1) What is the function of a ribosome? a) To release energy from glucose b) Protein synthesis c) To build sugars by photosynthesis 2) A type of white blood cell called a macrophage measures 5 x 10-5 m. What does it measure in micrometres? a) 5 μm b) 50 μm c) 500 μm 3) If the actual size of a cell is 100 μm, and 10 cm in a book, what is the magnification of the image in the book? a) 10 b) 110 c) 1000 4) How have microscopes developed over the years? a) Increased magnification, decreased resolution b) Increased cost, decreased depth of field c) Increased magnification, increased resolution 5) Which of the following is an advantage of the transmission electron microscope compared with the light microscope? a) Higher magnifications are possible with the transmission electron microscope b) The transmission electron microscope has a lower resolution c) The transmission electron microscope has a greater depth of field 6) Which of the following is the correct sequence for setting up a microscope on high power? a) Focus on low power with the coarse adjustment, move the high power objective in line with the specimen, refocus on high power with the fine adjustment b) Focus on low power with the fine adjustment, move the high power objective in line with the specimen, refocus on high power with the coarse adjustment c) Focus on high power with the coarse adjustment, refocus on high power with the fine adjustment 7) Which of the following is an adaptation to the transport of substances in the xylem? a) Companion cells provide the energy required for xylem transport b) The ends of xylem vessels are perforated, like a sieve, so that substances can be transported c) There are no end walls, and the side walls are thickened 8) How is a muscle adapted to its function? a) It contains protein filaments that slide over each other and cause contraction b) Muscular tissue has many nuclei c) Muscular tissue has few mitochondria 9) Which of the following is a feature of eukaryotic cells not present in prokaryotic cells? a) Plasmids b) DNA c) Mitochondria

Cell Structure Test

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?