MCQ
Coenzyme among the following is:
  • A
    $\mathrm{Mg}^{++}$
  • B
    A part of $\text{sRNA}$
  • C
    A part of $\text{tRNA}$
  • $\text{FMN}$

Answer

Correct option: D.
$\text{FMN}$
Some enzymes require no chemical groups other than their amino acid residues for activity.
Others require an additional chemical component called as a cofactor.
The cofactor can be either one or more inorganic ions such as ferrous, divalent magnesium or divalent manganese and zinc ions or a complex organic or metallo $-$ organic molecule called as a coenzyme, e.g., $\text{FMN}$ or flavin mononucleotide, which transfers electrons in biochemical reactions and is derived from riboflavin or vitamin $B_2$​.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

When $S{O_2}$ is passed through cupric chloride solution
Aniline with solid $KOH$ and $CS_2$ gives :
Properties common to the elements manganese, iron, cobalt, nickel and copper include the ready formation by them all of

$(I)$ coloured ions in aqueous solution

$(II)$ oxides of nitrogen are formed on reaction with concentrated $HNO_3$

$(III)$ chlorides of formula $MCl_2$ and $MCl_3$

At $100\,^oC,$ the gaseous reaction $A \rightarrow 2B + C$ is found to be first order. Starting with pure $A,$ if at the end of $10\,\min$, the total pressure of the system is $160\, mm$ and after a long time, when dissociation of $A$ was complete, it was $300\, mm.$ The partial pressure of $A$ at the end of $10\,\min$ is .......... $mm$
With respect to the following reaction, consider the given statements :

$[Image]$

$(A)$ $o-$Nitroaniline and $p-$nitroaniline are the predominant products

$(B)$ $p-$Nitroaniline and $m-$nitroaniline are the predominant products

$(C)$ $HNO _{3}$ acts as an acid

$(D)$ $H _{2} SO _{4}$ acts as an acid

Molarity of a solution prepared by dissolving $75.5\,g$ of pure $ KOH $ in $540\,ml$ solution is .......... $M$
Chemically, detergent is:
Which element exist in free state mainly
Current in an electrolyte is carried by:
Given below are two statements, one is labelled as Assertion $A$ and the other is labelled as Reason $R$.

Assertion $A:$ The spin only magnetic moment value for $\left[ Fe ( CN )_6\right]^{3-}$ is $1.74 BM$, whereas for $\left[ Fe \left( H _2 O \right)_6\right]^{3+}$ is $5.92\,BM$.

Reason $R :$ In both complexes, $Fe$ is present in +3 oxidation state.

In the light of the above statements, choose the correct answer from the options given below: