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- Question
Metabolism of dissolved organic material released by phytoplankton allows heterotrophic bacteria to become part of the particulate organic matter that is passed up the food web to be metabolized and released as mineral elements and CO2 at each transfer. This sentence describes the
Options- A. microbial loop
- B. Winogradsky column
- C. Redfield ratio
- D. Gibbs free energy
- Correct Answer
- microbial loop
- 1. Which of the following catalyze liberation of orthophosphate from organic P compounds and inorganic pyrophosphate?
Options- A. Alkaline phosphates
- B. Oxidoreductase
- C. Protease
- D. Hydrogenase Discuss
- 2. Which of the following theory is supported by the genomic sequence of the obligate intracellular parasite Rickettsia prowazekii?
Options- A. Parasitic bacteria have very large genomes
- B. Parasites have a definite genomic sequence similar to viruses
- C. Mitochondria have evolved from endosymbiotic bacteria
- D. All bacteria evolved from viruses Discuss
- 3. Which of the antibiotic is not used as a food preservative?
Options- A. Pimaricin
- B. Nisin
- C. Tylosin
- D. ?-lactam antibiotic Discuss
- 4. Which of the following microorganism produces only L(+) - lactic acid without further racemization?
Options- A. Leuconostoc mesenteroides
- B. Lactobacillus delbrueckii
- C. Rhizopus oryzae
- D. Lactobacillus bulgaricus Discuss
- 5. Algae are classified into 6 groups, technically known as
Options- A. categories
- B. divisions
- C. genera
- D. domains Discuss
- 6. Which of the following is a food infection?
Options- A. Salmonellois
- B. Botulism
- C. Staphylococcal intoxication
- D. None of these Discuss
- 7. The class of immunoglobulin, most abundant in body is
Options- A. IgD
- B. IgE
- C. IgG
- D. IgM Discuss
- 8. The medium required for glutamic acid mainly consist of
Options- A. glucose
- B. molasses
- C. sucrose
- D. lactose Discuss
- 9. Which of the following nucleic acid is present in hepatitis B virus?
Options- A. dsDNA
- B. ssRNA
- C. ssDNA
- D. dsRNA Discuss
- 10. Who discovered transposons (jumping genes)?
Options- A. Abelson
- B. Harvey
- C. McClintock
- D. Griffith Discuss
More questions
Correct Answer: Alkaline phosphates
Correct Answer: Mitochondria have evolved from endosymbiotic bacteria
Correct Answer: ?-lactam antibiotic
Correct Answer: Rhizopus oryzae
Correct Answer: divisions
Correct Answer: Salmonellois
Correct Answer: IgG
Correct Answer: glucose
Correct Answer: dsDNA
Correct Answer: McClintock
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