Recent questions tagged cell-biology

Cancer cells display a high level of heterogeneity in the expression of TP$53$ protein. Which of the following techniques can be directly used to determine the intratumor...

For monoclonal antibody production, hypoxanthine $\_\_\_\_$.allows DNA synthesis in the absence of de novo dTMP synthesisallows purine synthesis in cells containing HGPRT...

Which one of the following options represents the products of light reactions of photosynthesis in plants?$\mathrm{O}_{2} / \mathrm{NADH} / \mathrm{H}_{2}$$\mathrm{O}_{2}...

To determine the viable cell count of a bacterial culture, you have plated $50 ~\mu \mathrm{~L}$ of a $100$ -fold diluted sample of the culture on a nutrient agar plate a...

Match the biomolecules in Column $\text{I}$ with their function given in Column $\text{II}$\[\begin{array}{|l|l|}\hline\text{Column I} & \text{Column II} \\\hline\text{P....

In the process of generating a clonal mammalian cell line, a single cell was seeded in a well of a cell culture plate. After the first $48$ hours, one of the progeny cell...

​​​​​Which one of the following hosts is used in mammalian cell culture for the production of glycosylated recombinant therapeutic proteins?Pichia pastorisSf$9$ cellsEsch...

​​​​Which of the following features is/are used to distinguish Archaea from Bacteria?Gram-stainingPeptidoglycan in the cell wallPresence of N -acetylglucosamine$16 S$ rRN...

​​​​Which of the following proteins is/are involved in intraflagellar transport?MicrotubulesMyosinActinKinesin

​​​​Which of the following statements is/are true about telomerase?Telomerase has $5^{\prime}-3^{\prime}$ DNA-dependent DNA polymerisation activityTelomerase has $5^{\pri...

Co-translational translocation of proteins is observed in $\_\_\_\_\_\_\_$.endoplasmic reticulumGolgi complexmitochondriaperoxisomes

A cultured skin fibroblast cell of a goat ' $\mathrm{P}$ ' was fused with an enucleated ovum of a goat ' $\mathrm{Q}$ '. The resultant activated early embryo was then tra...

Krebs $\text{(TCA)}$ cycle is $\_\_\_\_\_\_$ pathway.only an anaboliconly a catabolic an amphibolica pyogenic

Match the item (Column I) with its corresponding use (Column II).\begin{array}{|c|c|c|}\hline \text{Column I} & \text{Column II} \\\hline \text{P. Glutamine} & 1. \text{D...

Match the item in Column I with the corresponding technique in Column II.\begin{array}{|c|c|c|}\hline & \text{Column I} & \text{Column II} \\\hline & \text{P. Blue laser}...

Which of the following is/are considered as biotic elicitor(s) in plant cell culture?CellulaseChitinChitosanMercuric chloride

Under which of the following conditions, a mammalian somatic cell fails to undergo mitosis during cell cycle?Initiation of cell plate formationIncomplete DNA replicationC...

Which one of the following is required for the development of B-cells in the bone marrow?Stromal cellsDendritic cellsKupffer cellsNK cells

Intracellular proteins are targeted for proteolytic degradation in proteasomes upon conjugation with ubiquitinintegrinpeptidasecalreticulin

In hybridoma technology, which one of the following enzymes is absent in the myeloma cells that are used for monoclonal antibody production?Hypoxanthine-guanine phosphori...

Match the types of RNA in Group I with their corresponding function in Group II.Group IGroup IIP. mRNA1. Serves as adaptors between mRNA and amino acids during protein sy...

Which of the following statement(s) is(are) TRUE about induced pluripotent stem cells?They can self-renewThey require specific signals to maintain their stemnessThey cann...

Which of the following is(are) plant protoplast fusogenic agent(s)?Sodium nitratePolyvinyl alcoholPolyethylene glycolBromoxynil

Match the component of eukaryotic cells (Column I) with its respective function (Column II).$$\begin{array}{lll} \textbf{Column I} & & \textbf{Column II} \\ \text{P. Lyso...

In animal cells, the endogenously produced $\text{miRNAs}$ silence gene expression bybase pairing with the $3’$-untranslated region of specific $\text{mRNAs}$blocking $\t...

Match the media component used in mammalian cell culture (Column I) with its respective role (Column II).$$\begin{array} {lll} \textbf{Column I} & & \textbf{Column II} \\...

Match the cell type (Column I) with its function (Column II).$$\begin{array} {lll} \textbf{Column I} & & \textbf{Column II} \\ \text{P. B cells} & & \text{1. Humoral immu...

The enzymes involved in ubiquitinylation of cell-cycle proteins are$\text{E}_{1}$ and $\text{E}_{2}$ Only$\text{E}_{1}$ and $\text{E}_{3}$ Only$\text{E}_{1}$ and $\text{E...

Which of the following is(are) $\text{COMMON}$ feature(s) for both aerobic and anaerobic bacterial cultures?Glycolysis$\text{NAD}^{+}$ is the oxidising agentOxidative pho...

Which of the following statement(s) regarding trafficking in eukaryotic cells is(are) CORRECT?Dynamic binds $\text{GTP}$ and is involved in vesicle buddingDynamic is invo...

Figure below depicts simplified metabolic and transport reactions taking place in the production of $\text{B}$ from $\text{A}$ in a cell. The subscript $ i\text{’}$ refer...

The enzyme that transcribes the eukaryotic genes encoding precursor ribosomal $\text{RNAs}\; (\text{pre-RNAs}$) of $28S$, $18S$ and $5.8S$ $\text{rRNA}$s is$\text{RNA}$ p...

The process by which intracellular macromolecules are supplied for lysosomal degradation during nutrient starvation isapoptosisautophagyphagocytosispinocytosis

Which of the following cell organelle(s) is/are surrounded by a single phospholipid membrane?Golgi apparatusLysosomeMitochondriaNucleus