Protein Structure Quiz

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What is the function of structural proteins?

Transport items in and out of cells

Bind to foreign substances and target them for destruction

Speed up chemical reactions in cells

Help cells keep their shape (correct)

Which type of protein structure refers to the specific interaction and orientation of subunits?

Secondary structure

Tertiary structure

Quaternary structure (correct)

None of the above

What do enzymes do in cells?

Bind to foreign substances

Help maintain cell shape

Speed up chemical reactions (correct)

Transport items in and out of cells

Which type of protein structure consists of alpha helix and beta-sheet patterns?

Secondary structure Signup and view all the answers

What is the role of antibodies in the body?

Bind to foreign substances and target them for destruction Signup and view all the answers

Which structure combines sections of specific secondary structures along with more random areas?

Tertiary structure Signup and view all the answers

What is the role of hydrochloric acid in the digestive system?

Breaking down proteins in the stomach Signup and view all the answers

Why does the acid from the stomach need to be neutralized when it enters the small intestine?

To maintain a basic environment for enzyme activity Signup and view all the answers

What is the main function of enzymes in biochemical reactions?

Breaking down macromolecules Signup and view all the answers

Which type of carbohydrates end with an '-ose' suffix?

Monosaccharides Signup and view all the answers

What is the stoichiometric formula for carbohydrates?

(CH2O)n Signup and view all the answers

Why do carbohydrates crystallize with difficulty?

As a result of hydrogen bonding with water Signup and view all the answers

Which enzyme type assists in the transportation of functional groups between molecules?

Transferases Signup and view all the answers

What is the main function of Ligases enzymes?

Formation of an isomer of a compound Signup and view all the answers

What is the role of an inhibitor in enzyme function?

Prevent the chemical reaction Signup and view all the answers

What is the function of an active site on an enzyme?

Bind to substrates and initiate the reaction Signup and view all the answers

Which term describes a molecule that facilitates a chemical reaction but is not consumed by it?

Enzyme Signup and view all the answers

What happens when an inhibitor binds to an enzyme?

The reaction is impeded or slowed down Signup and view all the answers

What is the general formula for saturated fatty acids?

CnH2n+2 Signup and view all the answers

Which type of fatty acids are chemically more reactive and prone to rancidity?

Polyunsaturated fatty acids Signup and view all the answers

What is the primary function of natural waxes in nature?

As a coating to protect from dehydration and predators Signup and view all the answers

In phospholipids, which group is the negatively-charged polar head?

The phosphate group Signup and view all the answers

What type of reaction is characteristic of unsaturated hydrocarbons?

Addition reaction Signup and view all the answers

What class of saponifiable lipids are formed from the reactions of glycerol with 3 equivalents of fatty acids?

Triacylglycerols Signup and view all the answers

What role do inhibitors play in the body?

Slowing down or turning off reactions Signup and view all the answers

Which type of inhibition involves molecules that store information for cellular growth and reproduction?

Uncompetitive inhibition Signup and view all the answers

What are the bases found in RNA according to the text?

A, C, G, U Signup and view all the answers

What is the pentose sugar in DNA?

Deoxyribose Signup and view all the answers

In DNA and RNA, which molecule consists of long chains of monomers called nucleotides?

Nucleic acids Signup and view all the answers

What does RNA polymerase do during transcription?

Copies DNA into RNA Signup and view all the answers

What is the function of ribosomal RNA (rRNA)?

Make up ribosomes where protein synthesis occurs Signup and view all the answers