Proteins

Which describes the functions of proteins in living things?

• structural, transport, signaling, catalysts, etc.

• stores and transmits genetic information

• stores energy and makes up cell membranes

• quick energy and forming cell structure

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NGSS.HS-LS1-1

NGSS.HS-LS1-6

Proteins are composed of

• carbon

• hydrogen

• nitrogen

• phosphorus

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NGSS.HS-LS1-6

Proteins are polymers of __________.

• amino acids

• fatty acids

• carboxylic acids

• nucleic acids

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NGSS.HS-LS1-6

All proteins

• have a unique structure that determines their unique function.

• are exactly the same in function but different in structure.

• are exactly the same in structure but different in function.

• are enzymes.

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NGSS.HS-LS1-1

The order of amino acids determines the ______ and ultimately the function of a protein.

• shape

• color

• flavor

• texture

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NGSS.HS-LS1-1

Enzymes are ________ that act as ________.

• proteins, catalysts

• amino acids, proteins

• proteins, amino acids

• catalysts, carbohydrates

What is the function of enzymes in living things?

• increase the rate of chemical reactions

• form the basis of the plasma membrane

• main energy molecule for a cell

• insulation and protection

How does an enzyme influence a biological reaction?

• It increases the energy difference between reactants and products.

• It decreases the activation energy necessary to begin the chemical reaction.

• It increases the kinetic energy of reactants, thereby increasing their tendency to collide.

• It decreases the kinetic energy of reactants, enabling them to move through a chemical change.

What is a peptide bond?

• Bond that holds two amino acids together.
• A bond that holds hydrogen and oxygen molecules together.
• A bond that holds the phosphate group of one nucleotide and a sugar of a neighboring nucleotide.
• A bond that is formed by the sharing of electrons.

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NGSS.HS-LS1-6

Which analogy best describes the role enzymes play in cells?

• Like walls in buildings, enzymes provide structural support for the cell
• Like the person who helps you bag your groceries, enzymes speed up processes in cells
• Like books in libraries, enzymes store information that can be used by the cell when needed
• Like the fence around a yard, enzymes act as a barrier preventing entry to the cell.