2. Cell surface proteins or receptors, that help cells communicate, are embedded within the cell membrane s phospholipid bilayer.
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1 UNIT 3 TEST BIOLOGY: 1.1.1, 1.1.2, Cells, Cell Structures, Prokaryotic vs Eukaryotic, Bacteria & Protists, Microscopes, Cell Communication, & Stem Cells True/False Indicate whether the statement is (A) TRUE or (B) FALSE. 1. Robert Hooke observed cork cells under a microscope. 2. Cell surface proteins or receptors, that help cells communicate, are embedded within the cell membrane s phospholipid bilayer. 3. Bacteria are incapable of movement or locomoton by themselves; they can only get to new locations by growing toward them or by forming endospores and being carried in air or water. (Hint: Think about the bacteria cell you colored and the different structures it had!) 4. Some protists are bad and can cause disease or death, ex: amoebic dysentery, malaria, giardiasis, and sleeping sickness. Multiple Choice Identify the choice that best completes the statement or answers the question. 5. The smallest units of life in all living things are a. cells. c. cytoplasm. b. mitochondria. d. Golgi apparatus. 6. Surface area is an important factor in limiting cell growth because a. the cell can burst if the membrane becomes too large. b. materials cannot enter the cell if it is too large. c. the cell may become too large to take in enough food and to remove enough wastes. d. waste products cannot leave the cell if it is too small. 7. The size to which a cell can grow is limited by its a. location. c. function. b. structure. d. surface area. 8. One difference between prokaryotes and eukaryotes is that a. nucleic acids are found only in prokaryotes. b. mitochondria are found in larger quantities in eukaryotes. c. Golgi vesicles are found only in prokaryotes. d. prokaryotes have no nuclear membrane. 9. Which of the following is characteristic of prokaryotes? a. They have a nucleus. b. They were found on Earth before eukaryotes. c. The organelles in their cytoplasm are surrounded by membranes. d. None of the above 10. Only eukaryotic cells have a. DNA. c. ribosomes. b. membrane-bound organelles. d. cytoplasm.
2 11. Studying a picture of a cell taken with an electron microscope, you find that the cell has no nucleus and no mitochondria, but it does have a cell membrane and a cell wall. You conclude that the cell is probably from a(n) a. animal. c. prokaryote. b. plant. d. now extinct organism. 12. The cell membrane a. encloses the contents of a cell. b. allows material to enter and leave the cell. c. is selectively permeable. 13. Golgi body/apparatus are organelles that a. receive proteins and lipids from the endoplasmic reticulum. b. label the molecules made in the endoplasmic reticulum with tags that specify their destination. c. release molecules in vesicles. 14. The packaging and distribution center of the cell is the (hint: Post Office) a. nucleus. c. central vacuole. b. Golgi body/apparatus. d. nuclear envelope. 15. Refer to the illustration above. Which structure immediately identifies this cell as a eukaryote? a. structure 1 c. structure 3 b. structure 2 d. structure Refer to the illustration above. The cell uses structure 3 a. to transport material from one part of the cell to the other. b. to package proteins so they can be stored by the cell. c. as a receptor. d. to produce energy. 17. Refer to the illustration above. Structure 1 is a. the endoplasmic reticulum. c. a mitochondrion. b. a Golgi apparatus. d. the nucleus.
3 18. All the following are found in both plant and animal cells, except a. a cell wall. c. mitochondria. b. a cell membrane. d. the endoplasmic reticulum. 19. The organelles associated with photosynthesis are the a. mitochondria. c. Golgi apparatus. b. chloroplasts. d. vacuoles. 20. The organelles in plant cells that contain a green pigment are the a. mitochondria. c. chloroplasts. b. bilayer lipids. d. Golgi apparatus. 21. Plant cells have large membrane-bound spaces in which water, waste products, and nutrients are stored. These places are known as a. mitochondria. c. Golgi apparatus. b. chloroplasts. d. vacuoles. 22. Which of the following pairs contains unrelated items? a. eukaryote amoeba c. cell wall animal cell b. ribosomes protein d. mitochondria energy 23. Plant cells a. do not contain mitochondria. b. have a cell wall instead of a cell membrane. c. have a large vacuole instead of a Golgi apparatus. d. have chloroplasts and a cell wall. 24. Which of the following is the correct order of organization of structures in living things, from simplest to most complex? a. organ systems, organs, tissues, cells b. tissues, cells, organs, organ systems c. cells, tissues, organ systems, organs d. cells, tissues, organs, organ systems 25. The earliest known group of living organisms on Earth was a. viruses. c. bacteria. b. fungi. d. protists. 26. Bacteria lack a true nucleus and membrane-bound organelles; therefore, they are classified as a. prokaryotes. c. anaerobes. b. aerobes. d. eukaryotes. 27. Which of the following are used by at least some bacteria for movement? a. pili c. cytoplasmic projections b. flagella 28. Antibiotics a. include penicillin, tetracycline, and streptomycin. b. may prevent bacteria from making new cell walls. c. are very effective treatments for bacterial diseases.
4 29. Pseudopodia are used for a. Paramecium conjugation. c. Euglena reproduction. b. movement by amoebas. d. Paramecium mitosis. 30. A resistant structure formed by some protozoa that enables them to survive harsh environmental conditions is a(n). (Ex: The Brain-Eating Amoeba uses one to protect itself from our body s immune system!) a. eyespot. c. food vacuole. b. cyst. d. pseudopod. 31. Refer to the PARAMECIUM illustration above. Which LETTER indicates the location of the CONTRACTILE VACUOLE. An organelle that opens and shuts to release excess water and waste from within the organism. a. A. c. C. b. B. d. E. 32. The Euglena has an eyespot to detect light and chloroplast to convert light into energy (glucose), but also contains mitochondria to transform glucose to ATP energy; therefore, the Euglena is an example of a protist that a. is both autotrophic and heterotrophic. c. is always autotrophic. b. is only a parasitic heterotroph. d. swims away from light. 33. Using a microscope, this objective provides the GREATEST FIELD of VIEW, but the LEAST DETAIL... a. High Power Objective c. I Objective b. Medium Power Objective d. Low Power Objective 34. Using a microscope, this objective provides the SMALLEST FIELD of VIEW, but the GREATEST DETAIL... a. High Power Objective c. I Objective b. Medium Power Objective d. Low Power Objective 35. When viewing a specimen under a microscope this adjustment / knob should NEVER be used when the HIGH POWER OBJECTIVE is in place... a. Fine Adjustment c. Coarse Adjustment b. Medium Adjustment d. Chiropractic Adjustment
5 36. Calculate the Total Magnification of a viewed specimen if the Ocular Lens is 10x and the Objective Magnification is 50x... a. 5x c. 50x b. 500x d. 2x 37. Scientists, like Dr. Anthony Atala of Wake Forest Baptist Medical, are particularly interested in unspecialized cells that develop into many different cell types in the body during early life and growth. What are these cells known as... a. differentiated cells c. root cells b. specialized cells d. stem cells 38. Because stem cells have no instructions or specific function within the body, they are considered. Thus they are highly sought after for programming to help cure diseases or grow/print personalized replacement organs. a. specialized c. differentiated b. undifferentiated d. fancy 39. Cells must communicate with each other in order for our bodies to function properly and respond to stimuli. Protein molecules found embedded within the cell membrane surface that help receive chemical signals from outside the cell are known as... a. mail men c. protists b. receptors d. lipids 40. These chemical proteins are secreted by the glands and travel via the bloodstream. They aid in coordinating many processes within the body and regulating the functions of organs and cells. They are key players in cell communication, and are raging during your teenage years. a. steroids c. hormones b. glycogen d. insulin
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