What is the main difference between a prokaryotic cell and a eukaryotic cell? a prokaryotic cell has flagella, and a eukaryotic cell does not. a prokaryotic cell has ribosomes, and a eukaryotic cell does not. a eukaryotic cell has a cell wall, and a prokaryotic cell does not. a eukaryotic cell has a nucleus, and a prokaryotic cell does not.

69. air frictionthe velocity of the satellitea. decreases b. increases c. sometimes increases sometimedecreases d. no effect at all70. the unit of gravitational potential energy isa.jouté b.watt c. newtond.pascal71. which of the following is not influenced by a magneta. cobalt b.copper c.irond. nickel72. one joule of work done in one second by unit positive chargea.1 watt b.1 volt c.1 js d. none73. the most deviated colour of light after passing through a prisea. violet b.red c. green d.yellow4. a coin is placed below a beaker fill with water upto 12 cm isdisplaced by water isa. 9cm b.6cmс.3cmd.7cm