A dependent variable in biology is the variable that depends on the other variables...
Polar covalent bonds.
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Answer:
Giant Dragonfly - 2.5 FEET
Modern Dragon Fly - 1-4 Inches.
Explanation:
Size Difference in Percentage: The Giant Dragonfly is 250% - 160% bigger than the Modern Dragonfly.
Prokaryotic cells don't have a nucleus
Answer:
Sometimes molecules cannot move through the cell membrane on their own. These molecules need special transport proteins to help them move across the membrane. Facilitated diffusion is the diffusion of substances with the help of transport proteins in the plasma membrane. These special proteins are called channel proteins or carrier proteins, and they are attached to the cell membrane. In fact, they go through the cell membrane, from the inside of the cell to the outside. Facilitated diffusion is used for molecules that cannot diffuse rapidly through cell membranes on their own, even when the molecules are moving from high to low concentration areas. An example is the sugar plants and animals use for energy, called glucose. Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient so it does not require the use of cellular energy.