iClicker Q's- Cell Membrane

C.) (Since the membrane is impermeable to glucose, it must pass through some sort of channel. Facilitated diffusion using a gated channel is a form of passive transport, because it still allows for the concentration gradient to help power the movement of glucose.)

A bacterial cell must obtain glucose for its metabolism. If glucose is in higher concentration outside the cell than inside, but the plasma membrane and other surface layers of the cell do not allow glucose to pass through, which is the most likely type of transport for glucose? A.) Simple diffusion B.) Osmosis C.) Facilitated diffusion via a gated channel D.) Facilitated diffusion via an aquaporin E.) Facilitated diffusion via an ion channel

b. gain; osmosis

A red blood cell placed into a container of distilled water will ________ water via ____________. A.) gain; diffusion B.) gain; osmosis C.) lose; diffusion D.) lose; osmosis

b. inside the target cell's cytoplasm or nucleus

Based on your knowledge of the cell membrane's chemistry, where would steroid hormones most likely interact with their target cell? A.) Through interaction with an integral membrane protein B.) Inside the target cell's cytoplasm or nucleus C.) Steroid hormones don't interact with target cells D.) On the exterior surface of the cell

d. the polar heads face the interior and exterior of the cell with the tails forming the center of the membrane

Based on your knowledge of the cell membrane's chemistry, where would steroid hormones most likely interact with their target cell? A.) the polar heads are pointed toward the center of the membrane B.) the nonpolar tails are oriented toward the interior of the cell, next to the cytoplasm C.) the polar heads and nonpolar tails alternate facing inward D.) the polar heads face the interior and exterior of the cell with the tails forming the center of the membrane

c (Transport vesicles travel directly from the ER to the cis face of the Golgi, bringing membrane from one to the other, resulting in similar molecular composition.)

In which pair are cell membranes most likely to be similar in their molecular composition? A.) nuclear envelope and endoplasmic reticulum B.) trans face of Golgi apparatus and nuclear envelope C.) cis face of Golgi apparatus and endoplasmic reticulum D.) endoplasmic reticulum and inner mitochondrial membrane E.) inner mitochondrial membrane and chloroplast thylakoid membrane

d. A white blood cell engulfing a bacterium

Which of the following is not an example of simple diffusion? A.) Gas exchange in our lungs B.) A dissolving sugar cube C.) Popcorn odor permeating the room D.) A white blood cell engulfing a bacterium