Recent questions in General Biology

Answer the question based on the information given below:The purification data for an enzyme is given below:$\begin{array}{|l|l|l|l|l|l|} \hline & \text{Step} & \text{Vol...

Answer the question based on the information given below:The purification data for an enzyme is given below:$\begin{array}{|l|l|l|l|l|l|} \hline & \text{Step} & \text{Vol...

$\text{Statement for Linked Answer Questions 52 and 53:}$An E $coli$ cell of volume $10^{-12}$ $cm^3$ contains 60 molecules of lac-repressor. The repressor has a binding ...

$\text{Statement for Linked Answer Questions 52 and 53:}$An E $coli$ cell of volume $10^{-12}$ $cm^3$ contains 60 molecules of lac-repressor. The repressor has a binding ...

Match the high energy compounds in $\text{Group I}$ with the biosynhetic pathways for the molecules in $\text{Group II}$.$\begin{array}{|l|l|l|l|} \hline & \text{Group I...

Match the vitamins in $\text{Group I}$ with the processes/reactions in $\text{Group II}$$\begin{array}{|l|l|l|l|} \hline & \text{Group I} && \text{Group II} \\ \hline P. ...

An enzymatic reaction is described by the following rate expression.$$v = \frac{v_mS}{K_m+S+S^2/K_s},$$Which one of the following curves represents this expression?

A bacterial culture ($200 \: \mu l$ containing $1.8 \times 10^9$ cells) was treated with an antibiotic $Z$ ($50 \: \mu g$ per $ml$) for $4$ h at $37^\circ C$. After this ...

In a muscle, the extracellular and intracellular concentrations of ${Na^+}$ are $150 \text{ mM}$ and $12 \text{ mM}$, and those of ${K^+}$ are $2.7 \text{ mM}$ and $140 \...

$\text{Common Data Questions}$$\text{Common Data for Questions 48 and 49}$:In a muscle, the extracellular and intracellular concentrations of ${Na^+}$ are $\text{150 mM}$...

Match the organisms in Group I with the entries in Group II.$\begin{array}{|l|l|l|l|} \hline & \textbf{Group I}. && \textbf{Group II} \\ \hline P. & \textit{Clostridium...

Match the entries in $\text{Group I}$ with the methods of sterilization in $\text{Group II}$$\begin{array}{|l|l|l|l|} \hline & \textbf{Group I} && \text{Group II} \\ \h...

Match the entries in $\textbf{Group I}$ with those in $\textbf{Group II}$.$\begin{array}{|c|l|c|l|}\hline &\textbf{Group I} & {} & \textbf{Group II} \\\hline P. & \text{M...

A single base pair of DNA weighs $1.1 \times 10^{-21}$ grams. How many picomoles of a plasmid vector of length $2750$ bp are contained in 1 $\mu$g of purified DNA?$0.30$$...

Synteny refers togene duplication from a common ancestora tree representation of related sequencesthe extent of similarity between two sequenceslocal conservation of gene...

While searching a database for similar sequences, E value does NOT depend on thesequence lengthnumber of sequences in the databasescoring systemprobability from a normal ...

In transmission electron microscopy, electron opacity is greatly enhanced by treating the specimen withferrous ammonium sulfateuranium acetatesodium chloridebasic fuchsin

The helix content of a protein can be determined usingan infrared spectrometera fluorescence spectrometera circular dichroism spectrometera UV-Visible spectrophotometer

Which one of the following DNA sequences carries an invert repeat?ATGAGCCCCGAGTATACTCGGGGCTCATATGAGCCGGCTCTATACTCGGCCGAGATATGAGCCGAGCCTAACTCGGCTCGGATATGAGCCTATGGTATACTCGG...

In zinc finger proteins, the amino acid residues that coordinate zinc areCys and HisAsp and GluArg and LysAsp and Arg

The activity of an enzyme is expressed in International Units (IU). However, the S.I unit for enzyme activity is Katal. One Katal is$1.66 \times {10^4}$ IU$60$ IU$6 \time...

Identify the statement that is NOT applicable to an enzyme catalyzed reaction.Enzyme catalysis involves propinquity effectsThe binding of substrate to the active site cau...

An example of a derived protein structure database isPfamSCOPGEOProsite

An example of a program for constructing a phylogenetic tree isphylipphrapprodomPHDsec

A humanized antibody is one in which theheavy and light chains are from humanheavy chain is from human and light chain is from mouselight chain is from human and heavy ch...

Dimethyl sulfoxide (DMSO) is used as a cryopreservant for mammalian cell cultures becauseit is an organic solventit easily penetrates cellsit protects cells by preventing...

Nude mice refers tomice without skinmice without thymusknockout micetransgenic mice

Heat inactivation of serum is done to inactivateprionsmycoplasmacomplementpathogenic bacteria

Choose the correct signal transduction pathway.Hormone $\to$ 7 TM receptor $\to$ G protein $\to$ cAMP $\to$ PKAHormone $\to$ G protein $\to$ 7 TM receptor $\to$ cAMP $\t...

A protein is phosphorylated at a serine residue. A phosphomimic mutant of the protein can be generated by substituting that serine withglycinealanineaspartatethreonine

A truncated polypeptide is synthesized due to a nonsense mutation. Where would you introduce another mutation to obtain a full-length polypeptide?Ribosomal protein geneTr...

Idiotypic determinants of an antibody are associated with theconstant region of the heavy chainsconstant region of the light chainsvariable regionconstant regions of ligh...

Identification of blood groups involvesprecipitationneutralizationopsonizationagglutination

B-lymphocytes originate from the bone marrow whereas T-lymphocytes originate fromthymusbone marrowspleenliver

In mismatch correction repair, the parental DNA strand is distinguished from the daughter strand byacetylationphosphorylationmethylationglycosylation

In a chemostat, the feed flow rate and culture volume are $100$ ml/h and $1.0$ L, respectively. With glucose as substrate, the values of $\mu_{\text{max}}$ and $K_s$ are ...

Mammalian cells in active growth phase were seeded at a density of $1 \times 10^5$ cells/ml. After $72$ hours, $1 \times 10^6$ cells/ml were obtained. The population doub...

Yeast converts glucose to ethanol and carbon dioxide by glycolysis as per the following reaction: $$C_6H_{12}O_6 \to 2C_2H_5OH + 2CO_2$$Assuming complete conversion, the ...

First order deactivation rate constants for soluble and immobilized amyloglucosidase enzyme are $0.03 \text{ min}^{-1}$ and $0.005 \text{ min}^{-1}$, respectively. The ra...