Update | Exam Prep
1. In which part of the mitochondria does ATP production occur as H+ ions flow
through?
Inner mitochondrial membrane
Mitochondrial matrix
ATP synthase
Cytoplasm
2. Describe the role of lysosomes in cellular metabolism and how they
contribute to the overall function of eukaryotic cells.
Lysosomes synthesize lipids for cellular membranes.
Lysosomes produce ATP for energy needs of the cell.
Lysosomes break down macromolecules, recycling cellular
components and aiding in metabolism.
Lysosomes store genetic information for protein synthesis.
3. What does the primary structure of a protein refer to?
The locations of the protein's α helices and β sheets
The structure that forms first as the protein folds into its most stable
form
The linear amino acid sequence of the protein
The overall three-dimensional shape of the protein
The locations of the peptide bonds that form the protein's backbone
,4. Which attribute contributes to water's unusual properties?
The geometry of the molecule
The bond angle of water
All of the answers are correct
The polarity of the O-H bonds
The ability of water molecules to hydrogen bond
5. Describe the process of proteolysis and its significance in metabolism.
Proteolysis involves the conversion of glucose into pyruvate for
energy production.
Proteolysis is the synthesis of proteins from amino acids.
Proteolysis refers to the breakdown of lipids into fatty acids.
Proteolysis is the process of breaking down proteins into amino
acids, which can then be used for energy or to synthesize new
proteins.
6. Which functional groups are commonly associated with carbohydrates?
Hydroxyl and carbonyl groups
Phosphate and sulfhydryl groups
Amino and carboxyl groups
Methyl and ethyl groups
7. The flow of hydrogen ions through ATP synthase resulting in the production
of ATP occurs during:
glycolysis
, chemiosmosis
The flow of electrons through the four protein complexes in the
electron transport chain
the formation of acetyl coenzyme A
the citric acid cycle
8. What is the general structure of a ketone?
A ketone consists of a hydroxyl group (–OH) attached to a carbon
atom.
A ketone has a carbonyl group (C=O) bonded to two carbon atoms.
A ketone is a saturated hydrocarbon with only single bonds.
A ketone is a molecule with a carboxyl group (–COOH) at the end of a
carbon chain.
9. What are the two key electron carriers produced during the breakdown of
biomolecules in energy production?
CoA and Acetyl-CoA
ATP and ADP
NADH and FADH2
Glucose and Fructose
10. Describe how carbohydrates contribute to cellular functions beyond energy
storage.
Carbohydrates serve as structural components and play roles in
cell signaling.
Carbohydrates are involved in protein synthesis only.
, Carbohydrates are solely for energy storage.
Carbohydrates do not have any significant roles in cells.
11. Describe the process by which nitrogen is converted and excreted in human
cells after amino acid degradation.
Nitrogen is released directly as ammonium into the bloodstream.
Nitrogen is converted to ammonia and released into the environment.
Nitrogen is converted to urea in the liver through the urea cycle and
then excreted in urine.
Nitrogen is stored as proteins in muscle tissue.
12. What is the most efficient structure to represent an organic compound?
Condensed formula
Molecular formula
Empirical formula
Structural formula
13. Describe the significance of the N-terminus and C-terminus in the primary
structure of proteins.
The N-terminus and C-terminus have no significance in protein
structure.
The N-terminus is where proteins are synthesized, and the C-terminus
is where they are degraded.
The N-terminus is the start of the protein chain, while the C-
terminus is the end, determining the directionality of the protein.
The N-terminus and C-terminus are interchangeable in protein
structure.