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- 1. Multiple Choice
These diagrams demonstrate how cells can be differentiated by their...modes of locomotionmeans of replicationsizes and densitiescell structures - 2. Multiple ChoiceHow does the size of a eukaryotic organism normally compare to the size of a prokaryotic organism?eukaryotes are normally much smaller than prokaryoteseukaryotes and prokaryotes are both normally very small organimseukaryotes and prokaryotes are both very large organismseukaryotes are much larger than prokaryotes
- 3. Multiple ChoiceThe life forms exhibiting the simplest cellular structure are_____.organellesproteinsprokaryoteseukaryotes
- 4. Multiple ChoiceWhich of the following is true about cells?neither prokaryotes nor eukaryotes ever contain both a true nucleus that is well-defined and organelles that are separated from the cytoplasm by membranesGenerally, prokaryotes do not have a true nucleus or membrane-bound organelles and eukaryotes contain both a nucleus and membrane-bound organellesBoth eukaryotes and prokaryotes contain a true nucleus that is well-defined and organelles that are membrane-boundGenerally, eukaryotes do not have a true nucleus or membrane-bound organelles and prokaryotes contain both a nucleus and membrane-bound organelles.
- 5. Multiple ChoiceJohn is examining cells under the microscope. She is using the 40x objective lens to view the slide with a 10x eyepiece. What is the total magnification she is using to view the cells?10x40x100x400x
- 6. Multiple ChoiceSometimes samples can be placed directly under a microscope. At other times, it is necessary to add water to the slide and make a wet mount.
For a wet mount, the steps are shown below. In what order should these steps be followed?
1. If necessary, remove excess water by holding a paper towel next to coverslip.
2. Use eyedropper to place a drop of water on the sample.
3. Place a sample on the slide.
4. Place a coverslip on the slide.2-3-1-41-2-3-44-3-2-13-2-4-1 - 7. Multiple ChoiceMany protozoa have tiny hair-like structures that beat back and forth to aid a protozoan's movement. What are these hair-like structures called?pseudopodsciliaflagellahydrophilic hairs
- 8. Multiple ChoiceSome prokaryotes and eukaryotes have a cellular structure called a flagella. What is the purpose of the flagella?to transport molecules across the cell membraneto propel the cell through liquidto collect food for the cellto tell the cell the direction of a food source
- 9. Multiple ChoiceWhat cell part does an amoeba use for locomotion and for capturing prey?pseudopodendoplasmvacuolelysosome
- 10. Multiple ChoiceA bacterial cell is in a solution with a chemical gradient. The bacterial cell directs its movements in order to move toward the highest concentration of glucose molecules within the solution. This is an example of positive _________.hydrotropismhomeostasischemotaxisphototaxis
- 11. Multiple ChoiceHow does DNA in prokaryotic cells differ from the DNA in eukaryotes?
I. Prokaryotic DNA contains uracil instead of thymine.
II. Prokaryotic DNA is not separated from the rest of the cell by a nuclear membrane.
III. Prokaryotic DNA is not packaged into chromosomes.
IV. Prokaryotic DNA cannot be replicated.I and II onlyI, II, and III onlyIII and IV onlyII and III only - 12. Multiple ChoiceProkaryotic cells do not have a nucleus, mitochondria, or other membrane-bound organelles, but they can possess...ribosomescytoplasmcell membraneall of these
- 13. Multiple ChoiceWhat type of cell is this?plantanimalprokaryoticprotist
- 14. Multiple ChoiceWhat is the purpose of the part labeled with number 3?makes large adjustments when focusing specimens by moving the stage up or downmakes minor adjustments when focusing specimens by moving the stage up or downchanges the magnification of the specimenssite where slides or specimens are placed
- 15. Multiple ChoiceBoth eukaryotes and prokaryotes possess DNA and engage in genetic processes. Which of the following is true of their cellular genetics?eukaryotic and eukaryotic DNA use different genetic codes (nucleotides)eukaryotic DNA is linear where most prokaryotic DNA is circulareukaryotic cells generally require fewer genes to operate than prokaryotic cellsprokaryotic DNA cannot be translated into proteins because of the lack of a nucleus
- 16. Multiple ChoiceWhich of the following is true of prokaryotic cells?They contain nuclei and other membrane-bound organellesThey function as individual organismsThey may be found in unicellular or multicellular organismsThey tend to be large and complex in comparison to eukaryotic cells
- 17. Multiple ChoiceProkaryotic and eukaryotic cells have many differences, but they also share some common features. Which of the following may be found in either type of cell?Golgi bodiesribosomesmitochondrianuclei
- 18. Multiple ChoiceScientists often use cellular evidence in order to classify or group organisms. Which of the following is the best way to distinguish very simple organisms, such as bacteria, from more complex organisms, such as protists, plants, and animals?by cell type, such as prokaryotic vs. eukaryoticby cell number, such as unicellular vs multicellularby type of cellular reproduction, such as mitosis vs. meiosisby mode of nutrition, such as autotrophic vs. heterotrophic
- 19. Multiple ChoiceSome of the characteristics that help classify the Euglena as a protist are labeled in the picture. Analyzing the picture, this organism is...prokaryoticeukaryoticmulticellularnone of these
- 20. Multiple ChoiceWhich of the following can be found in both prokaryotic and eukaryotic cells?
I. DNA
II. mitochondria
III. ribosomes
IV. RNA
V. nucleus
VI. vacuolesI and IV onlyIII, IV, and V onlyI, III, and IV onlyI, II, and III only - 21. Multiple ChoiceHow would the same cells look if they were viewed using a light microscope?the light microscope would show the individual atoms that make up the cellsthe light microscope would show a three dimensional image of the cellsthe light microscope would show less details of the cells' structureThe light microscope would show more details of the cells' structure
- 22. Multiple ChoiceThe reddish spot on the right side of the euglena is an eyespot. What is the function of the eyespot?it detects light, which allows the euglena to obtain energy and make foodit detects movement, which allows the euglena to safely hide from preditorsit detects light, which allows the euglena to stay out of bright sunlightit detects movement, which allows the euglena to easily find prey species
- 23. Multiple ChoiceWhich of the following best explains the function of a contractile vacuole?transports water necessary for the process of photosynthesismaintains homeostasis by regulating an organism's water contentmaintains homeostasis by regulating an organism's internal temperaturetransports nutrients necessary for the process of cellular respiration
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