Cells & Systems Review #1 - ANSWER KEY PDF
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This document is a review sheet with questions and answers, potentially for a cells and systems review. It covers topics about cell parts and their functions. It appears to be for secondary school or high school students.
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Name: ____________________ Class: __________ Date: ____________________ Cells & Systems - Review #1 - ANSWER KEY 1. Match the following vocabulary words with the correct definitions. Letter Word...
Name: ____________________ Class: __________ Date: ____________________ Cells & Systems - Review #1 - ANSWER KEY 1. Match the following vocabulary words with the correct definitions. Letter Word Definition E Field of view A. organism composed of only one cell B magnification B. the amount that an image appears to be enlarged C multicellular C. organism made of many specialized cells working together A unicellular D. allows some substances through H osmosis E. the area in a microscope you can see D semipermeable F. a cell that has differentiated and has a design related to its function F Cell specialization G. a reaction to something (such as pulling your hand away from heat) G response H. diffusion of water across a semipermeable membrane I stimuli I. an event that produces a response in living tissue 2. On the blanks to the left of each statement, write the characteristic of life referred to in the statement. (hint: GRAPE-C). Need energy A tomato plant requires sunlight in order to survive Growth A bean seed develops into a bean plant Reproduction A bean plant produces a bean seed Produces waste A person breathes out carbon dioxide Adapt and respond A green plant grows in the direction of sunlight Adapt and respond You become thirsty after exercise Need energy A caterpillar eats the leaves of a plant Made of cells A rabbit is multicellular 3. What is the correct order when making a wet mount slide of a layer of cells? Place a number (1 being the first step and so on) above each statement in the correct order. 3 1 2 4 Add a drop of water or Take a thin layer of cells Lay them on the slide, Gently lower the stain make sure it lies flat coverslip 1 4. Label the parts of the microscope. Letter Part Letter Part A Eyepiece G Base B Nosepiece H Diaphragm C Objective lens I Fine adjustment knob D Stage clips J Coarse adjustment knob E Stage K Arm F Light source 5. When you switch from low power to high power on a microscope, what happens to the… a. Magnification (detail you can see)? increases b. Field of view (area you can see)? decreases c State the diameter of the field of view in millimeters 1.5 mm State the diameter of the field of view in micrometers. d. 1500 um If the eyepiece magnifies an image 10 times and the high power objective e. 400 times magnifies 40 times, what is the total magnification? 6. Identify the microscope part described: a. Coarse focus Used to focus the image on low power b. Revolving nosepiece Used to change the magnification (eg. from low to medium power) c. eyepiece The part you look through; usually magnifies the image by 10 X. d. stage Where you place the slide for viewing e. Arm and base The two parts you carry the microscope with f. diaphragm Round disc that changes the amount of light to the slide 2 7. Cell theory is a collection of assumptions about the cells of all living things. Which of the following is not part of the cell theory? a. The cells of all living things come from other cells b. The cell is the smallest part of an organism that can carry out the activities of a living D thing. c. An organism can be as simple as a single cell, or can be made up of trillions of cells. d. Every cell works alongside other cells to form more complicated structures. 8. Briefly state the function of each organelle, then put a check in the appropriate column(s) to indicate whether the following organelles are found in plant cells, animal cells or both. Organelle Function Plant Cell Animal Cell Nucleus brain ✔ ✔ Cell wall Rigid support ✔ Cell membrane gatekeeper ✔ ✔ Chloroplast Converts energy to food ✔ Cytoplasm Holds everything in place ✔ ✔ Mitochondria Converts food to energy ✔ ✔ Vacuole storage ✔ ✔ 9. Match the numbers in the diagram to the structures Nucleus 2 below. Cell membrane 3 Vacuole 6 Cell wall 5 Chloroplast 7 Mitochondria 4 Cytoplasm 1 10. a. Muscle cells use lots of energy to move the body. Which organelle Mitochondria below would you expect to find lots of in muscle cells? b. Root cells in plants cannot capture sunlight for photosynthesis. What chloroplast organelle, usually found in plant cells, would NOT be in root cells? 3 11.The cell and its organelles can be compared to a city,as in the illustration below. Identify the organelle most similar in function to the city components listed below. Cell Part City Part (and number) nucleus City hall (6) vacuole Storage tanks (7) Cell membrane City Gates (8) chloroplast Power plant (3) mitochondria Food processing plant (4) 12.Complete the table below to identify the flow of water into and out of the cell in each picture. Visual What direction will the water flow (into the cell/ out of the cell/ Out of the cell neither Into the cell neither)? Higher water Higher water Equal water How do you know? concentration inside the concentration concentrations cell outside the cell Will the cell shrink, expand or shrink same expand stay the same? 4 13.The shells of some raw eggs are removed and the mass of the eggs are measured. One egg is placed in a tap water solution while the other is placed in a sugar solution. After 24 hours the eggs are removed from their soaking solution and their mass is measured again. What was the manipulated variable in this Type of soaking solution a. experiment? b. What was the responding variable? Change in mass after soaking 24 hours Based on osmosis, what would you predict It would shrink c. would happen to the egg placed in sugar solution? Based on osmosis, explain why the egg in the There was more water concentration outside d. tap water increased in mass the cell so the water came into the cell. e. What kind of membrane does the egg have? semipermeable 14.List the levels of organization in the cell from smallest to largest. (include the cell, organ, organ system, organism and tissue) Cell → tissue → organ → organ system → organism 15.Match the following vocabulary words with the correct definitions. Letter Word Definition B organelles A. several organs working together to perform a function in your body E cell B. parts of a cell such as the nucleus D tissue C. a living thing that may be unicellular or multicellular F organ D. group of similar cells working together A system E. smallest level at which life exists C organism F. a group of different tissues working together like the heart or lungs 5 16.Check off which type of cell is represented by the image or the description. A cell can be checked off more than once. Epithelial Function/Visual Nerve Cell Muscle Cell Blood Cell Bone cell (skin) cell ✔ Protect body from foreign ✔ invaders Protects the outside of the body and also covers ✔ internal structures ✔ Send and receive messages ✔ ✔ Moves parts of the body ✔ Provides rigid structure and support for the rest of the ✔ body 17.Alex measured the rate of heartbeat and breathing of Simon while Simon was exercising. The results are shown in the graph below. What trend do you see? a. As his rate of heartbeat increases, his breathing rate also increases b. As his rate of heartbeat decreases, his breathing rate also increases A c. As his rate of heartbeat increases, his breathing rate also decreases d. As his rate of heartbeat decreases, his breathing rate also decrease 6
