Which of these is an example of a hypothesis
a)observe a plant kept in the dark
b) wonder why plants grow well in sunlight
c) leaves may change color due to temperature
d) add different quantities of water to three potted plants

cancer   is   essentially   uncontrolled   mitosis   of specialized cells

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.