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Tutorial for module BY1101 Cell biology revision: MCQ Joe Colgan BY1101 Introduction to Molecular and Cellular Biology.

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Presentation on theme: "Tutorial for module BY1101 Cell biology revision: MCQ Joe Colgan BY1101 Introduction to Molecular and Cellular Biology."— Presentation transcript:

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2 Tutorial for module BY1101 Cell biology revision: MCQ Joe Colgan (tcolgan@tcd.ie) BY1101 Introduction to Molecular and Cellular Biology

3 BY1101: Cell biology MCQ Multiple choice questions 30 questions (Slide will change every minute) Self assessment BY1101 Introduction to Molecular and Cellular Biology

4 Q. 1 What is the process by which monomers are linked together to form polymers? A.Hydrolysis B.Monomerization C.Protein formation D.Dehydration reactions E.Coiling

5 BY1101 Introduction to Molecular and Cellular Biology Q. 2 In a hydrolysis reaction, ______, and in this process water is _______. A.Monomers are assembled to produce a polymer........produced B.A monomer is broken up into its constituent polymers.......produced C.Monomers are assembled to produce a polymer........consumed D.A polymer is broken up into its constituent monomers.....produced E.A polymer is broken up into its constituent monomers.....consumed

6 BY1101 Introduction to Molecular and Cellular Biology 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 Waals B.Hydrogen C.Covalent D.Ionic E.Peptide

7 BY1101 Introduction to Molecular and Cellular Biology Q. 4 Which of the following is not a true polymer? A.Nucleic acids B.Proteins C.Lipids D.Carbohydrates E.None of the above

8 BY1101 Introduction to Molecular and Cellular Biology Q. 5 Protein molecules are polymers (chains) of _______. A.DNA molecules B.Amino acid molecules C.Fatty acid molecules D.Purines and pyrimidines E.Sucrose molecules

9 BY1101 Introduction to Molecular and Cellular Biology Q. 6 The peptide bond is _______. A.A covalent bond joining simple sugars together to form a polypeptide B.A covalent bond joining nucleotides together to form a nucleic acid C.A hydrogen bond joining nucleotides together to form a nucleic acid D.A hydrogen bond joining amino acids together to form a polypeptide E.A covalent bond joining amino acids together to form a polypeptide

10 BY1101 Introduction to Molecular and Cellular Biology Q. 7 The alpha helix and beta pleated sheets represent which level of protein structure: A.Primary structure B.Tertiary structure C.Secondary structure D.Pentiary structure E.Quaternary structure

11 BY1101 Introduction to Molecular and Cellular Biology Q. 8 The “primary structure” of a protein refers to ________. A.The alpha helix or beta pleated sheets B.The weak aggregation of two or more polypeptide chains into one functional macromolecule C.Coiling due to hydrogen bonding between amino acids D.Interactions among the side chains or R groups of the amino acids E.The sequence of amino acids

12 BY1101 Introduction to Molecular and Cellular Biology Q. 9 The overall three dimensional shape of a single polypeptide is called ________. A.Tertiary structure B.Primary structure C.Double helix D.Quaternary structure E.Secondary structure

13 BY1101 Introduction to Molecular and Cellular Biology Q. 10 A nucleotide is made up of which of the following chemical components? A.A nitrogenous base, a fatty acid, and an amino acid B.A nitrogenous base, an amino acid, and a phosphate group C.A series of nitrogenous bases, a nucleic acid backbone, and a hexose sugar D.A nitrogenous base, an amino acid, and a pentose sugar E.A nitrogenous base, a phosphate group, and a pentose sugar

14 BY1101 Introduction to Molecular and Cellular Biology 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 different C.They contain different sugars D.The first and second listed responses are correct differences E.The first three listed responses all describe differences

15 BY1101 Introduction to Molecular and Cellular Biology 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...........guanine B.Adenine...........cytosine C.Thymine..........guanine D.Adenine...........thymine E.Thymine..........cytosine

16 BY1101 Introduction to Molecular and Cellular Biology Q. 13 Which of the following is the simplest collection of matter that can live? A.Tissue B.Cell C.Organ D.Molecules E.None of the listed responses are correct

17 BY1101 Introduction to Molecular and Cellular Biology Q. 14 Bacterial cells are prokaryotic. Unlike a typical eukaryotic cell they ______. A.Have no membrane-bounded organelles in their cytoplasm B.Lack a plasma membrane C.Have a smaller nucleus D.Have no ribosomes E.Lack chromosomes

18 BY1101 Introduction to Molecular and Cellular Biology Q. 15 Which of the following structures is found in eukaryotic but not prokaryotic cells? A.Mitochondria B.Ribosomes C.DNA D.Cytosol E.Plasma membrane

19 BY1101 Introduction to Molecular and Cellular Biology Q. 16 What compartment of the cell is referred to as the “brain of the cell”? A.Ribosomes B.Nucleus C.Mitochondria D.Rough endoplasmic reticulum E.Golgi apparatus

20 BY1101 Introduction to Molecular and Cellular Biology 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

21 BY1101 Introduction to Molecular and Cellular Biology Q. 18 What component of the cell is involved in assembly of the ribosomal subunits? A.Ribosome B.Chromatin C.Nuclear membrane D.Nucleolus E.Nuclear pores

22 BY1101 Introduction to Molecular and Cellular Biology Q. 19 Which of the following categories best describes the function of the rough endoplasmic reticulum? A.Manufacturing B.Energy processing C.Structural support of cells D.Information storage E.Breakdown of complex foods

23 BY1101 Introduction to Molecular and Cellular Biology Q. 20 The sorting and packaging centre of the cell refers to what cellular component? A.Golgi apparatus B.Lysosome C.Nucleus D.Rough endoplasmic reticulum E.Mitochondria

24 BY1101 Introduction to Molecular and Cellular Biology Q. 21 A substance moving from outside the cell into the cytoplasm must pass through _________. A.The endomembrane system B.A microtubule C.The nucleus D.A ribosome E.The plasma membrane

25 BY1101 Introduction to Molecular and Cellular Biology Q. 22 Which of the following is/are possible site(s) of protein synthesis in a typical eukaryotic cell? A.The cytoplasm B.The rough endoplasmic reticulum C.In mitochondria D.The first two answers are correct E.The first three answers are correct

26 BY1101 Introduction to Molecular and Cellular Biology Q. 23 Which of the following statements about chloroplasts and mitochondria is true? A.Chloroplasts and mitochondria synthesize some of their own proteins B.Chloroplasts and mitochondria are components of the endomembrane system C.Mitochondria but not chloroplasts contain a small amount of DNA D.Chloroplasts and mitochondria have three sets of membranes E.Chloroplasts but not mitochondria are completely independent of the cell of which they are part

27 BY1101 Introduction to Molecular and Cellular Biology Q. 24 Which of the following structure is found in animal cells but NOT plant cells? A.Plasma membrane B.Golgi apparatus C.Mitochondria D.Centrioles E.Rough endoplasmic reticulum

28 BY1101 Introduction to Molecular and Cellular Biology Q. 25 Detoxification is a characteristic function of what type of organelle? A.Mitochondria B.Golgi apparatus C.Nucleus D.Peroxisome E.Rough endoplasmic reticulum

29 BY1101 Introduction to Molecular and Cellular Biology Q. 26 Which of the following cell structures exhibits selective permeability between a cell and its external environment? A.The plasma membrane B.Mitochondria C.Lysosomes D.Endoplasmic reticulum E.Chloroplasts

30 BY1101 Introduction to Molecular and Cellular Biology Q. 27 Which of the following statements about diffusion is true? A.It is a passive process B.It occurs when molecules move from a region of lower concentration to a region of higher concentration C.It always requires integral proteins of the cell membrane D.It is very rapid over long distances E.It requires expenditure of energy by the cell

31 BY1101 Introduction to Molecular and Cellular Biology Q. 28 Which of these statements describes some aspects of facilitated diffusion? A.There is only one kind of protein pore for facilitated diffusion B.Facilitated diffusion is another name for osmosis. C.Facilitated diffusion of solutes may occur through channel or transport proteins in the membrane D.Facilitated diffusion requires energy to drive a concentration gradient E.Facilitated diffusion of solutes occurs through phospholipid pores in the membrane

32 BY1101 Introduction to Molecular and Cellular Biology 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 not C.Active transport involves transport proteins, and facilitated diffusion does not D.Facilitated diffusion can move solutes against a concentration gradient, and active transport cannot E.Facilitated diffusion involves transport proteins, and active transport does not

33 BY1101 Introduction to Molecular and Cellular Biology Q. 30 Which of the following enables a cell to pick up and concentrate a specific kind of molecule? A.Channel proteins B.Receptor-mediated endocytosis C.Passive transport D.Osmosis E.Facilitated diffusion

34 Time is up Pass your answers to your neighbour and we will correct BY1101 Introduction to Molecular and Cellular Biology

35 Q. 1 What is the process by which monomers are linked together to form polymers? A.Hydrolysis B.Monomerization C.Protein formation D.Dehydration reactions E.Coiling Q. 2 In a hydrolysis reaction, ______, and in this process water is _______. A.Monomers are assembled to produce a polymer........produced B.A monomer is broken up into its constituent polymers.......produced C.Monomers are assembled to produce a polymer........consumed D.A polymer is broken up into its constituent monomers.....produced E.A polymer is broken up into its constituent monomers.....consumed

36 BY1101 Introduction to Molecular and Cellular Biology 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 Waals B.Hydrogen C.Covalent D.Ionic E.Peptide Q. 4 Which of the following is not a true polymer? A.Nucleic acids B.Proteins C.Lipids D.Carbohydrates E.None of the above

37 BY1101 Introduction to Molecular and Cellular Biology Q. 5 Protein molecules are polymers (chains) of _______. A.DNA molecules B.Amino acid molecules C.Fatty acid molecules D.Purines and pyrimidines E.Sucrose molecules Q. 6 The peptide bond is _______. A.A covalent bond joining simple sugars together to form a polypeptide B.A covalent bond joining nucleotides together to form a nucleic acid C.A hydrogen bond joining nucleotides together to form a nucleic acid D.A hydrogen bond joining amino acids together to form a polypeptide E.A covalent bond joining amino acids together to form a polypeptide

38 BY1101 Introduction to Molecular and Cellular Biology Q. 7 The alpha helix and beta pleated sheets represent which level of protein structure: A.Primary structure B.Tertiary structure C.Secondary structure D.Pentiary structure E.Quaternary structure Q. 8 The “primary structure” of a protein refers to ________. A.The alpha helix or beta pleated sheets B.The weak aggregation of two or more polypeptide chains into one functional macromolecule C.Coiling due to hydrogen bonding between amino acids D.Interactions among the side chains or R groups of the amino acids E.The sequence of amino acids

39 BY1101 Introduction to Molecular and Cellular Biology Q. 9 The overall three dimensional shape of a single polypeptide is called ________. A.Tertiary structure B.Primary structure C.Double helix D.Quaternary structure E.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 acid B.A nitrogenous base, an amino acid, and a phosphate group C.A series of nitrogenous bases, a nucleic acid backbone, and a hexose sugar D.A nitrogenous base, an amino acid, and a pentose sugar E.A nitrogenous base, a phosphate group, and a pentose sugar

40 BY1101 Introduction to Molecular and Cellular Biology 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 different C.They contain different sugars D.The first and second listed responses are correct differences E.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...........guanine B.Adenine...........cytosine C.Thymine..........guanine D.Adenine...........thymine E.Thymine..........cytosine

41 BY1101 Introduction to Molecular and Cellular Biology Q. 13 Which of the following is the simplest collection of matter that can live? A.Tissue B.Cell C.Organ D.Molecules E.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 cytoplasm B.Lack a plasma membrane C.Have a smaller nucleus D.Have no ribosomes E.Lack chromosomes

42 BY1101 Introduction to Molecular and Cellular Biology Q. 15 Which of the following structures is found in eukaryotic but not prokaryotic cells? A.Mitochondria B.Ribosomes C.DNA D.Cytosol E.Plasma membrane Q. 16 What compartment of the cell is referred to as the “brain of the cell”? A.Ribosomes B.Nucleus C.Mitochondria D.Rough endoplasmic reticulum E.Golgi apparatus

43 BY1101 Introduction to Molecular and Cellular Biology 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

44 BY1101 Introduction to Molecular and Cellular Biology Q. 18 What component of the cell is involved in assembly of the ribosomal subunits? A.Ribosome B.Chromatin C.Nuclear membrane D.Nucleolus E.Nuclear pores Q. 19 Which of the following categories best describes the function of the rough endoplasmic reticulum? A.Manufacturing B.Energy processing C.Structural support of cells D.Information storage E.Breakdown of complex foods

45 BY1101 Introduction to Molecular and Cellular Biology Q. 20 The sorting and packaging centre of the cell refers to what cellular component? A.Golgi apparatus B.Lysosome C.Nucleus D.Rough endoplasmic reticulum E.Mitochondria Q. 21 A substance moving from outside the cell into the cytoplasm must pass through _________. A.The endomembrane system B.A microtubule C.The nucleus D.A ribosome E.The plasma membrane

46 BY1101 Introduction to Molecular and Cellular Biology Q. 22 Which of the following is/are possible site(s) of protein synthesis in a typical eukaryotic cell? A.The cytoplasm B.The rough endoplasmic reticulum C.In mitochondria D.The first two answers are correct E.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 proteins B.Chloroplasts and mitochondria are components of the endomembrane system C.Mitochondria but not chloroplasts contain a small amount of DNA D.Chloroplasts and mitochondria have three sets of membranes E.Chloroplasts but not mitochondria are completely independent of the cell of which they are part

47 BY1101 Introduction to Molecular and Cellular Biology Q. 24 Which of the following structure is found in animal cells but NOT plant cells? A.Plasma membrane B.Golgi apparatus C.Mitochondria D.Centrioles E.Rough endoplasmic reticulum Q. 25 Detoxification is a characteristic function of what type of organelle? A.Mitochondria B.Golgi apparatus C.Nucleus D.Peroxisome E.Rough endoplasmic reticulum

48 BY1101 Introduction to Molecular and Cellular Biology Q. 26 Which of the following cell structures exhibits selective permeability between a cell and its external environment? A.The plasma membrane B.Mitochondria C.Lysosomes D.Endoplasmic reticulum E.Chloroplasts Q. 27 Which of the following statements about diffusion is true? A.It is a passive process B.It occurs when molecules move from a region of lower concentration to a region of higher concentration C.It always requires integral proteins of the cell membrane D.It is very rapid over long distances E.It requires expenditure of energy by the cell

49 BY1101 Introduction to Molecular and Cellular Biology Q. 28 Which of these statements describes some aspects of facilitated diffusion? A.There is only one kind of protein pore for facilitated diffusion B.Facilitated diffusion is another name for osmosis. C.Facilitated diffusion of solutes may occur through channel or transport proteins in the membrane D.Facilitated diffusion requires energy to drive a concentration gradient E.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 not C.Active transport involves transport proteins, and facilitated diffusion does not D.Facilitated diffusion can move solutes against a concentration gradient, and active transport cannot E.Facilitated diffusion involves transport proteins, and active transport does not

50 BY1101 Introduction to Molecular and Cellular Biology Q. 30 Which of the following enables a cell to pick up and concentrate a specific kind of molecule? A.Channel proteins B.Receptor-mediated endocytosis C.Passive transport D.Osmosis E.Facilitated diffusion

51 BY1101 Introduction to Molecular and Cellular Biology How did you do? For extra reading: Campbell Proteins and nucleic acids: Chapter 5 (sections 5.4 and 5.5) Tour of the cell: Chapter 6 Membrane structure and function: Chapter 7

52 BY1101 Introduction to Molecular and Cellular Biology Next week: Chromatography Read over practicals 2 and 3 Bring your practical book and any questions that you may have


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