Military High School AL- Ain. Grade 10 &11. Biology Sample Questions. Student Name: Computer #:

Transcription

1 Military High School AL- Ain Grade 10 &11 Biology Sample Questions Student Name: Computer #:

2 Chapter 1: Cells In all multiple choice questions, more than answer could be correct Section : 1 What Is a Cell? 01. The basic unit of all living organisms is called (nucleus/ atom/ cell). 02. What are the three basic structures in all living cells? 03. Label the following animal cell. 04. Label the following plant cell. 05. What is the main function of the cell membrane?

3 06. (Cell membrane/ Cell wall/ Nucleus/ Cytoplasm) is a thin boundary enclosing the cytoplasm that control substances that enter and leave the cell. 07. What is the main function of the cytoplasm? 08. What is an organelle? Give three examples of organelles. 09. What are the main functions of the nucleus? 10. Which of the following is/are NOT a function of a nucleus? [-A-] protect the cell [-B-] site of cell s reactions [-C-] carry hereditary information [-D-] control cell division [-E-] A & B 11. (Starch grain/ Vacuole/ Mitochondria/ Nucleus) in a living cell produces energy from food substances. 12. Mitochondria are found in larger quantity in :- [-A-] skin [-B-] cheek cells [-C-] liver cells [-D-] muscle cells 13. What is the main function of the ribosomes? 14. What types of cells contain chloroplasts?

4 15. What is the function of chloroplasts? 16. (Mitochondria/ Ribosome/ Chloroplast/ Starch grain) is present only in plant cells, and it makes glucose from carbon dioxide and water by a process called photosynthesis. Section : 2 Plant Cells Compared with Animal Cells Concept : 17. is used as a food store in plant cells. (Cell wall/ Cell membrane/ Starch grains) 18. makes plant cells firm. ( Cytoplasm / Vacuole/ Starch grains) 19. support and protect plant cell. (Cell wall/ Cell membrane/ Cytoplasm) 20. Match the following parts of a light microscope to its corresponding function: 1. Diaphragm a. is used to the specimen in focus 2. Stage b. magnify specimen 3. Course adjustment knob c. is used to observe a specimen 4. Objective lens d. control amount of light 5. Fine adjustment knob e. reflect light 6. Mirror f. hold the specimen 7. Eye piece lens g. is used to see specimen clearly 21. Label the following parts of a microscope:

5 Chapter 2: Tissues and Organs

6 01. The electron microscope uses beams of (light/ electrons/ protons) instead of beams of light. 02. What is the maximum magnification of an electron microscope? 03. The image seen under the electron microscope is (of) (lower/ higher) when compared to that of light microscope. 04. Which of the following best describes an electron microscope? Resolution Ease of use magnification A High Easy Up to 1000 times B High Difficult Up to 500,000 times C Low Difficult Up to 1500 times D Low Easy Up to 500,000 times 05. Which of the following is an image of the electron microscope? A B C 06. State two advantages of using an electron microscope. 07. State two disadvantages of using an electron microscope.

7 Section : 2 Cell Division and Cell Specialization 08. The cell starts to divide when it s (fully or completely/ partial) grown. 09. What basic structure divides first in the cell during cell division of an animal cell? 10. Arrange the stages of animal cell division in the correct order. 11. What is the result of the last stage in a cell division? 12. All the following happen during plant cell division EXCEPT which of the following? [-A-] The nucleus divides at first. [-B-] Vacuoles join to form one vacuole in one cell. [-C-] new cell wall separates the two new nuclei. [-D-] The squeezing or narrowing of the cytoplasm divides the cell into two cells. [-E-] The nucleus is not the first structure to divide. 13. (Organs/ Systems/ Tissues/ Cells/ Organisms) are groups of cells that have the same shape and function. 14. A tissue is a group of similar (organs/ systems/ tissues/ cells/ organisms) that have the same function and shape. 15. Examples of tissue include

8 16. (Organs/ Systems/ Tissues/ Cells/ Organisms) are different tissues working together to carry out special function. 17. Organs are several different (organs/ systems/ tissues/ cells/ organisms) working together to carry out special function. 18. Examples of organ include 19. Which of the following is NOT an organ? [-A-] Muscle [-B-] Brain [-C-] Stomach [-D-] Nerve [-E-] Eye 20. (Organs/ Systems/ Tissues/ Cells/ Organisms) is a group of organs whose functions are closely related. 21. A system is a group of (organs/ systems/ tissues/ cells/ organisms) whose functions are closely related. 22. The digestive system including mouth, stomach and intestine is an example of a (organ/ system/ tissue/ cell/ organism). 23. A/An (organ/ system/ tissue/ cell/ organism) is made up of different organs and systems working together to produce a complete plant or animal. Chapter 3: Chemistry for Biology Section : 1 Molecular Biology 01. The approximate size of the cell is

9 02. Atoms are made up of,, and. 03. Which of the following statements is TRUE? [-A-] Atoms contain electrons and protons only. [-B-] The nucleus of an atom contains protons and neutrons. [-C-] The nucleus of an atom contains electrons. [-D-] Electrons have a positive charge. 04. Protons have A. positive charge and is much larger and heavier than electrons. B. negative charge and is larger and heavier than the electrons C. no charge and is much smaller than the electrons D. protons positive charge and are found around the nucleus of the atom 05. Protons have: A. Positive charge B. Negative charge C. No charge D. It is impossible to predict the charge on a proton as it is inside the nucleus. 06. Electrons have: A. Positive charge B. Negative charge C. No charge D. It is impossible to predict the charge on a proton as it is inside the nucleus 07. The electrical attractions in an atom keep the (electrons/ protons/ neutrons) near the nucleus. Section : 2 Symbols and Formulae 08. Name the following symbols of atoms: H: He: C: O: N: S: Na:

10 09. 2 S represents: [-A-] An atom of sodium made up of two molecules joined together [-B-] Two separate sulphur atoms [-C-] A molecule of sulphur made up of two atoms joined together [-D-] A molecule of sodium made up of two atoms joined together [-E-] An atom of sulphur made up of two molecules joined together Section : 3 Essential Compounds in Cells and Their Properties 10. (Organic/ Inorganic) compounds are substances that contain carbon and hydrogen. 11. (Organic/ Inorganic) compounds are substances that don t contain carbon except CO Which of the following are inorganic molecules? [-A-] Fe2O3 [-C-] C2H5OH [-E-] C6H12O6 [-B-] CO2 [-D-] H2O 13. Which of the following are inorganic compounds? [-A-] Fe2O3 [-C-] NH3 [-E-] All of the above [-B-] CO2 [-D-] H2O 14. What is the general formula of amino acids? 15. There are (20/ 25/ 30) amino acids in nature. Amino acids differ from each other by their (acid/ base/ radical) group. Section : 5 Use of Equations in Biology Enzymes

11 16. Glucose + Oxygen Water + Carbon dioxide + Energy A. Circle the reactants. B. Underline the products. C. State the conditions necessary for the reaction. 17. What are the reactants in the following chemical equation? Zn + CuSO4 Zn SO4 + Cu A. Zinc and copper B. Zinc sulfate and copper C. Zinc and copper (II) sulfate D. Only zinc

12 Chapter 4 : Molecules Found in Cells Section : 1 Proteins 01. Structural proteins: [-A-] are used as tools [-B-] are used as building material [-C-] are always enzymes [-D-] control chemical reactions 02. The protein used as a chemical tool is called a (structural/ functional) protein. 03. What are the common elements in all proteins? 04. The basic units of proteins are 05. Which of the following is/are chemical structure of amino acids? 06. Proteins differ in,, and of amino acids. 07. The bond that joins one amino acid to another to form a polypeptide is called a: [-A-] A dipeptide bond [-B-] A peptide bond [-C-] A hydrogen bond [-D-] A polypeptide bond [-E-] None of the above

13 08. The shape of a protein is important because:- 1 if it is too large it won t fit inside the cell 2 if it is too long it denatures easily 3 it will take a long time for the cell to make it 4 it is important to perform its function 5 it makes it easier to leave the cell 09. Which of the following is TRUE when a protein is denatured? 1 it loses its shape 2 it loses its function 3 it should have been heated to temperature above 50oC 4 its damage is irreversible 5 it doesn t lose its function 10. A protein is denatured when it is heated to temperatures [-A-] below 30 O C [-B-] above 50 O C [-C-] below 40 O C [-D-] between 30 O C and 40 O C Section : 2 Lipids 11. Name the elements found in lipids. 12. Lipid includes the following groups of substances: 1. Fats 2. Oils 3. Peptides 4. Steroids [-A-] 1,2 only [-B-] 1,2,3 only [-C-] 1,2,4 only [-D-] 2,3,4 only 13. One molecule of a lipid is formed of (1, 2, 3) molecule of glycerol and (1, 2, 3) molecules of fatty acids.

14 14. Basic units of lipids are and. 15. Name the bond that joins a fatty acid to glycerol. 16. The diagram below represents a: [-A-] fatty acid molecule [-B-] protein molecule [-C-] glycerol molecule [-D-] lipid molecule 17. The part labeled (1) in the diagram below represents: 2 1 [-A-] lipid [-B-] fatty acid [-C-] glycerol [-D-] ester bond 18. The part labeled (2) in question (17) represents: [-A-] lipid [-B-] fatty acid [-C-] glycerol [-D-] ester bond 19. Which of the following is (are) a function(s) of a lipid? 1. Energy store 2. Insulates the body 3. Formation of cell membranes 4. Protein synthesis

15 5. all of the above Section : 3 Carbohydrates 20. Name the elements found in carbohydrates. 21. Carbohydrates are classified according to their. 1 elements they contain 2 sweetness 3 size 22. Name the bond between the two glucose molecules in maltose. 23. The bond labeled A in the diagram below is a : glucose [-A-] peptide bond [-B-] hydrogen bond [-C-] dipeptide bond [-D-] glycosidic bond A 24. is a function of carbohydrate. 1 Formation of cell membranes 2 Insulation the body 3 Being a readily source of energy 4 Protein synthesis 25. Which of the following form cell walls in plants? 1 Proteins 2 Lipids 3 Carbohydrate (Cellulose) 4 Vitamins 5 Nucleic acids

16 Section : 4 Nucleic Acids 26. The basic unit of nucleic acid is (ribose, organic base, phosphate, nucleotides). 27. Which of the following is (are) a nucleic acid (s) involved in protein synthesis? 1 RNA 2 steroids 3 carbohydrates 4 glycerol 5 DNA 28. Nucleic acids are essential for. Military High School AL- Ain

17 Grade 10 &11 Biology Sample Questions Answer key Student Name: Computer #: Chapter 1: Cells In all multiple choice questions, more than answer could be correct Section : 1 What Is a Cell? 01. The basic unit of all living organisms is called (nucleus/ atom/ cell). 02. What are the three basic structures in all living cells?

18 Cell membrane nucleus- cytoplasm 03. Label the following animal cell. 04. Label the following plant cell. 05. What is the main function of the cell membrane? Holds the cell contents and controls which substances are allowed to enter and leave the cell.

19 06. (Cell membrane/ Cell wall/ Nucleus/ Cytoplasm) is a thin boundary enclosing the cytoplasm that control substances that enter and leave the cell. 4. Know the function of the cytoplasm 07. What is the main function of the cytoplasm? Cytoplasm is the site of the cell s reaction. 08. What is an organelle? Give three examples of organelles. Organelles : are tiny sub-cellular objects which have a specific functions in the cytoplasm. Examples: mitochondria, chloroplasts, ribosomes and the nucleus (largest organelle) 09. What are the main functions of the nucleus? 1. Contains chromosomes, which carry heredity information. 2. Controls cell division 3. Controls type and quantity of proteins produced into the cytoplasm. 10. Which of the following is/are NOT a function of a nucleus? [-A-] protect the cell [-B-] site of cell s reactions [-C-] carry hereditary information [-D-] control cell division [-E-] A & B 11. (Starch grain/ Vacuole/ Mitochondria/ Nucleus) in a living cell produces energy from food substances. 12. Mitochondria are found in larger quantity in :- [-A-] skin [-B-] cheek cells [-C-] liver cells [-D-] muscle cells 13. What is the main function of the ribosomes? Synthesis of proteins. 14. What types of cells contain chloroplasts? Plant cells.

20 15. What is the function of chloroplasts? Convert the sun s energy into chemical energy used for making glucose from carbon dioxide water by photosynthesis. 16. (Mitochondria/ Ribosome/ Chloroplast/ Starch grain) is present only in plant cells, and it makes glucose from carbon dioxide and water by a process called photosynthesis. Section : 2 Plant Cells Compared with Animal Cells 17. is used as a food store in plant cells. (Cell wall/ Cell membrane/ Starch grains) 18. makes plant cells firm. ( Cytoplasm / Vacuole/ Starch grains) 19. support and protect plant cell. (Cell wall/ Cell membrane/ Cytoplasm) 20. Match the following parts of a light microscope to its corresponding function: 1. Diaphragm (d) a. is used to the specimen in focus 2. Stage (f) b. magnify specimen 3. Course adjustment knob (a) c. is used to observe a specimen 4. Objective lens (b) d. control amount of light 5. Fine adjustment knob (g) e. reflect light 6. Mirror (e) f. hold the specimen 7. Eye piece lens (c) g. is used to see specimen clearly 21. Label the following parts of a microscope:

21

22 Chapter 2: Tissues and Organs Section : 1 The Electron Microscope Compared to Light Microscope Concept : 01. The electron microscope uses beams of (light/ electrons/ protons) instead of beams of light. 02. What is the maximum magnification of an electron microscope? Up to x 500, The image seen under the electron microscope is (of) (lower/ higher) when compared to that of light microscope. 04. Which of the following best describes an electron microscope? Resolution Ease of use magnification A High Easy Up to 1000 times B High Difficult Up to 500,000 times C Low Difficult Up to 1500 times D Low Easy Up to 500,000 times 05. Which of the following is an image of the electron microscope? A B C

23 06. State two advantages of using an electron microscope. 1. Very high magnification 2. Very high resolution 07. State two disadvantages of using an electron microscope. 1. Cells are killed and dehydrated 2. Some preparation treatments produce artificial artifacts 3. Very expensive 4. Requires specialist training Section : 2 Cell Division and Cell Specialization 08. The cell starts to divide when it s (fully or completely/ partial) grown. 09. What basic structure divides first in the cell during cell division of an animal cell? The nucleus 10. Arrange the stages of animal cell division in the correct order. B E D A C - F Two daughter cells are formed 11. What is the result of the last stage in a cell division? 12. All the following happen during plant cell division EXCEPT which of the following? [-A-] The nucleus divides at first. [-B-] Vacuoles join to form one vacuole in one cell. [-C-] new cell wall separates the two new nuclei. [-D-] The squeezing or narrowing of the cytoplasm divides the cell into two cells. [-E-] The nucleus is not the first structure to divide.

24 13. (Organs/ Systems/ Tissues/ Cells/ Organisms) are groups of cells that have the same shape and function. 14. A tissue is a group of similar (organs/ systems/ tissues/ cells/ organisms) that have the same function and shape. 15. Examples of tissue include Bone, nerve, or muscle in animals. tissues of the leaf, examples epidermis and palisade 16. (Organs/ Systems/ Tissues/ Cells/ Organisms) are different tissues working together to carry out special function. 17. Organs are several different (organs/ systems/ tissues/ cells/ organisms) working together to carry out special function. 18. Examples of organ include In animals: heart, lungs, intestines, brain, eyes etc. In plants: root, stem and leaves. 19. Which of the following is NOT an organ? [-A-] Muscle [-B-] Brain [-C-] Stomach [-D-] Nerve [-E-] Eye 20. (Organs/ Systems/ Tissues/ Cells/ Organisms) is a group of organs whose functions are closely related. 21. A system is a group of (organs/ systems/ tissues/ cells/ organisms) whose functions are closely related. 22. The digestive system including mouth, stomach and intestine is an example of a (organ/ system/ tissue/ cell/ organism). 23. A/An (organ/ system/ tissue/ cell/ organism) is made up of different organs and systems working together to produce a complete plant or animal.

25 Chapter 3: Chemistry for Biology Section : 1 Molecular Biology 01. The approximate size of the cell is 10 microns 02. Atoms are made up of,, neutrons electrons and. protons 04. Which of the following statements is TRUE? [-A-] Atoms contain electrons and protons only. [-B-] The nucleus of an atom contains protons and neutrons. [-C-] The nucleus of an atom contains electrons. [-D-] Electrons have a positive charge. 05. Protons have [-A-] positive charge and is much larger and heavier than electrons. [-B-] negative charge and is larger and heavier than the electrons [-C-] no charge and is much smaller than the electrons [-D- ]protons positive charge and are found around the nucleus of the atom 06. Protons have: A. Positive charge B. Negative charge C. No charge D. It is impossible to predict the charge on a proton as it is inside the nucleus. 07. Electrons have: A. Positive charge B. Negative charge C. No charge D. It is impossible to predict the charge on a proton as it is inside the nucleus 08. The electrical attractions in an atom keep the (electrons/ protons/ neutrons) near the nucleus.

26 Section : 2 Symbols and Formulae 09. Name the following symbols of atoms: Hydrogen H: He: Helium C: Carbon O: Oxygen N: Nitrogen S: Sulfur Na: Sodium S represents: [-A-] An atom of sodium made up of two molecules joined together [-B-] Two separate sulphur atoms [-C-] A molecule of sulphur made up of two atoms joined together [-D-] A molecule of sodium made up of two atoms joined together [-E-] An atom of sulphur made up of two molecules joined together Section : 3 Essential Compounds in Cells and Their Properties 11. (Organic/ Inorganic) compounds are substances that contain carbon and hydrogen. 12. (Organic/ Inorganic) compounds are substances that don t contain carbon except CO Which of the following are inorganic molecules? [-A-] Fe2O3 [-C-] C2H5OH [-E-] C6H12O6 [-B-] CO2 [-D-] H2O 14. Which of the following are inorganic compounds? [-A-] Fe2O3 [-C-] NH3 [-E-] All of the above [-B-] CO2 [-D-] H2O 15. What is the general formula of amino acids?

27 16. There are (20/ 25/ 30) amino acids in nature. Amino acids differ from each other by their (acid/ base/ radical) group Section : 5 Use of Equations in Biology Enzymes 17. Glucose + Oxygen Water + Carbon dioxide + Energy A. Circle the reactants. B. Underline the products. Enzymes C. State the conditions necessary for the reaction. 18. What are the reactants in the following chemical equation? Zn + CuSO4 Zn SO4 + Cu key A. Zinc and copper Zn: zinc B. Zinc sulfate and copper Cu: copper C. Zinc and copper (II) sulfate SO4: sulfate D. Only zinc CuSO4: copper(ii) sulfate Chapter 4 : Molecules Found in Cells Section : 1 Proteins 01. Structural proteins: [-A-] are used as tools [-B-] are used as building material [-C-] are always enzymes

28 [-D-] control chemical reactions 02. The protein used as a chemical tool is called a (structural/ functional) protein. 03. What are the common elements in all proteins? Carbon, hydrogen, oxygen and nitrogen The basic units of proteins are amino acids 05. Which of the following is/are chemical structure of amino acids? H 1 NH2 C COOH 2 R COOH R 3 R NH2 4 R CO NH Proteins differ in,, and of amino acids. 07. The bond that joins one amino acid to another to form a polypeptide is called a: [-A-] A dipeptide bond [-B-] A peptide bond [-C-] A hydrogen bond [-D-] A polypeptide bond [-E-] None of the above number type sequence 08. The shape of a protein is important because:- 1 if it is too large it won t fit inside the cell 2 if it is too long it denatures easily 3 it will take a long time for the cell to make it 4 it is important to perform its function 5 it makes it easier to leave the cell 09. Which of the following is TRUE when a protein is denatured? 1 it loses its shape 2 it loses its function 3 it should have been heated to temperature above 50oC

29 4 its damage is irreversible 5 it doesn t lose its function 10. A protein is denatured when it is heated to temperatures [-A-] below 30 O C [-B-] above 50 O C [-C-] below 40 O C [-D-] between 30 O C and 40 O C Section : 2 Lipids 11. Name the elements found in lipids. Carbon, hydrogen and oxygen 12. Lipid includes the following groups of substances: 1. Fats 2. Oils 3. Peptides 4. Steroids [-A-] 1,2 only [-B-] 1,2,3 only [-C-] 1,2,4 only [-D-] 2,3,4 only One molecule of a lipid is formed of (1, 2, 3) molecule of glycerol and (1, 2, 3) molecules of fatty acids. glycerol 14. Basic units of lipids are and. 15. Name the bond that joins a fatty acid to glycerol. fatty acids Ester bond

30 16. The diagram below represents a: [-A-] fatty acid molecule [-B-] protein molecule [-C-] glycerol molecule [-D-] lipid molecule 17. The part labeled (1) in the diagram below represents: 2 1 [-A-] lipid [-B-] fatty acid [-C-] glycerol [-D-] ester bond 18. The part labeled (2) in question (17) represents: [-A-] lipid [-B-] fatty acid [-C-] glycerol [-D-] ester bond 19. Which of the following is (are) a function(s) of a lipid? 1. Energy store 2. Insulates the body 3. Formation of cell membranes 4. Protein synthesis 5. all of the above Section : 3 Carbohydrates 20. Name the elements found in carbohydrates. Carbon, hydrogen and oxygen

31 21. Carbohydrates are classified according to their. 1 elements they contain 2 sweetness 3 size 22. Name the bond between the two glucose molecules in maltose. Glycosidic bond 23. The bond labeled A in the diagram below is a : glucose [-A-] peptide bond [-B-] hydrogen bond [-C-] dipeptide bond [-D-] glycosidic bond A 24. is a function of carbohydrate. 1 Formation of cell membranes 2 Insulation the body 3 Being a readily source of energy 4 Protein synthesis 25. Which of the following form cell walls in plants? 1 Proteins 2 Lipids 3 Carbohydrate (Cellulose) 4 Vitamins 5 Nucleic acids Section : 4 Nucleic Acids 26. The basic unit of nucleic acid is (ribose, organic base, phosphate, nucleotides).

32 27. Which of the following is (are) a nucleic acid (s) involved in protein synthesis? 1 RNA 2 steroids 3 carbohydrates 4 glycerol 5 DNA 28. Nucleic acids are essential for. protein synthesis