Possible Grade 11 Biology Questions Cell Which organelle viewed using the electron microscope, appears to be a collection of fine granules and tiny fibers? a) mitochondrion b) ER c) chloroplast d) nucleolus e) Golgi Which of the following is the primary role of the lysosome? a) ATP synthesis b) Intracellular digestion c) Lipid transport d) Carbohydrate storage e) Protein synthesis If plant cells are immersed in distilled water, the resulting movement of water into the cells is called a) conduction b) active transport c) transpiration d) osmosis e) facilitated diffusion All the following cell components are found in prokaryotic cells EXCEPT a) DNA b) ribosomes c) cell membrane d) nuclear envelope e) enzymes Structures found in the cells of both plants and animals are a) cell walls and cell membranes b) centrioles and lysosomes c) chloroplast and ribosomes d) cell membranes and chromosomes e) contractile vacuoles and leucoplasts A plant cell is placed in a hypertonic solution. Describe and explain what happens to this plant cell. State the cell theory. As cells within an organism become specialized, they become dependant on each other. Why? Photosynthesis and cellular respiration are two processes that are extremely important to the carbon cycle. State the general chemical equation for each process. Cellular respiration provides energy for cells. How do the raw materials necessary for cellular respiration reach the cells of a complex multi- celled organism? With the aid of a diagram, describe the Lytic Cycle. Circulation Answer the following with the aid of a diagram or concept map. a) Describe how blood travels within the heart. Refer to the diagram below. Make sure to refer to specific blood vessels. b) Why should a person exercise regularly? . Describe one mechanism the body uses to get blood back to the heart. 2. Describe how blood travels in the heart. A properly labelled diagram would help. Classification An animal that can be divided into equal halves by passing a plane through the central axis of that animal, in any direction, has this type of symmetry: a) spherical b) radial c) bilateral d) asymmetry In Linnaeus' system of naming, organisms are identified by two names, the first name given is: a) species b) genus c) kingdom d) phylum Kingdom whose members are eukaryotic, heterotrophic, and non?mobile: a) Fungi b) Protista c) Monera d) Animalia Humans belong to this Order: a) Primates b) Hominidae c) Mammalia d) Chordata Phylum to which crayfish belong: a) Metazoa b) Annelida c) Cnidaria d) Anthropoda Taxon between Class and Family: a) Order b) Phylum c) Genus d) Division An organism that is eukaryotic, multicellular, heterotrophic, and lacks cell walls belongs to which of the following? a) Monera b) Protista c) Fungi d) Plantae e) Animalia An animal that can be divided into equal halves by passing a plane through the central axis of that animal, in any direction, has this type of symmetry: a) spherical b) radial c) bilateral d.) asymmetry Short Answer. Answer each of the following in detail. List three ways in which organisms are classified: a) Trace the development of our classification system from earliest times. b) Why are Latin and Greek names used? Digestion What is the importance of mechanical food breakdown? Describe the digestion of an earthworm. Include a labelled diagram. a) Using a properly labelled concept map, describe the human digestive system. b) Why aren=t stomachs harmed by the acids necessary for digestion, or are they? Early S.L. Miller=s classic experiment demonstrated that a discharge of sparks through a mixture of gases could result in the formation of a large variety of organic compounds. All of the following gases were used in this experiment EXCEPT a) hydrogen b) methane c) ammonia d) oxygen e) water vapour A particular species of plant grows best when it is watered with a solution that contains an unknown amount of salt. a) Briefly design an experiment, stating three experimental groups and one control group, to determine a concentration of salt solution that is best. b) State the dependent and independent variables. c) State four variables that must remain constant. d) How is the solution that works best determined? Earthworm An earthworm=s digestive system consists mainly of a ______ extending from mouth to anus. The earthworm is hermaphroditic, meaning that ___________________________. Calciferous glands serve to rid the earthworm of both calcium and ______________. Explain how the process of respiration differs in the crayfish and earthworm. Describe the digestive system of the earthworm?. Are earthworms beneficial? Why, or why not? What is a major difference between the circulation system in the crayfish and an earthworm? Ecology All of the following statements about the diagram are correct EXCEPT: a) The grasshopper is an herbivore. b) Only two trophic levels are depicted c) The mouse and grasshopper are at the same trophic level. d) The grass is a producer. e) All of the organisms except grass are consumers, regardless of position. The organic and inorganic materials in all the organisms in the diagram will eventually return to the environment by the action of: a) decomposers b) producers c) primary consumers d) secondary consumers e) carnivores Using an example for each, discuss the following ecological concepts: a) Succession b) Energy flow between trophic levels c) Limiting factors d) Carrying capacity Which of the following organisms is most likely to be located at the top of the pyramid of biomass? a) grass b) grasshopper c) snake d) mouse e) hawk In the nitrogen cycle, the transformation of gaseous nitrogen into nitrogen-containing compounds is performed primarily by a) fungi b) bacteria c) green plants d) herbivores e) carnivores During the carbon cycle, which of the following carbon compounds would be utilized as an energy source by heterotrophs? a) calcium carbonate b) carbonic acid c) organic molecules d) carbon dioxide e) carbon monoxide Which of the following is true about secondary consumers in an ecosystem? a) They eat only plants. b) They are eaten by primary consumers. c) They are smaller and weaker than are primary consumers. d) They are fewer in number than are primary consumers. e) They contain the greatest total biomass in the system. The first organisms were: a) aerobic autotrophs b) aerobic heterotrophs c) anaerobic autotrophs d) anaerobic heterotrophs State five characteristics of living organisms.. Make a brief statement on how each characteristic applies to you. What is meant by the term concept map? Apply these concepts to the following concept map. predation water ecosystem interspecific abiotic forms interactions symbiosis light biotic forms commensalism competition intra specific Describe the processes of ammonification, nitrification and assimilation that allow nitrogen to be recycled from organic to inorganic forms. State four ways in which nitrogen contained within the soil can be lost from the nitrogen cycle. Briefly describe how nitrogen is returned to the nitrogen cycle. Define succession. In general, what two types of factors change during succession. Describe, in general, the history 'of a community as it has evolved from bare rock to its second climax. Describe some environmental concerns in Cape Breton and outline possible solutions. Embryology Hollow mass of cells in the early development of an animal : a) zygote b) cleavage c) blastula d) grastula Evolution Process in which species that are not closely related evolve similar structures : a) divergent evolution b) convergent evolution c) speciation d) adaptive radiation Cro?Magnon belonged to this species: a) A. africans b) H. erectus c) H. sapiens d) H. kabilis Using one species of plant that has two types of flower colour and two different species of butterflies: Create a scenario in which a variation becomes an adaptation. Excretion Describe the structure and function of the organs involved in human excretion. The _________ is the tube leaving the bladder. The liver converts toxic ammonia to _________. The presence of glucose in the urine is a sign that __________________. Dialysis is a treatment used to ___________________________. Describe the role of the hypothalamus in controlling the amount of water in urine. Micro-organisms Using a properly labelled diagram, describe the process of conjugation for paramecium. Describe the six aspects of Darwin's Theory of Natural Selection and apply it to bacteria's resistance to antibiotics. In what way is the euglena more adaptive to its environment then the paramecium? Using the paramecium, sponge, and crayfish for reference, describe the evolution of respiration. Why are a German Shepard and a poodle grouped within the same species? Using a diagram of a fish, show the locations of the five terms that help describe body positions related to bilateral symmetry. Paramecium has a problem with water build up within the cell. a) Explain why water enters the cell? b) Explain how a paramecium copes with this problem? How does the paramecium maintain proper internal balance with its environment? Draw and properly label any one of the micro-organisms you have studied this year. Describe the functions of five of the parts labelled in the above question. Population All of the following are density-dependent factors that limit animal populations EXCEPT a) weather b) predation c) birthrate d) food competition e) mortality The following data describes the growth of a bacterial colony over a period of time. Time(hours) Number of bacteria 0 0 1 4 2 6 a) Graph a representative diagram of this data. 3 16 (Label both axis on this graph) 4 32 5 64 b) The favourable survival temperature for this 6 128 particular species of bacteria is between 7 250 28?36 degrees Celsius. The favourable 8 256 reproducing temperature is between 9 252 32?34 degrees Celsius. 10 258 Describe the growth of the bacterial colony 11 280 and the temperature conditions during each 12 420 of the following time periods: 13 600 a) 17?20 hrs. 14 925 b) 7?10 hrs. 15 945 c) 0?2 hrs. 16 948 d) 11?15 hrs. 17 952 18 500 19 100 20 0 A cosmetic company runs its own lab to carry out research specifically on its products. A recent experiment was done to see whether using mascara (a cosmetic applied to the eyelashes) would increase the incidence of eye infections. A sterile swab was smeared across the eyelid and then placed in the mascara. The bacteria populations were sampled every day for one week and the following results obtained: DAY NUMBER OF BACTERIA 1 2000 2 6000 3 10000 4 32000 5 40000 6 20000 7 12000 a) Using the data from the table above, draw a graph to show the growth of the bacteria. Plot the days on the horizontal axis and the numbers on vertical axis. b) Examine your graph carefully. Generally describe the growth pattern of the bacteria. Give reasons for your answer. c) Based on the results shown, what can you conclude from this experiment? Give reasons for your answer. d) Draw and label a bacterium. e) In what ways can bacteria be helpful? Respiration Using a concept map, describe the process of respiration in the human. Why can=t you hold our breath for very long? When the alveoli are filled with fresh air, oxygen diffuses into the _______________. Carbon dioxide and water are produced as a result of the process called ______________. Most of the carbon dioxide produced by metabolism combines with water to form ________. The large muscle separating the lungs from the abdominal cavity is ____________. Lungs expand because ____________________________. Air enters through tiny openings called __________ before entering the tracheae of an insect. Why can=t you hold your breath for very long? When the alveoli are filled with fresh air, oxygen diffuses into the _______________. Carbon dioxide and water are produced as a result of the process called ______________. Most of the carbon dioxide produced by metabolism combines with water to form ________. Plants do not require specialized gas transport systems because _______________________. Describe the structure and function of the organs involved in human respiration. Viruses Why are viruses hard to classify? Many viruses replicate by way of the lytic cycle. Show your knowledge of this cycle by drawing, labelling, and explaining the lytic cycle of the bacteriophage. Why is this cycle called Alytic@? Draw and label a bacteriophage. Are viruses considered Aliving@ or Anon-living@? Discuss your answer.