ATP (GTP). B NADH FADH2. B. CO2. it produces all of the above. 25. During anaerobic respiration ATPs are made by vA. Substrate level phosphorylation vB. Oxidative phopshorylation C. Cyclic photophosphorylation D. Noncyclic photophosphorylation A and B 26. You were diagnosed with a bacterial agent and the doctor gave you an antibiotic that targets a prokaryotic ribosomal subunit because this organism does not have a cell wall. What organism are you most likely to be infected with? A. Candida albicans B. Mycobacterium tuberculosis C. Staphylococcus aureus D. Mycoplasma pneumoniae E. Entamoeba histolyticum 27. For each glucose made in the dark reactions of photosynthesis the number of ATP:NADPH ach C02 fres Reauves required is: A. 12:12 B 18:12 C. 12:18 D. 18:18 E. 6:6 ATP NADPW atio 28. Which is false concerning the main sources of biohazards associated with health care workers cquiring an infection from a patient or in the laboratory? A. processing patient specimens B. handling growing cultures C. the infected patient D. collecting specimens from the patient E. all of the above would be sources

Explanation / Answer

23. C. formaldehyde

Formaldehyde is not a legal food preservative. It is although used in storing cosmetics.

24. E. It produces all the above.

TCA cu=ycle produces ATP (GTP), NADH, FADH2 and CO2.

25. E. A and B

Anaerobic respiration is similar to aerobic respiration except in anaerobic respiration, oxygen is not the final electron acceptor in ETC. So ATP is formed via both substrate level phosphorylation (glycolysis) and oxidative phosphorylation.

26. D. Mycoplasma pneumoniae

Mycoplasma pneumoniae lacks a cell wall, so the doctor prescribed a drug that targets ribosomal units.

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