If magnesium ions are in higher concentration outside the cell, they would move into the cell by the process of: a) facilitated diffusion through a carrier protein b) osmosis c) secondary active transport d) facilitated diffusion through a channel protein e) exocytosis f) simple diffusion g) primary active transport

Which of the following statements is correct about diffusion? a) It is an active process in which molecules move from a region of lower concentration to one of higher concentration. It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration. c) it requires integral proteins d) It is a rapid process

During diffusion an individual particle moves: A) randomly toward the region of lower concentration B) randomly toward the region of higher concentration C) randomly towards the center of the container D) not at all

A cell membrane with no proteins will still show which process? a) active transport b) facilitated diffusion c) osmosis d) None of these

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In terms of their effect on the rate of diffusion, which of the following is the odd one out? a) decreasing the surface area of the membrane b) decreasing membrane permeability c) decreasing lipid solubility of the diffusing molecule d) decreasing the concentration gradient of the diffusing molecule e) decreasing the thickness of the membrane

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2) Explain how the following cell transport systems work moving materials around inside the cell and other functions. Focus on structure and function, and Include how energy is used to accomplish these movements. A)Tubulin/Kinesin B)Actin/Myosin

An ionophore: A) increase the membrane potential B) transports ionic proteins across a membrane C) disrupts ion gradients D) forms channels when inserted into a membrane E) often has antibiotic properties because it can block the transport of ions

How are the intrinsic proteins in cell membrane distributed?a) Uniformb) Randomc) Symmetricd) Asymmetric