Which of the following correctly describes how molecules move during diffusion? (select all that apply)

a
molecules move against their concentration gradient.
b
molecules move from low to high concentration.
c
molecules move with their concentration gradient.
d
molecules move from high to low concentration.

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!

Which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.the framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane.the diverse proteins found in and attached to membranes perform many important functions.the kinky tails of some proteins keep the membrane fluid by preventing the component molecules from packing solidly together.membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.