Cellular Energy and Enzymes

For a particular chemical reaction, the change in free energy is found to be -5.6 kJ. What would be true of this reaction?

• It would be spontaneous

• It would not be spontaneous

• It would be endergonic

Choose the pair of terms that correctly completes this sentence: Catabolism is to anabolism as ____________ is to ________________.

• work, energy

• exergonic, spontaneous

• exergonic, endergonic

• free energy, entropy

Tags

NGSS.HS-PS3-1

Most cells are not able to use heat energy to perform work because _________

• heat does not involve a transfer of energy

• cells do not have much heat--they are relatively cool

• temperature is usually uniform throughout a cell

• heat can never be used to do work

Tags

NGSS.HS-PS3-4

Which of the following metabolic processes can occur without a NET influx of energy from some other process?

• ADP and P are joined to make ATP

• Glucose broken down into carbon dioxide and water

• Carbon dioxide and water are combined to make glucose

• amino acids joined to make proteins

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

If an enzyme solution is saturated with substrate, what is the most effective way to obtain a faster yield of products?

• add more of the enzyme

• heat the solution to 90 degrees C

• add more substrate

• add an allosteric inhibitor

Tags

NGSS.HS-PS1-2

Which of the following would lead to an increase in entropy?

• Amino acids joined to make proteins

• Glucose bonded to make glycogen

• starch broken down into glucose molecules

• peptide subunits joined to make a protein

Which of the following is true of the denaturation of proteins?

• covalent bonds between amino acids are broken

• function of the protein is not affected

• hydrogen bonds that hold the protein in its 3-D shape are broken

• R groups are removed from amino acids

What is being shown in the image?

• Competitive inhibitor

• Allosteric inhibitor

• Enzyme-substrate complex

• Coenzyme

What is being shown in the image?

• Allosteric inhibition

• Competitive inhibition

• Coenzyme

• Enzyme substrate complex

True or false: Enzymes are usually able to catalyze both the forward and the reverse of a reaction.

• True

• False