1. The electron microscope has been particularly useful in studying prokaryotes, because electrons can penetrate tough prokaryotic cell walls. ~prokaryotes are so small. prokaryotes move so quickly they are hard to photograph. their organelles are small and tightly packed together.
2. Which of the following terms is most closely associated with “resolving power”? ~Clarity Larger size Greater color Lighter image
3. The person who first used the term cell to describe the basic unit of life was Anton Van Leeuwenhoek. James Watson. Louis Pasteur. ~Robert Hooke.
4. Which of the following is true of prokaryotic cells? ~They have no nucleus. They have mitochondria. They have an endoplasmic reticulum. Plant cells are one example.
5. Which of the following consist of prokaryotic cells Plants and animals Bacteria and archaea ~Plants, fungi, bacteria and archaea Plants, bacteria and archaea
6. The cells of a bee and an elephant are, on average, the same small size; an elephant just contains more cells. What is the main advantage of a small cell size? Small cells are less likely to burst than large cells. It takes less energy to make an organism out of small cells. ~A small cell has a larger surface area-to-volume ratio than a large cell. Small cells require less oxygen than large cells.
7. Ribosomes are found on the surface of this structure. Central Vacuole Rough ER Chloroplasts ~Golgi Bodies
Jupiter is the largest planet in our solar system. It is twice as large as all the other planets combined. It has 28 known satellites. The earliest discovered moons date back to 1610 and were discovered by Galileo. This is of interest because a future mission to Jupiter is named after this astronomer. Most of the remaining moons were discovered in the 20th century with advancement of technology. ...
8. The function of the nucleus is to produce proteins. contain the cytoplasm. ~contain and replicate DNA. add sugars to proteins.
9. The function of ribosomes is to synthesize RNA. DNA. lipids. ~protein.
10. Which of the following structures maintains cell shape, anchors the organelles, and moves parts of the cell? Hydrogen bonds ~Cytoskeleton Cilia Golgi complex
11. One of the main structural components of plant cell walls is ~cellulose. glucose. mitochondria. protein.
12. The membranes of cells are primarily composed of lipids and nucleic acids. proteins and nucleic acids. lipids and carbohydrates. ~lipids and proteins.
13. Which of the following correctly matches a structure with its function? ~Mitochondrion-photosynthesis Nucleus-cellular respiration Lysosome-digestion Ribosome-lipid manufacture
14. The student finds a cell of a type never seen before. The cell has both a nucleus and a cell wall. Therefore it must be a ________. ~plant liver animal prokaryotic
15. _________ are the major lipids found in the plasma membrane. Steroids ~Phospholipids Membrane proteins Fatty acids
16. Which of the following is a function of the Golgi apparatus? Protection and support Digestion of organic matter ~Protein modification Protein synthesis
17. A protist that contains contractile vacuoles most likely lives in a marine environment. within the cells of another organism. on land. ~in fresh water.
18. Microtubules are associated with ~protein synthesis. cell shape. digestion. detoxification.
19. Cellular respiration can be described as the conversion of the energy of sunlight to energy stored in organic compounds. ~stored in food molecules to energy stored in ATP. of sunlight to energy stored in inorganic compounds. stored in ATP to energy stored in food molecules.
20. Which of the following is the correct order of events? DNA makes RNA; RNA makes protein. ~RNA makes DNA; DNA makes protein. DNA makes protein; protein makes RNA. RNA makes protein; protein makes DNA.