Haemoglobin contains

We commonly call $ATP$ as the energy currency of the cell. Can you think of some other energy carriers present in a cell? Name any two.

$99 \%$ of living systems are made up of four elements:

Match List-$I$ with List-$II$:

$A$. Trypsin	$I$. Intercellular ground substance
$B$. Morphine	$II$. Lectin
$C$. Concanavalin	$III$. Enzyme
$D$. Collagen	$IV$. Alkaloid

Choose the correct answer from the options given below:

Identify the physical and chemical processes from the following:
$I - Ba(OH)_2 + H_2SO_4 \rightarrow BaSO_4 + 2H_2O$
$II -$ Ice $\rightarrow$ Water
$III -$ Water $\rightarrow$ Steam
$IV -$ Starch $\rightarrow$ Glucose
Which of these represent physical processes and chemical processes respectively?

Choose the correct option ($T$-true,$F$-false).
$(I)$ Melting point of oil is lower.
$(II)$ All amino acids are acidic.
$(III)$ Lipid is water soluble.
$(IV)$ Enzyme shows its highest activity at a particular temperature.
$I - II - III - IV$