PLL HELP ASAP Probiotics. They come in the form of culture concentrates in certain foods, dietary supplements, and fermented dairy products, like yogurt or cheese. Probiotics are used to ferment the milk used to produce yogurt, cheeses, and kefir. They are the live, active cultures in this yogurt. Probiotics are often called good or helpful because they help keep your gut healthy.

b.have there own function.

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explanation:

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1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.