Which of the following vitamins acts as coenzyme in the synthesis of purines and pyrimidines?

Which of the following pairs is/are not correctly matched?

1. Gallionella - Iron bacteria
2. Alcaligenes - Carboxydobacteria
3. Rhodospirillum - Hydrogen bacteria
4. Nitrobacter - Nitrifying bacteria

Ethanol is not one of the fermentation end products of

Which of the following matchings is/are correct?

1. Cyanobacteria : Chlorosomes
2. Green sulphur bacteria : Thylakoids
3. Purple bacteria : Chromatophores

Match the columns:

________ yields ethanol, lactic acid, formic acid, butanediol, acetoin, CO₂ and H₂ as fermentation end products.

Which of the following is a pair of microbes yielding lactic acid as fermentation end product?

Which of the following sulphate-reducing bacteria uses organic compounds from pyruvate synthase pathway as major C-source?

Which of the following bacteria yields butanol, acetone, isopropyl alcohol and CO₂ as fermentation end products?

Identify the false statements.

1. Ubiquinones are non-protein electron carriers located in the inner mitochondrial membrane.
2. Entner–Doudoroff pathway occurs both in prokaryotes as well as eukaryotes.
3. Non-cyclic photophosphorylation is absent in bacterial photosynthesis.
4. Bacteriochlorophyll absorbs in the range of 250-500 nm.

Pyruvate acts as metabolic precursor of which of the following amino acids?

1. Histidine
2. Serine
3. Alanine
4. Valine
5. Leucine

Identify the FALSE statement(s) regarding non-cyclic phosphorylation?

1. It is oxygenic process.
2. Only one light trapping system (PS I) is involved.
3. No NADPH is synthesised.
4. NADP acts as last electron acceptor.

__________ is an example of exclusively ketogenic amino acids.

The molecular formula of chlorophyll c₁ is

Which of the following is genus of chemosynthetic filamentous sulphur-oxidising bacteria?