Exam 5: Membranes and Transport

Two solutions of differing glucose concentration are placed in a container separated by a selectively permeable membrane that restricts large molecules like glucose, but allows the free diffusion of water. What will be the glucose concentration in the container after dynamic equilibrium has been reached?

The movement of water across a membrane from an area of high to low water concentration is an example of ____.

In secondary active transport, when the driving ion concentration is high and the transport ion concentration is low outside of the cell, in which direction will the two ions move?

Carrier proteins are utilized for ____.

Aquaporins are ____.

According to the fluid mosaic model of cell membranes, the fluid part of the model refers to ____.

Which organelle's membrane contains the enzymes that convert light energy to chemical energy in eukaryotes?

Carrier proteins are often used by the cell to transport ____.

Which molecules most easily diffuse across a cell membrane?

Transport of a molecule across a cell membrane by facilitated diffusion ____.

The selective permeability of a cell membrane is due to ____.

Explain how cells can adapt to colder temperatures by altering the number of double bonds in the lipids that comprise cell membranes.

In facilitated diffusion, the membrane components responsible for transport are proteins.

When a drop of food coloring is placed in a container of clear water, the colored dye molecules ____.

In primary active transport, the carrier protein that transports a substance also hydrolyzes ATP to power the transport directly.

In plants, extreme wilting of leaves and stems can cause the cells to retract from the cell wall, a condition known as ____.

An animal cell placed in a hypertonic solution will swell and perhaps burst.

Bulk endocytosis is also called pinocytosis.

People with type A blood have red blood cells that express one type of recognition protein, while those with type B blood express a different recognition protein. People with AB blood express both recognition proteins. Why can a person with AB blood receive blood from a person with type A, but a person with type A blood cannot receive blood from a person with type AB?