Exam 6: Cell Membranes

Refer to the figure below showing the beginning sketch of a secondary transport system that moves lactose into a cell. The system is known to have a lactose transporter and a proton pump.Complete the sketch to show how this system could transport lactose into the cell.

Mice embryos that have a defective gene for the membrane protein integrin display a lack of migration of neural cells within their developing brains.This can be explained by the fact that neural cell movements are mediated by cycles of integrin attachment and detachment to proteins in the _______.

Refer to the diagram below showing the fluid mosaic model. Which of the labeled components is a transmembrane protein?

Which experimental observation would suggest that a cellular organism is protecting itself against a bacterium that is present in its environment?

In animal cells, which process does not involve the uptake of materials into the cell?

The cell membrane is said to _______ as it folds inward to form a pocket around materials in the environment during phagocytosis, pinocytosis, and receptor-mediated endocytosis.