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Chemistry of Amino Acids and Proteins in the Human Body

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Chemistry of Amino Acids and Proteins in the Human Body

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Questions and Answers

What is the role of proteins in nearly all chemical reactions in biological systems?

Act as energy reserves

Serve as reserves of metal ions and amino acids

Facilitate enzymatic catalysis (correct)

Form the major structural components of cell membranes

Which protein binds to iron for transport in the bloodstream?

Casein

Myoglobin

Albumin (correct)

Ovalbumin

What is the main role of membrane proteins in cells?

Storing metal ions and amino acids

Serving as energy reserves

Relaying signals within cells (correct)

Facilitating muscle contraction

Which proteins serve as reserves of metal ions and amino acids in the body?

Ferritin and Casein Signup and view all the answers

What are the major structural components of cell membranes?

Proteins and Lipids Signup and view all the answers

Which proteins are the major components of muscle, contributing to muscle contraction?

Actin and Myosin Signup and view all the answers

What provides support and shape to cells and tissues?

Proteins like collagen and elastin Signup and view all the answers

Which proteins defend vertebrates against bacterial and viral infections?

Antibodies Signup and view all the answers

What type of proteins are involved in the generation of nerve impulses?

Rhodopsin Signup and view all the answers

What are the basic structural units of proteins?

Amino acids Signup and view all the answers

At neutral pH, how are amino acids predominantly present in solution?

As dipolar ions (Zwitterions) Signup and view all the answers