LQB182 EXAM STUDY QUESTIONS WITH ANSWERS| VERIFIED
LQB182 exam study questions
1.Which of these statements is true about isotopes?
A. The same number of neutrons and electrons, but different number of protons
B. The same number of protons and neutrons, but different number of electrons
C. The same number of protons and electrons, but different number of neutrons
D. All protons, electrons and neutrons have the same number
2.Which of these is not an example of intermolecular bonding?
A. Hydrogen bonds
B. Covalent bonds
C. Dipole-dipole bonds
D. Van der waals forces
3.What is the polymer of DNA if its monomer is a nucleotide base?
A. Polysaccharide
B. Polypeptide
C. Fatty acids
D. Nucleic acid
4.Which of these statements is false regarding the four levels of protein structure?
A. Secondary structures contain an N terminal (amino) and C terminal (carboxyl) at the start and end of its
chain
B. Quaternary structures result from interaction of two or more polypeptide subunits
C. Primary structures are the unique amino acid sequence in a linear polypeptide
D. Tertiary structures are the overall 3D shape of the polypeptide
5.Which of these describes the function of haemoglobin?
A. An enzymatic protein used to catalyse hydrolysis of bonds
B. A receptor in which the cell responds to ligands released by other neurons
C. A motor protein responsible for muscle contraction
D. A transport protein containing iron, which transfer oxygen from the lungs to other parts of the body
6. Which of these is not an example of a polysaccharide?
A. Glucose
B. Glycogen
C. Starch
D. Chitin
7.Based on the general formula of (CnH2nOn), which of these is correct for pentose?
A. C3H6O3
B. C4H8O4
C. C5H10O5
D. C6H12O6
8.What type of reaction is involved in the synthesis of a fat?
A. Glycosidic bond
B. Condensation (dehydration)
C. Peptide bond
D. Hydrolysis
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, 9.The molecule triacylglycerol, has three fatty acids and a glycerol molecule which has a linkage with which
functional group?
A. Ketone group
B. Ether group
C. Ester group
D. Aldehyde group
10.Which statement is true regarding saturated fatty acids?
A. There are no double bonds or bending
B. They are solid at room temperature
C. They can from cis and trans isomers
D. Both A and B
11.Which of these is not a function of fatty acids?
A. Energy storage
B. Energy production
C. Building blocks
D. Messenger molecules
12. Which of these is only found in a plant cell
A. Vacuole
B. Golgi apparatus
C. Mitochondria
D. Plasma membrane
13. Which of these correctly describes the role of the peroxisomes?
A. The intracellular digestion of hydrolytic enzymes through phagocytosis
B. The metabolism of fatty acids and other metabolites by producing H 2O2
C. The protein manufacture and trafficking in lumen space
D. Contains the DNA and all genetic information
14.What is the function of the cytoskeleton?
A. Maintain cell shape
B. Protect the cell
C. Involved in eukaryote cell division
D. All of the above
15.Which of these is fibres is a microtubule?
A. Actin
B. Vimentin
C. Tubulin
D. Kinesins
16.Which method of membrane transport requires energy in the form of ATP?
A. Passive diffusion
B. Facilitated diffusion
C. Osmosis
D. Active transport
17.Which of these statements is false regarding membrane proteins?
A. Peripheral proteins are bound indirectly to membrane by signal transduction
B. Integral membranes penetrate the hydrophobic core of lipid bilayer
C. There are six major functions of membrane proteins
D. Glycosylation occurs on the outside of the integral membrane protein
This study source was downloaded by 100000844708667 from CourseHero.com on 11-03-2022 10:19:38 GMT -05:00
https://www.coursehero.com/file/58807064/LQB182-exam-study-questionsdocx/
LQB182 exam study questions
1.Which of these statements is true about isotopes?
A. The same number of neutrons and electrons, but different number of protons
B. The same number of protons and neutrons, but different number of electrons
C. The same number of protons and electrons, but different number of neutrons
D. All protons, electrons and neutrons have the same number
2.Which of these is not an example of intermolecular bonding?
A. Hydrogen bonds
B. Covalent bonds
C. Dipole-dipole bonds
D. Van der waals forces
3.What is the polymer of DNA if its monomer is a nucleotide base?
A. Polysaccharide
B. Polypeptide
C. Fatty acids
D. Nucleic acid
4.Which of these statements is false regarding the four levels of protein structure?
A. Secondary structures contain an N terminal (amino) and C terminal (carboxyl) at the start and end of its
chain
B. Quaternary structures result from interaction of two or more polypeptide subunits
C. Primary structures are the unique amino acid sequence in a linear polypeptide
D. Tertiary structures are the overall 3D shape of the polypeptide
5.Which of these describes the function of haemoglobin?
A. An enzymatic protein used to catalyse hydrolysis of bonds
B. A receptor in which the cell responds to ligands released by other neurons
C. A motor protein responsible for muscle contraction
D. A transport protein containing iron, which transfer oxygen from the lungs to other parts of the body
6. Which of these is not an example of a polysaccharide?
A. Glucose
B. Glycogen
C. Starch
D. Chitin
7.Based on the general formula of (CnH2nOn), which of these is correct for pentose?
A. C3H6O3
B. C4H8O4
C. C5H10O5
D. C6H12O6
8.What type of reaction is involved in the synthesis of a fat?
A. Glycosidic bond
B. Condensation (dehydration)
C. Peptide bond
D. Hydrolysis
This study source was downloaded by 100000844708667 from CourseHero.com on 11-03-2022 10:19:38 GMT -05:00
https://www.coursehero.com/file/58807064/LQB182-exam-study-questionsdocx/
, 9.The molecule triacylglycerol, has three fatty acids and a glycerol molecule which has a linkage with which
functional group?
A. Ketone group
B. Ether group
C. Ester group
D. Aldehyde group
10.Which statement is true regarding saturated fatty acids?
A. There are no double bonds or bending
B. They are solid at room temperature
C. They can from cis and trans isomers
D. Both A and B
11.Which of these is not a function of fatty acids?
A. Energy storage
B. Energy production
C. Building blocks
D. Messenger molecules
12. Which of these is only found in a plant cell
A. Vacuole
B. Golgi apparatus
C. Mitochondria
D. Plasma membrane
13. Which of these correctly describes the role of the peroxisomes?
A. The intracellular digestion of hydrolytic enzymes through phagocytosis
B. The metabolism of fatty acids and other metabolites by producing H 2O2
C. The protein manufacture and trafficking in lumen space
D. Contains the DNA and all genetic information
14.What is the function of the cytoskeleton?
A. Maintain cell shape
B. Protect the cell
C. Involved in eukaryote cell division
D. All of the above
15.Which of these is fibres is a microtubule?
A. Actin
B. Vimentin
C. Tubulin
D. Kinesins
16.Which method of membrane transport requires energy in the form of ATP?
A. Passive diffusion
B. Facilitated diffusion
C. Osmosis
D. Active transport
17.Which of these statements is false regarding membrane proteins?
A. Peripheral proteins are bound indirectly to membrane by signal transduction
B. Integral membranes penetrate the hydrophobic core of lipid bilayer
C. There are six major functions of membrane proteins
D. Glycosylation occurs on the outside of the integral membrane protein
This study source was downloaded by 100000844708667 from CourseHero.com on 11-03-2022 10:19:38 GMT -05:00
https://www.coursehero.com/file/58807064/LQB182-exam-study-questionsdocx/
