Which is the most efficient complement fixing class of antibody? IgE IgA IgM IgG

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Question
Which is the most efficient complement fixing class of antibody?
Options
A. IgE
B. IgA
C. IgM
D. IgG

Correct Answer

IgM

More questions

1. Most spoilage bacteria grow at
Options
A. acidic pH
B. alkaline pH
C. neutral pH
D. any of the pH

Discuss

Correct Answer: neutral pH

2. Which of the following repairs nicked DNA by forming a phosphodiester bond between adjacent nucleotides?
Options
A. Helicase
B. DNA gyrase
C. Topoisomerases
D. DNA ligase

Discuss

Correct Answer: DNA ligase

3. Pseudomonas syncyanea produces a
Options
A. bluish gray to brownish color in milk in its pure form
B. brownish color to bluish gray in milk in its pure form
C. gray to brownish color in milk
D. yellow color in milk

Discuss

Correct Answer: bluish gray to brownish color in milk in its pure form

4. The test (s) based on the principle of toxin neutralization is/are
Options
A. Nagler's reaction
B. Schick test
C. both (a) and (b)
D. none of these

Discuss

Correct Answer: both (a) and (b)

5. Bacillus thuringiensis is useful as a bacterial
Options
A. source of antibiotics
B. producer of vitamins
C. herbicide
D. pesticide

Discuss

Correct Answer: pesticide

6. Gassy spoilage of green olives is usually caused by
Options
A. Enterobacter spp
B. Bacillus spp
C. Clostridium spp
D. all of these

Discuss

Correct Answer: all of these

7. Which of the following species of different genera of bacteria are not capable of transforming nitrate to nitrogen?
Options
A. Achromobacter
B. Agrobacterium
C. Alcaligenes
D. None of these

Discuss

Correct Answer: None of these

8. Denitrification may be distinguished as
Options
A. dissimilative
B. assimilative
C. both (a) and (b)
D. blue baby syndrome

Discuss

Correct Answer: both (a) and (b)

9. Iodophores are mixture of
Options
A. iodine and aldehydes
B. iodine and surface active agents
C. iodine and alcohols
D. iodine and phenols

Discuss

Correct Answer: iodine and surface active agents

10. The predominant kind of bacteria causing spoilage in fish at chilling temperature is
Options
A. species of Pseudomonas
B. Micrococcus
C. Bacillus
D. none of these

Discuss

Correct Answer: species of Pseudomonas

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Which is the most efficient complement fixing class of antibody?

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