Cell Membranes: Functions and Structure
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Questions and Answers

Water is the universal ______

solvent

Osmosis is the movement of ______

water

Diffusion is the movement of a solute from a high to a low ______

concentration

We live in an isotonic solution where there is a similar concentration of solute inside and outside of the ______

<p>cell</p> Signup and view all the answers

In a hypertonic solution, there is a high extracellular ______

<p>solute</p> Signup and view all the answers

Glucose binds and transporter ratchets, opening to the inside of the cell and releasing ______

<p>glucose</p> Signup and view all the answers

Membranes form a boundary with a lipid bilayer, which serves as a ______ barrier

<p>permeability</p> Signup and view all the answers

The cell and nucleus are examples of membrane-bound ______

<p>compartments</p> Signup and view all the answers

Cells actively pump sodium out and potassium in through ______ processes

<p>transport</p> Signup and view all the answers

Membranes have receptors that can detect signals, enabling ______ processes

<p>communication</p> Signup and view all the answers

In multicellular organisms, cells physically hang onto each other for ______ interactions

<p>cell-to-cell</p> Signup and view all the answers

The fluid mosaic model describes membranes as fluid due to lateral ______

<p>diffusion</p> Signup and view all the answers

The most common secondary structure spanning a membrane is the alpha ______

<p>helix</p> Signup and view all the answers

Phospholipids have hydrophobic fatty acid tails and polar ______ groups

<p>head</p> Signup and view all the answers

Integral membrane proteins are tightly integrated and considered an integral part of the ______

<p>membrane</p> Signup and view all the answers

Simple diffusion does not require any help from proteins and is driven by a ______ gradient

<p>down</p> Signup and view all the answers

The glucose transporter allows glucose to flow down its gradient from ______ concentration to low concentration

<p>high</p> Signup and view all the answers

If all transporters are occupied, you have reached ______

<p>Vmax</p> Signup and view all the answers

The sodium-potassium pump creates a high sodium gradient ______ the cell and high potassium gradient inside the cell

<p>outside of</p> Signup and view all the answers

The energy used to move glucose in by active transport in the Na+-Glucose Symporter comes from the delta G of ______ diffusion

<p>sodium</p> Signup and view all the answers

Mitochondria have their own ______

<p>DNA</p> Signup and view all the answers

The final electron acceptor in cellular respiration is ______

<p>oxygen</p> Signup and view all the answers

Acetyl CoA formation involves converting pyruvate to ______

<p>Acetyl CoA</p> Signup and view all the answers

In the Citric Acid Cycle, acetyl CoA delivers 2 carbon acetyl groups into the ______

<p>process</p> Signup and view all the answers

In the Citric Acid Cycle, the enzyme aconitase converts citrate to ______

<p>isocitrate</p> Signup and view all the answers

Succinate dehydrogenase converts 4-carbon succinate to ______

<p>fumarate</p> Signup and view all the answers

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