20 Figure 11. A mobile antenna horizontal-plane pattern [13]Figure 12. Corner-reflector antennas light bar mounted on the roof ahead of theantenna. 5.3 Corner Reflector An antenna comprised of one or more dipoleelements in front of a corner reflector, calledthe corner-reflector antenna, is illustrated infigure 12.
Cheek cells, being animal cells, do not contain a cell wall as onion â¦ cells do becasue cell walls are found only in plant cells for structure and rigidness. Onion cells, unlike most plant cells, do not have chlorplasts becasue it does not need sunlight for photosynthesis as other plants do.
To sum it up, both types of cells have a nucleus, a cytoplasm, and a cell membrane. A cell from a plant has a large cell vacuole, chloroplasts, a cell wall and a regular shape. Small vacuoles, no cell wall, varied shapes, and the absence of chloroplasts characterize the animal versions.