Unit 2: Biochemistry

Label the water molecule shown with the correct elements and charges. Also, label where the hydrogen bond is located.

a

b

c

d

e

hydrogen bond

negative

positive

oxygen

hydrogen

Tags

NGSS.MS-PS1-1

Match each function with the correct macromolecule.

• Carries genetic information for the cell.

• Nucleic Acid

• Provides short-term energy for cells and structure in plant cells.

• Carbohydrate

• Help catalyze chemical reactions in cells and provide structure

• Protein

• Provides long-term energy, protection/insulation, and helps with cell membrane structure.

• Lipid

The effect of temperature on the relative rate of action of an enzyme is represented in the graph. The optimum temperature for the action of this enzyme is around?

(a whole number with NO units)

Match the following parts of the Lock and Key model

a

b

c

d

Enzyme-Substrate Complex

Active Site

Substrate

Products

A(n) ________ is the smallest basic unit of matter.

Tags

NGSS.MS-PS1-1

A positively charged subatomic particle is called a(n) __________.

• proton
• electron

• neutron

• atom

Which action must occur for an enzyme to catalyze a chemical reaction?

• a competitive inhibitor must first bind to an active site

• a substrate must bind to an active site of the enzyme

• a substrate must bind to an allosteric site of the enzyme

• a noncompetitive inhibitor must first bind to an active site

Answer explanation

A substrate must bind to an enzyme's active site to be properly positioned for the enzyme to catalyze a chemical reaction.

A negatively charged subatomic particle is called a(n) __________.

• Proton

• Neutron

• Electron

• Quark

Which type of bond involves the transfer of electrons between atoms?

• Covalent

• Ionic

• Hydrogen

• Van der Waals Forces

Which type of bond involves the sharing of electrons between atoms?

• Covalent

• Ionic

• Hydrogen

• Van der Waals Forces

Tags

NGSS.HS-PS1-1