<span>Specialized cells protect the human body from disease-causing microbes by producing chemicals that destroy the microbes. </span>
The right answers are B, C and D.
An enzyme is a protein with catalytic properties. Virtually all biomolecules capable of catalyzing chemical reactions in cells are enzymes; some catalytic biomolecules, however, consist of RNA and are therefore distinct enzymes: they are ribozymes.
An enzyme acts by lowering the activation energy of a chemical reaction, which increases the rate of reaction.
A cell is the smallest unit<span> of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the</span>basic<span> building blocks of all organisms.</span>
This statement is true. If the PRIMARY GERM LAYERS fail to form normally, with any defects, during the gastrulation, the embryo could possibly develop any misshapen organs, that will results a birth defect to the infant when born.
