Unit 2: Organisms and Envrionments Exam Review
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1 6.12A: Living Organisms and Cells Unit 2: Organisms and Envrionments Exam Review All living things are made of. Cells are the of living things they are the smallest part of an organism. Some organisms are - they are made of only cell. o Example: Some organisms are - they are made of than one cell. o Example: 6.12B: Prokaryotic vs. Eukaryotic All cells can be classified as either or. Prokaryotic {List at least 3 characteristics about prokaryotic cells} Eukaryotic {List at least 3 characteristics about eukaryotic cells} What is the main difference between a prokaryotic cell and a eukaryotic cell? 6.12C: Domains Biological taxonomy is the of life into. All organisms are grouped based on their. What are the three Domains and what kind of cells do they have? The broadest category organisms are classified into is known as After Domains, the next category is known as Organisms are placed into a Domain based on the presence or absence of a
2 6.12D: Kingdoms Define the following basic characteristics of organisms. Prokaryotic Eukaryotic Unicellular Multicellular Autotroph Heterotroph Asexual Reproduction Sexual Reproduction Fill in the table below about the six recognized Kingdoms. Include the basic characteristics that classify cells into those Kingdoms. Bacteria Archaea Protista Fungi Plantae Animalia 6.12E: Biotic vs. Abiotic Factors Biotic Factors: The factors are the components of an ecosystem. o This also includes the the living organisms play within the ecosystem. List some biotic factors that might be found in an ecosystem? Abiotic Factors: The factors are the components of an ecosystem. o These factors affect living organisms and their ability to and. List some abiotic factors that might be found in an ecosystem?
3 6.12F: Levels of Organization List the levels of organization of ecosystems from least complex to most complex. Give an example of an organism: Give an example of a population: Give an example of a community: Give an example of an ecosystem: Practice Questions 1. All leopard frogs in a pond make up the pond s leopard frog: a. Population b. Niche c. Community d. Ecosystem 4. Create a diagram showing the levels of organization in an ecosystem. 2. Which of the following would be distributed throughout a prokaryotic cell, but be found restricted to the nucleus of a eukaryotic cell? a. Ribosomes b. DNA c. Cell Membrane d. Chloroplasts 3. You are asked to classify an organism that is unicellular, makes its own food, reproduces asexually, and has membrane-bound cell structures. In which Domain and Kingdom would you place this organism? Explain. 5. An organelle that eukaryotes have, but prokaryotes do not have is a a. Cell membrane b. Nucleus c. Cytoplasm d. Ribosome 6. An ecosystem is made up of: a. Biotic things only b. Physical environment only c. Biotic things and the abiotic parts d. Biotic things and decaying matter
4 7. Which of the following characteristics can be used to classify an organism into a taxonomic domain? a. Being Unicellular or multicellular b. Mode of reproduction c. Being heterotrophic or autotrophic d. Presence of a nucleus in cells 11. Distinguish between the terms autotroph and heterotroph. 8. An organism called Euglena is represented in the diagram. The Euglena can be classified as eukaryotic due to the presence of which labeled part? 12. A macaw is a type of parrot with colorful feathers that flies about in the upper canopy of trees in tropical rainforests. Macaws have a diet which includes fruits, leaves, nuts, and seeds of plants. Which of the following describes a biotic factor of the Macaw s habitat that provides a survival advantage for these birds? a. The colorful feathers are lost and regrow each year. b. Some rainforest predators are able to climb trees. c. Trees provide shelter and abundant food supplies. d. During some periods, rain falls nearly every day. 13. Identify the broadest taxonomic classification of living organisms. Name the groupings within this taxonomic classification. a. Part A, which allows the cell to turn sunlight into food. b. Part B, which allows the cell to move itself from place to place. c. Part C, which is centrally located and stores genetic material. d. Part D, which allows the organism to store water. 9. Define biotic in your own words. 10. Of the characteristic comparisons in the list below, which option is one of those used for classifying an organism into a taxonomic Kingdom? a. Internal skeleton/exoskeleton b. Multicellular/Unicellular c. Broad leaves/narrow leaves d. Has nucleus/does not have nucleus 14. A chimpanzee and a pine tree have very little in common. However, because they are both living things, we can be certain that they both a. Are made of one or more cells. b. Use sunlight to make their own food. c. Travel with other members of their species. d. Have a skeleton which allows them to move.
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