What type of transport can move big molecules across the cellular membrane? What does the cell membrane keep out? When molecules use facilitated diffusion, what kind of protein will they need to help them move molecules across the membrane? What is the hydrophobic part of the cell membr...
is the tendency of molecules to spread out in order to occupy an available space. Gasses and molecules in a liquid have a tendency to diffuse from a more concentrated environment to a less concentrated environment. Passive transport is the diffusion of substances across a membrane. This is aspo...
Two molecules that can cross a lipid bilayer without help from membrane proteins are O_2 and CO_2. What properties allow this to occur? How does the polarity of charge of a solute molecule affects diffusion across a membrane? How does the asymmetric distribution of ...
Not every molecule can cross the cell membranes. The molecules should be small and non-polar to traverse the membrane. For eg., glucose is a large molecule that cannot diffuse across the cell membrane. Ions like sodium, potassium, and calcium are charged and are repelled by the cell membran...
Only small molecules with minimal charge and polarity are able to diffuse freely across a cell's plasma membrane. Polar molecules are almost always incapable of doing so without the aid of proteins. These proteins can form transmembrane channels, which are essentially tunnels through the membrane, ...
Diffusion is the process wherein the molecules move from a region of higher concentration to a region of lower concentration down the concentration gradient.
Fill in the blank: A carrier protein that moves more than one kind of molecule across the plasma membrane at a time is generally called a. Proteins serve as the machinery for the living cells. What type of molecules are used to produce proteins? Identify the term: The plasma membrane ...
The process through which molecules moves across the cell membrane and down the concentration gradient is called ___? What do we call the movement of the cell against a concentration gradient? What regulates solute concentration inside and outside of the cell? Is it electrolyte...
Total dissolved solids (TDS) measure the combined total of organic and inorganic substances contained in a liquid. This includes anything present in water other than the pure H20 molecules. These solids are primarily minerals, salts, and organic matter that can be a general indicator ...
Diffusion is the passive movement of molecules from an area of high concentration to an area of low concentration whereas osmosis is the movement of a solvent such as water from an area of low solute concentration to an area of high concentration ...