Download App

STD 12 - 10. Biomolecules — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 10. Biomolecules4 Marks
MCQ
Which of the following statements is right
  • ✓
    Cellulose are linear polymers of $\beta - $glucose molecules with $\beta - 1,\,4 - $linkages
  • B
    Starches are polymers of $\alpha - $glucose molecules with $\beta - 1,\,4 - $linkages and some $\beta - 1,\,6 - $cross-linkages
  • C
    Proteins are polyamides of $\beta - $amino acids
  • D
    The structural information about their biosynthesis is contained in a class of compounds called nucleic acids, e.g. $RNA$ and $DNA$
✓

Answer

Correct option: A.
Cellulose are linear polymers of $\beta - $glucose molecules with $\beta - 1,\,4 - $linkages
a
Proteins are natural polymers. They are large biological molecules consisting of one or more chains of $\alpha$ - amino acids.

Starch is a polymer of glucose. It exists in two forms amylose and amylopectin. Amylose is formed by linkage of glucose by $\alpha-1,4$ glucose unit. It is a linear polymer. Amylopectin is a branched polymer of glucose where two polymeric chains of glucose of alpha 1,4 glucose unit are linked by $\alpha-1,6$ linkage.

Cellulose is linear homopolysaccharide of $\beta$ - glucose units, which are linked together by $\beta-1,4$ glycosidic bonds.

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

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Consider the following ${E^0}$values :

${E^0}_{F{e^{3 + }}/F{e^{2 + }}}$ $=$ $ + 0.77\;V$

${E^0}_{S{n^{2 + }}/Sn} = - 0.14\;V$ Under standard conditions the potential for the reaction $S{n_{(s)}} + 2F{e^{3 + }}(aq) \to 2F{e^{2 + }}(sq) + S{n^{2 + }}(aq)$ is ............ $\mathrm{V}$

→
The mass of $BaC{O_3}$ produced when excess $C{O_2}$ is bubbled through a solution of $0.205$ mol $Ba{(OH)_2}$ is ............ $\mathrm{gm}$
→
Colour is imported to glass by mixing
→
Assertion : $[Fe(CN)_6]^{3-}$ is weakly paramagnetic while $[Fe(CN)_6]^{4-}$ is diamagnetic.

Reason : $[Fe(CN)_6]^{3-}$ has $+3$ oxidation state while $[Fe(CN)_6]^{4-}$ has $+2$ oxidation state.

→
$E\xleftarrow{{KOH/Br_2}}D\xleftarrow[\begin{subarray}{l} 
  {\text{Partial}} \\ 
  {\text{Hydorlysis}} 
\end{subarray} ]{{{H_2}{O_2}/O{H^ - }}}C\xleftarrow{{NaCN}}{C_2}{H_5} - Cl\xrightarrow{{AgCN}}A\xrightarrow{{LiAl{H_4}}}B$

What is relationship between $'\,B\,'$ and $'\,E\,'$ ?

→
The product $(P)$ of the following reaction
→
At a given temperature, the vapour pressure of a solution of two volatile liquids $A$ and $B$ is given by the equation $P_S = 150 -60$  $X_B (X_B =$ mole fraction of $B)$ Vapour  pressure of pure $A$ and $B$ at the same temperature are respectively :-
→
The value of $\frac{{{t_{0.875}}}}{{{t_{0.50}}}}$ for $n^{th}$ order reaction is
→
$5\, g$ of benzene on nitration gave $6.6\, g$ of nitrobenzene . The theoretical yield of the nitrobenzene will be ............... $\mathrm{g}$
→
The decomposition of a hydrocarbon follows the equation $K = (4.5 \times 10^{11} \,s^{-1}) e^{-28000\,K/T.}$ What will the value of activation energy ? ........ $KJ\,mol^{-1}$
→