Biology Quiz 5

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plasmodesmata

Gap junctions in animal cells are most similar to what in plant cells?

Phospholipids and proteins

What are the two major components of cell membranes?

Passive diffusion

a spontaneous process

Antiporters

what binds two or more ions or molecules and transport them in opposite directions across a membrane.

fluid

Cellular membranes are mosaic and

facilitated diffusion.

Following a meal, glucose must move from the gut lumen where there is a high glucose concentration into the intestinal cell where there is a relatively low level of glucose. This movement is called

Symporter

The movement of sucrose and H+ into the cell by the same membrane protein reflects the actions of what type of transporter

used to generate sodium and potassium gradients across the membrane

The plasma membrane Na+/K+-ATPase pump

exocytosis

The release of the protein insulin from pancreatic cells occurs by

osmosis

movement of water from an area of low to high solute concentration


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