Recent questions tagged microbial-metabolism

The major class of enzymes catalyzing the cleavage of $C-C, C-O, C-N$, or other bonds by elimination, leaving double bonds or rings, or addition of groups to double bonds...

Which of the following statements is/are CORRECT based on the electron donor $\text{(ED)}$ and electron acceptor $\text{(EA)}$ used in various bacterial mediated reaction...

In a batch culture experiment, $2$ cells of a microorganism were added to a growth medium. During the experiment, a lag phase of $1$ hour was first experienced by the add...

A sewage treatment plant employing activated sludge process is operated under the following conditions:Wastewater flow rate into the aeration $\operatorname{tank}=0.150 \...

​​​​​Choose the correct statement(s) from the following regarding the structure/ reproduction of microorganismsProkaryotes do not have nucleus but Eukaryotes have nucleus...

​​​​Consider the following statements related to nitrification process:Electron acceptor type vary depending on whether nitrosomonas or nitrobacter is involved.Predominan...

​​​​​Consider the following statements on microbial metabolismUtilization of carbon for cell synthesis is termed as anabolism. During catabolism, adenosine triphosphate (...

​​​​Consider the following figure of an activated sludge process (ASP), depicting the flow $(\mathbf{Q})$, substrate $(\mathbf{S})$, and microorganism concentration $(\ma...

​​​If microbial growth occurs under substrate unlimited conditions, according to Monod's kinetics, choose the correct option(s) from the followingMicrobial growth follows...

Enzymes with the class of enzymes are listed in the table.EnzymeClass of Enzyme$\text{(a)}$ Lactate dehydrogenase$\text{(i)}$ Isomerases$\text{(b)}$ Alanine racemase$\tex...

Read the following statementsi. Aerobic heterotrophic bacteria uses organic matter for carbon source and energy source.ii. Aerobic heterotrophic bacteria uses carbon diox...

The ratio of the moles of $\mathrm{CO}_2$ evolved to the moles of $\mathrm{O}_2$ consumed in respiration also called the respiratory quotient, is calculated for a carbohy...

Read the following statementsi. In endogenous metabolism by aerobic bacteria, electron acceptor is present inside the cells.ii. In endogenous metabolism by aerobic bacter...

Which of the following is the terminal electron acceptor in the electron transport chain of aerobic respiration?Water$\mathrm{NADH}$$\mathrm{O}_{2}$Cytochrome-c

In a sample, the growth of microbial cells started with an initial concentration of $5 \times 10^4$ cells per millilitre $(\mathrm{mL})$ of the sample. After a certain ti...

Which of the following is true for the nitrifying bacteria belonging to genus Nitrobacter?They are autotrophs.They are eukaryotes.They convert chemical energy to cellular...

Which of the following is/are correct for the process of glycolysis?There is net decrease in standard Gibbs free energy.The end product is glyceraldehyde 3-phosphate.Fist...

For an exponentially growing microbial culture, the specific growth rate $(\mu)$ is related to its doubling time $\left(\mathrm{t}_{\mathrm{d}}\right)$ by which one of th...

A typical plasmid-free bacterial cell having a single chromosome consists of $\sim 55 \%$ protein, $\sim 3 \%$ DNA and $\sim 21 \%$ RNA, where " $\% "$ " represents perce...