Microbial Metabolism
Description: Microbiology GATE Life Sciences Biotechnology Microbial Metabolism | |
Number of Questions: 15 | |
Created by: Adhira Saini | |
Tags: Microbiology GATE Life Sciences Biotechnology Microbial Metabolism |
Which of the following statements is/are TRUE regarding bacterial photosynthesis?
- Bacteriochlorophyll absorbs in the range of 650-750nm.
- Water acts as photosynthetic electron donor.
- Noncyclic photophosphorylation is absent. Select the correct answer.
Lithotrophs are categorized into different physiological groups based on their inorganic substrate for energy production and growth. Which of the following ‘physiological group: energy source’ pair are not correct?
- Hydrogen bacteria: H2
- Methanogens: CH4
- Carboxydobacteria: CO
- Iron bacteria: Fe+++
Which of the following statements is/are FALSE regarding Entner–Doudoroff pathway?
- It is an alternate series of reactions that catabolize glucose to pyruvate.
- It occurs both in prokaryotes as well as eukaryotes.
- It has a net yield of 2 ATP for every glucose molecule metabolized. Select the correct answer.
Which of the following is an example of gram-positive bacteria having ability to oxidize glucose by Entner–Doudoroff pathway?
Entner-Doudoroff pathway was first discovered by Michael Doudoroff and Nathan Entner in _________.
Which of the following is/are non-protein electrons carrier molecule(s) in electron transport chains?
- NADH-Q reductase
- Cytochromes
- Ubiquinones
Match the column – I (Microorganism) with column – II (Physiological group) and select the correct option.
Column – I | Column – II |
P. Gallionella | 1. Nitrifying bacteria |
Q. Alcaligenes | 2. Hydrogen bacteria |
R. Rhodospirillum | 3. Carboxydobacteria |
S. Nitrobacter | 4. Iron bacteria |
Match the column – I (Type of organism) with column – II (Site of photosynthesis) and select the correct option.
Column – I | Column – II |
A. Cyanobacteria | 1. Chromatophores |
B. Green sulphur bacteria | 2. Chlorosomes |
C. Purple bacteria | 3. Thylakoids |
ASSERTION (A): During aerobic respiration, lesser number of ATPs is produced in eukaryotes than in prokaryotes. REASON (R): In eukaryotes some energy is lost when electrons are shuttled across the mitochondrial membranes that separate glycolysis (in cytoplasm) from the electron transport chain.
In the following question there are two statements, Assertion (A) and Reason (R), consider both the statements independently and mark your answers as under:
1. If A and R both are correct and R is correct explanation of A.
2. If A and R both are correct and R is not correct explanation of A.
3. If A is correct and R is incorrect.
4. If A is incorrect and R is correct.
5. If A and R both are incorrect.
Which of the following is a pair of dissimilative sulfur reducers?
Which of the following is a set of microbes yielding lactic acid as fermentation end product?
Which of the following sulfate-reducing bacteria uses CO2 from reverse TCA cycle as major C-Source?
Ethanol is one of the fermentation end products of
- Enterobacter
- Escherichia
- Clostridium
- Saccharomyces
- Salmonella
- Streptococcus
Match the column – I (Microorganism) with column – II (Industrial product) and select the correct option.
Column – I | Column – II |
P. Gluconobacter | 1. Cheese |
Q. Aspergillus | 2. Citric Acid |
R. Streptococcus | 3. Vitamin C |
S. Saccharomyces | 4. Glycerol |
Match the column – I (Energy-Producing Process) with column – II (Final Electron Acceptor) and select the correct option.
Column – I | Column – II |
A. Aerobic Respiration | 1. An organic molecule |
B. Anaerobic Respiration | 2. Molecular oxygen |
C. Fermentation | 3. An inorganic substances |