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Protein Denaturation in Biology

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Questions and Answers

What gives each protein its unique structure and function?

The number of hydrogen atoms in the molecule

The color of the molecule

The specific number and order of amino acids (correct)

The type of carbonyl group attached

Which level of protein molecular structure refers to the specific number and order of amino acids in the protein chain?

Secondary structure

Quaternary structure

Tertiary structure

Primary structure (correct)

What is the main function of actin and tubulin proteins within the cell?

Providing structural support to the cell (correct)

Sending messages between cells

Transporting oxygen in the body

Carrying out metabolic reactions

What is the irreversible process that occurs when a protein loses its shape and structure?

Denaturation (C) Signup and view all the answers

Which type of protein structure involves the bonding of subunits within a protein from multiple polypeptide chains?

Quaternary Structure (C) Signup and view all the answers

Why are proteins considered organic molecules?

Because they contain carbon atoms (D) Signup and view all the answers

What is the primary role of chaperone proteins in the folding of a protein?

Encourage proper folding and assist in maintaining correct shape (D) Signup and view all the answers

What is one consequence of protein denaturation?

The protein loses its function and ability to bind to substrates (C) Signup and view all the answers

In sickle cell anemia, what change in the amino acid sequence leads to the abnormal shape of red blood cells?

Substituting a hydrophilic amino acid with a hydrophobic amino acid (D) Signup and view all the answers

What is the main function of microtubule strands in the cell?

Transport of materials (C) Signup and view all the answers

Which protein molecule acts as a receptor protein binding to the hormone estrogen and also acts as a transcription factor?

Estrogen receptor (C) Signup and view all the answers

What is the role of p53 protein in the cell?

Protect against DNA damage (B) Signup and view all the answers

Which protein molecule helps link neighboring cells together and promotes tissue structure?

Cadherin (D) Signup and view all the answers

What is the main function of the enzyme acetylcholinesterase in muscle cells?

Break down acetylcholine (C) Signup and view all the answers

Which protein molecule aids in restoring the natural membrane potential of neurons and allows for neuron communication?

Sodium-potassium pump (B) Signup and view all the answers