Question

In plants, enzymes are present
A. Only in flowers
B. Only in leaves
C. In all the living cells of the plant body
D. Only in parenchyma

Answer 1

Hint: Proteins acting as biological catalysts are enzymes. Chemical reactions are accelerated by catalysts. The molecules on which enzymes act are called substrates and the enzyme converts these substrates into molecules known as products. Nearly all metabolic processes in the cell involve enzyme catalysis in order to occur at rates high enough to sustain life.

Complete answer: Plants are multicellular organisms, mostly photosynthetic eukaryotes of the kingdom Plantae. Green plants obtain much of their energy from sunlight by photosynthesis through primary chloroplasts. Chlorophylls a and b are present in their chloroplasts, which gives them their green colour appearance. Building blocks are proteins, carbohydrates, fat, and fibre, but they do not have the energy required for biochemical reactions. Enzymes are catalysts that can supply energy. There are protein substances capable of catalyzing biological systems chemical reactions without undergoing any modifications on their own. In all living cells, they're made. No life cycle can be successfully carried out in the absence of enzymes. There are four types of plant enzymes. They are;
a) Proteases - They break down long protein chains into smaller chains of amino acids and ultimately into single amino acids. Amylases - reduces disaccharide polysaccharides: lactose, maltose, and sucrose.
b) Lipases - They break triglycerides and glycerol into individual fatty acids.
c) Cellulases - They digest complex bonds of carbohydrates found in fibres.
Hence, option C is the correct answer.

Note: In addition to having a substrate to operate on, in order to activate, enzymes need heat, proper pH and moisture. All enzymes operate within restricted temperature ranges. Enzymes play an important role in all living organisms in order to regulate the metabolic activities of the body.