GATE XL 2020 Paper 1 — page 27

Questions 79–81 of 125. Imported answers require review unless explicitly marked reviewed.

Which one of the following statements about control of microbial growth is NOT correct?

Your answerChoose one option.

Nonionizing radiation leads to thymine dimers formation in DNA

Spores and mycoplasma can pass through membrane filters (0.22-0.45 μm)

Use of high concentration of salts and sugars to preserve food is a chemical method of microbial control

Thermoduric bacteria can survive pasteurization

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An example of a differential and selective medium in which colonies of Gram-negative bacteria produce large amounts of acidic products and appear green with a metallic sheen is

Your answerChoose one option.

Blood agar

EMB agar

MacConkey agar

Mannitol salt agar

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Which one of the following is an example of substrate level phosphorylation?

Your answerChoose one option.

Glucose to Glucose 6-phosphate

Fructose 6-phosphate to Fructose 1,6-bisphosphate

1,3-bisphosphoglycerate to 3-phosphoglycerate

2-phosphoglycerate to Phosphoenolpyruvate

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2020 · Paper 1

Question 14

Question 15

Question 16