Recent questions tagged medium

Vitamin $B_{12}$ contains

asked Mar 28, 2014 by thanvigandhi_1

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Insulin belongs to the category of

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Ergocalciferol is a name of vitamin

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Which name is associated with the chemical substances produced in ductless endocrine glands?

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With which of the following disease is Vitamin K associated?

asked Mar 28, 2014 by thanvigandhi_1

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Which one of the following is synthesized in our body by sun rays?

asked Mar 28, 2014 by thanvigandhi_1

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Which one of the following vitamins checks night blindness?

asked Mar 28, 2014 by thanvigandhi_1

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Find the sum of all the numbers between $200$ and $400$ which are divisible by $7$.

asked Mar 28, 2014 by rvidyagovindarajan_1

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ATP represents

asked Mar 28, 2014 by thanvigandhi_1

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Which of the following is correct about H-bonding in nucleotide?

asked Mar 28, 2014 by thanvigandhi_1

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Amino acids are least soluble in water

asked Mar 28, 2014 by thanvigandhi_1

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Which of the following is isomorphous with magnesium sulphate $(Mg SO_4. 7H_2O)$?

asked Mar 28, 2014 by meena.p

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The sequence of bases on $m-RNA$ molecule, synthesized on the $GCATA$ strand of $DNA$ is

asked Mar 28, 2014 by thanvigandhi_1

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Which of the following bases is not present in RNA?

asked Mar 28, 2014 by thanvigandhi_1

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In nucleic acids, the sequence is

asked Mar 28, 2014 by thanvigandhi_1

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Which of the following is an example of zwitter ion?

asked Mar 28, 2014 by thanvigandhi_1

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Lactose on hydrolysis yields

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Glucose reacts with $X$ number of molecules of phenylhydrazine to give osazone .The value of $X$ is

asked Mar 28, 2014 by thanvigandhi_1

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The charge on 1 gram ion of $Al^{3+}$ is :

asked Mar 28, 2014 by meena.p

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If the sum of $n,2n\:and\:3n$ terms of an A.P. are $S_1,S_2\:and\:S_3$ respectively, then show that $S_3=3(S_2-S_1)$

asked Mar 28, 2014 by rvidyagovindarajan_1

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The linkage holding monosaccaride units in maltose is

asked Mar 28, 2014 by thanvigandhi_1

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The acid showing salt like character in aqueous solute is

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Which of the following is not an amino acid?

asked Mar 28, 2014 by thanvigandhi_1

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Which substance is not present in nucleic acid?

asked Mar 28, 2014 by thanvigandhi_1

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The function of enzymes in the living systems is to

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The helical structure of protein is stabilised by

asked Mar 28, 2014 by thanvigandhi_1

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Glucose reacts with acetic anhydride and forms

asked Mar 28, 2014 by thanvigandhi_1

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$\begin{array}{1 1}(A)\;\text{For a banyan tree ecosystem,the population density should be measured by its biomass}\\(R)\;\text{Number undermines the huge role of banyan tree in the ecosystem}\end{array}$

asked Mar 28, 2014 by sreemathi.v

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Which of the following has three significant figures ?

asked Mar 28, 2014 by meena.p

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$\begin{array}{1 1}(A)\;\text{Lion is a keystone species of grassland}\\(R)\;\text{Due to their prudent nature,predators maintain the prey population in control and hence maintain species balance of the ecosystem}\end{array}$

asked Mar 28, 2014 by sreemathi.v

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$\begin{array}{1 1}(A)\;\text{Temperature is the most ecologically relevant factor}\\(R)\;\text{It affects the kinetics of enzymes & through it the BMR,activity and other physiological function of organism}\end{array}$

asked Mar 28, 2014 by sreemathi.v

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Find the equivalent weight of $H_3PO_4$ in the reaction. $Ca(OH)_2 +H_3 PO_4 \to CaHPO_4+2H_2O$

asked Mar 28, 2014 by meena.p

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$\begin{array}{1 1}(A)\;\text{Trophical rain-forests are disappearing fast from developing countries such as India}\\(R)\;\text{No value is attached to these forests as they are poor in biodiversity}\end{array}$

asked Mar 28, 2014 by sreemathi.v

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$\begin{array}{1 1}(A)\;GPP > NPP\\(R)\;GPP-R = NPP\end{array}$

asked Mar 28, 2014 by sreemathi.v

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$\begin{array}{1 1}(A)\;\text{No population of any species in nature has its disposal to unlimited resources to permit exponential growth}\\(R)\;\text{In nature,a given habitat has enough resources to support a maximum possible number beyond which no further growth is possible}\end{array}$

asked Mar 28, 2014 by sreemathi.v

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$\begin{array}{1 1}(A)\;\text{Pathogens are parasites}\\(R)\;\text{They may cause harm by living in or on them}\end{array}$

asked Mar 28, 2014 by sreemathi.v

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$\begin{array}{1 1}(A)\;\text{Energy flow in ecosystem is bidirectional}\\(R)\;\text{Energy goes on increasing with each and every trophic level}\end{array}$

asked Mar 28, 2014 by sreemathi.v

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$\begin{array}{1 1}(A)\;\text{Small animals are rarely found in desert}\\(R)\;\text{Generally surface are of desert animals are less in comparision to their volume}\end{array}$

asked Mar 28, 2014 by sreemathi.v

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Which of the following species is not invasive:-

asked Mar 28, 2014 by sreemathi.v

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2 main structural components of ecosystem

asked Mar 28, 2014 by sreemathi.v

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5g of ethane are confined in a bulb of 1 litre capacity . The bulb is so weak that it will burst if the pressure exceeds 10 atm. At what temperature will be the pressure of gas reach the bursting value?

asked Mar 28, 2014 by sharmaaparna1

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Soil formation accounts for what percentage of ecosystem services:-

asked Mar 28, 2014 by sreemathi.v

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Which of the following is present in carbon cycle but absent in phosphorous cycle:-

asked Mar 28, 2014 by sreemathi.v

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Atomic and molecular sizes are of the order of a few Angstrom (1 $\overset{\circ}{A} = 10^{-10}m)$ . Assuming that $N_2$ molecules is spherical in shape with radius $2\times10^{-10}m$ . Calculate the volume of single $N_2$ molecule.

asked Mar 28, 2014 by sharmaaparna1

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How much of sun light energy is converted into NPP:-

asked Mar 28, 2014 by sreemathi.v

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Number of trophic level in GFC are restricted due to :-

asked Mar 28, 2014 by sreemathi.v

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Major conduit of energy flow in aquatic ecosystem is :-

asked Mar 28, 2014 by sreemathi.v

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Which of the following is incorrect about detritus food chain

asked Mar 28, 2014 by sreemathi.v

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Which is wrong about humus:-

asked Mar 28, 2014 by sreemathi.v

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Human liver fluke is :-

asked Mar 28, 2014 by sreemathi.v

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