MCQ
What is correct about enzymes
- AThey are most active at $pH$ $7.0$
- BThey are all amino acids
- ✓They are all proteins
- DThey are most active at a temperature of $0^°C$
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$(1)$ Frog is a poikilotherm.
$(2)$ Frog does not have any coronary circulation.
$(3)$ Heart is “myogenic” in nature.
$(4)$ Heart is autoexcitable.
$(a)$ Lecithin found in the plasma membrane is a glycolipid
$(b)$ Saturated fatty acids possess one or more $c = c$ bonds
$(c)$ Gingely oil has lower melting point, hence remains as oil in winter
$(d)$ Lipids are generally insoluble in water but soluble in some organic solvents
$(e)$ When fatty acid is esterified with glycerol, monoglycerides are formed
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