smartypants22
New member
Please help!
1. An important group of peripheral membrane proteins are enzymes, such as the phospholipases that attack the head groups of phospholipids leading to the degradation of damaged membranes. What properties must these enzymes exhibit?
a) resistance to degradation
b) water solubility
c) independence from cofactor interaction
d) lipid solubility
e) membrane spanning domains
2. Why does the oxidation of organic compounds by molecular oxygen to produce CO2 and water release free energy?
a) The oxidation of organic compounds can be used to make ATP.
b) Electrons are being moved from atoms that have a lower affinity for electrons (such as c) to atoms with a higher affinity for electrons (such as O).
c) The covalent bonds in organic molecules are higher energy bonds than those in water and carbon dioxide.
d) The electrons have a higher potential energy when associated with water and CO2 than they do in organic compounds.
e) The covalent bond in O2 is unstable and easily broken by electrons from organic molecules.
3. During glycolysis, when glucose is catabolized to pyruvate, most of the energy of glucose is:
a) transferred to ADP, forming ATP.
b) used to phosphorylate fructose to form fructose-6-phosphate.
c) retained in the pyruvate.
d) stored in the NADH produced.
e) transferred directly to ATP.
4. Which of the following is a true distinction between fermentation and cellular respiration?
a) Only respiration oxidizes glucose.
b) Substrate-level phosphorylation is unique to fermentation.
c) Fermentation, but not respiration, is an example of a catabolic pathway.
d) NADH is oxidized by the electron transport chain in respiration only.
e) NAD+ functions as an oxidizing agent only in respiration.
Thanks so much if you can answer these 4 questions. You will be saving my life! lol.
1. An important group of peripheral membrane proteins are enzymes, such as the phospholipases that attack the head groups of phospholipids leading to the degradation of damaged membranes. What properties must these enzymes exhibit?
a) resistance to degradation
b) water solubility
c) independence from cofactor interaction
d) lipid solubility
e) membrane spanning domains
2. Why does the oxidation of organic compounds by molecular oxygen to produce CO2 and water release free energy?
a) The oxidation of organic compounds can be used to make ATP.
b) Electrons are being moved from atoms that have a lower affinity for electrons (such as c) to atoms with a higher affinity for electrons (such as O).
c) The covalent bonds in organic molecules are higher energy bonds than those in water and carbon dioxide.
d) The electrons have a higher potential energy when associated with water and CO2 than they do in organic compounds.
e) The covalent bond in O2 is unstable and easily broken by electrons from organic molecules.
3. During glycolysis, when glucose is catabolized to pyruvate, most of the energy of glucose is:
a) transferred to ADP, forming ATP.
b) used to phosphorylate fructose to form fructose-6-phosphate.
c) retained in the pyruvate.
d) stored in the NADH produced.
e) transferred directly to ATP.
4. Which of the following is a true distinction between fermentation and cellular respiration?
a) Only respiration oxidizes glucose.
b) Substrate-level phosphorylation is unique to fermentation.
c) Fermentation, but not respiration, is an example of a catabolic pathway.
d) NADH is oxidized by the electron transport chain in respiration only.
e) NAD+ functions as an oxidizing agent only in respiration.
Thanks so much if you can answer these 4 questions. You will be saving my life! lol.