A stem cell is a cell with the unique ability to develop into specialised cell types in the body.
C)Unicellular, <span>maybe microorganisms but this is misleading because not all unicellular organisms are microscopic.</span>
Green plants, protists and bacteria perform photosynthesis and are also called autotrophs
Answer:
Enzymes bind with chemical reactants called substrates. ... In others, two substrates may come together to create one larger molecule. Two reactants might also enter a reaction, both become modified, and leave the reaction as two products. The enzyme's active site binds to the substrate.