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College Biochemistry Questions

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College Biochemical Pathways
Which of the following is a description of ATP?
  1. product of the citric acid cycle
  2. electron carrier in photosynthesis
  3. electron carried in cellular respiration
  4. also called Photosystem II
  5. also called Photosystem I
College Macromolecules
Which statement describes the quaternary structure of a protein?
  1. the sequence of amino acids in the polypeptide
  2. the coiling or folding of the polypeptide
  3. the intertwining of two or more polypeptides
  4. the 3-dimensional appearance of the polypeptide
  5. none of the above
College Biochemical Pathways
Which of the following are products of light dependent reactions?
  1. O2
  2. Glucose
  3. NADPH
  4. ATP
  5. A,C, and D
College Biochemical Pathways
A product of photosynthesis is molecular oxygen. What is the source of this oxygen?
  1. water and carbon dioxide
  2. carbon dioxide and glucose
  3. water
  4. carbon dioxide
  5. none of the above
College Macromolecules
What is the optimal temperature range for the majority of enzymes?
  1. 40-55 C
  2. 35-40 C
  3. 25-30 C
  4. 15-20 C
  5. 45-50 C
College Macromolecules
Which action could produce a carbonyl group?
  1. the replacement of the --OH of a carboxyl group with hydrogen
  2. the addition of a thiol to a hydroxyl
  3. the addition of a hydroxyl to a phophate
  4. the replacement of the nitrogen of an anime with oxygen
College Macromolecules
The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are in the alpha form. Which of the following could amylase break down?
  1. glycogen, starch, and amylopectin
  2. glycogen and cellulose
  3. cellulose and chitin
  4. starch, chitin, and cellulose
College Macromolecules
Which aren't properties of nucleic acid?
  1. large complex molecule
  2. stores and transports information
  3. includes DNA
  4. can act as enzymes
  5. have a pH of 8-14
College Biochemical Pathways
In the absence of O2, cells capable of fermentation                                  .
  1. no longer produce ATP.
  2. can oxidize FAD.
  3. can oxidize NADH to produce NAD+.
  4. accumulate glucose.
  5. accumulate pyruvate.
College Biochemical Pathways
The first stage of glucose oxidation is called                   ?
  1. glycolysis
  2. intermediate stage
  3. glycogenisis
  4. citric acid cycle
College Biochemical Pathways
What is the final electron receptor in the ETC in cellular respiration?
  1. NADH
  2. FADH2
  3. CO2
  4. H2O
  5. Oxygen
College Biochemical Pathways
In the electron transport chain, the final electron acceptor is                             .
  1. oxygen
  2. a molecule of carbon dioxide
  3. a molecule of water
  4. ADP
  5. ATP
College Biochemical Pathways
The sum total of all the chemical reactions in a living structure is called its                .
  1. energetic
  2. activity
  3. digestive power
  4. entropy
  5. metabolism
College Biochemical Pathways
Which of the following is not a place involved in Photosynthesis?
  1. Thylakoid Membrane
  2. Stroma
  3. Outer Membrane
  4. Cell Membrane
College Biochemical Pathways
In the electron transport chain, in what location does light get absorbed?
  1. Photosystem I
  2. Photosystem II
  3. Mobile Electron Carrier
  4. Both A and B
  5. A, B, and C
College Biochemical Pathways
Where does glycolysis occur?
  1. in the cristae of the mitochondria
  2. in the cytoplasm
  3. in the matrix of the mitochondria
  4. in the chloroplasts
College Macromolecules
Organic Molecules contain which two elements?
  1. Carbon and Hydrogen
  2. Oxygen and Hydrogen
  3. Oxygen and Carbon
  4. Nitrogen and Oxygen
College Macromolecules
Which of the following is a monosaccharide?
  1. Glucose
  2. lactose
  3. cellulose
  4. sucrose
College Biochemical Pathways
What is true about the thylakoid membrane?
  1. Its the site of light dependent reactions
  2. They completely fill the chloroplast
  3. They are used to contain glucose and fructose that is made from carbon fixation
  4. They absorb light and donate the energy to carbon fixation
  5. They float freely in the stroma
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