tutorial for module by1101 cell biology revision: mcq joe colgan (tcolgan@tcd.ie)

Tutorial for module BY1101Cell biology revision: MCQ

Joe Colgan (tcolgan@tcd.ie)

BY1101 Introduction to Molecular and Cellular Biology BY1101 Introduction to Molecular and Cellular Biology

BY1101: Cell biology MCQ

• Multiple choice questions • 30 questions (Slide will change every minute)• Self assessment

BY1101 Introduction to Molecular and Cellular Biology

Q. 1 What is the process by which monomers are linked together to form polymers?

A. HydrolysisB. MonomerizationC. Protein formationD. Dehydration reactionsE. Coiling

Q. 2 In a hydrolysis reaction, ______, and in this process water is _______.

A. Monomers are assembled to produce a polymer........producedB. A monomer is broken up into its constituent polymers.......producedC. Monomers are assembled to produce a polymer........consumedD. A polymer is broken up into its constituent monomers.....producedE. A polymer is broken up into its constituent monomers.....consumed

Q. 3 The type of bond that forms to join monomers (such as sugars and amino acids) into polymers (such as starch and proteins) is a(n) _______ bond.

A. Van der WaalsB. HydrogenC. Covalent D. IonicE. Peptide

Q. 4 Which of the following is not a true polymer?

A. Nucleic acidsB. ProteinsC. Lipids D. CarbohydratesE. None of the above

Q. 5 Protein molecules are polymers (chains) of _______.

A. DNA moleculesB. Amino acid moleculesC. Fatty acid moleculesD. Purines and pyrimidinesE. Sucrose molecules

Q. 6 The peptide bond is _______.

A. A covalent bond joining simple sugars together to form a polypeptideB. A covalent bond joining nucleotides together to form a nucleic acidC. A hydrogen bond joining nucleotides together to form a nucleic acidD. A hydrogen bond joining amino acids together to form a polypeptideE. A covalent bond joining amino acids together to form a polypeptide

Q. 7 The alpha helix and beta pleated sheets represent which level of protein structure:

A. Primary structureB. Tertiary structureC. Secondary structureD. Pentiary structureE. Quaternary structure

Q. 8 The “primary structure” of a protein refers to ________.

A. The alpha helix or beta pleated sheetsB. The weak aggregation of two or more polypeptide chains into one functional

macromoleculeC. Coiling due to hydrogen bonding between amino acidsD. Interactions among the side chains or R groups of the amino acidsE. The sequence of amino acids

Q. 9 The overall three dimensional shape of a single polypeptide is called ________.

A. Tertiary structureB. Primary structureC. Double helixD. Quaternary structureE. Secondary structure

Q. 10 A nucleotide is made up of which of the following chemical components?

A. A nitrogenous base, a fatty acid, and an amino acidB. A nitrogenous base, an amino acid, and a phosphate groupC. A series of nitrogenous bases, a nucleic acid backbone, and a hexose sugarD. A nitrogenous base, an amino acid, and a pentose sugarE. A nitrogenous base, a phosphate group, and a pentose sugar

Q. 11 Which of the following describes a difference between DNA and RNA?

A. RNA molecules consist of a single polynucleotide chain, whereas DNA molecules consist of two polynucleotide chains organised into a double helix

B. One of their nitrogenous bases is differentC. They contain different sugarsD. The first and second listed responses are correct differencesE. The first three listed responses all describe differences

Q. 12 On the basis of the principle of complementary base pairing, you would expect the percentage of ______ to be equal to the percentage of ________.

A. Adenine...........guanineB. Adenine...........cytosineC. Thymine..........guanineD. Adenine...........thymineE. Thymine..........cytosine

Q. 13 Which of the following is the simplest collection of matter that can live?

A. TissueB. CellC. OrganD. MoleculesE. None of the listed responses are correct

Q. 14 Bacterial cells are prokaryotic. Unlike a typical eukaryotic cell they ______.

A. Have no membrane-bounded organelles in their cytoplasmB. Lack a plasma membraneC. Have a smaller nucleusD. Have no ribosomesE. Lack chromosomes

Q. 15 Which of the following structures is found in eukaryotic but not prokaryotic cells?

A. MitochondriaB. RibosomesC. DNAD. CytosolE. Plasma membrane

Q. 16 What compartment of the cell is referred to as the “brain of the cell”?

A. RibosomesB. NucleusC. MitochondriaD. Rough endoplasmic reticulumE. Golgi apparatus

Q. 17 What is the functional connection between the nucleolus, nuclear pores, and the nuclear envelope?

A. The nucleolus contains messenger RNA (mRNA), which crosses the nuclear envelope through the nuclear pores

B. Subunits of ribosomes are assembled in the nucleolus and pass through the nuclear membrane via the nuclear pores

C. The nuclear pores are connections between the nuclear membrane and the endoplasmic reticulum that permit ribosomes to assemble on the surface of the ER

D. Endoplasmic reticulum membrane is produced in the nucleolus and leaves the nucleus through the nuclear pores

E. None of the listed responses are correct

Q. 18 What component of the cell is involved in assembly of the ribosomal subunits?

A. RibosomeB. ChromatinC. Nuclear membraneD. NucleolusE. Nuclear pores

Q. 19 Which of the following categories best describes the function of the rough endoplasmic reticulum?

A. ManufacturingB. Energy processingC. Structural support of cellsD. Information storageE. Breakdown of complex foods

Q. 20 The sorting and packaging centre of the cell refers to what cellular component?

A. Golgi apparatusB. LysosomeC. NucleusD. Rough endoplasmic reticulumE. Mitochondria

Q. 21 A substance moving from outside the cell into the cytoplasm must pass through _________.

A. The endomembrane systemB. A microtubuleC. The nucleusD. A ribosomeE. The plasma membrane

Q. 22 Which of the following is/are possible site(s) of protein synthesis in a typical eukaryotic cell? A. The cytoplasmB. The rough endoplasmic reticulumC. In mitochondriaD. The first two answers are correctE. The first three answers are correct

Q. 23 Which of the following statements about chloroplasts and mitochondria is true? A. Chloroplasts and mitochondria synthesize some of their own proteinsB. Chloroplasts and mitochondria are components of the endomembrane systemC. Mitochondria but not chloroplasts contain a small amount of DNAD. Chloroplasts and mitochondria have three sets of membranesE. Chloroplasts but not mitochondria are completely independent of the cell of

which they are part

Q. 24 Which of the following structure is found in animal cells but NOT plant cells? A. Plasma membraneB. Golgi apparatusC. MitochondriaD. CentriolesE. Rough endoplasmic reticulum

Q. 25 Detoxification is a characteristic function of what type of organelle? A. MitochondriaB. Golgi apparatusC. NucleusD. PeroxisomeE. Rough endoplasmic reticulum

Q. 26 Which of the following cell structures exhibits selective permeability between a cell and its external environment? A. The plasma membraneB. MitochondriaC. LysosomesD. Endoplasmic reticulumE. Chloroplasts

Q. 27 Which of the following statements about diffusion is true?

A. It is a passive processB. It occurs when molecules move from a region of lower concentration to a region

of higher concentrationC. It always requires integral proteins of the cell membraneD. It is very rapid over long distancesE. It requires expenditure of energy by the cell

Q. 28 Which of these statements describes some aspects of facilitated diffusion?

A. There is only one kind of protein pore for facilitated diffusionB. Facilitated diffusion is another name for osmosis. C. Facilitated diffusion of solutes may occur through channel or transport proteins

in the membraneD. Facilitated diffusion requires energy to drive a concentration gradientE. Facilitated diffusion of solutes occurs through phospholipid pores in the

membrane

Q. 29 Which of the following is a correct difference between active transport and facilitated diffusion?

A. Active transport can move solutes in either direction across a membrane, but facilitated diffusion can only move in one direction

B. Active transport requires energy from ATP, and facilitated diffusion does notC. Active transport involves transport proteins, and facilitated diffusion does notD. Facilitated diffusion can move solutes against a concentration gradient, and

active transport cannotE. Facilitated diffusion involves transport proteins, and active transport does not

Q. 30 Which of the following enables a cell to pick up and concentrate a specific kind of molecule?

A. Channel proteinsB. Receptor-mediated endocytosisC. Passive transportD. OsmosisE. Facilitated diffusion

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