Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
A&P1
| Term | Definition |
|---|---|
| fThe structural and functional unit of all living organisms is the | Cell |
| All of the chemical reactions within a cell are known as cell | metabolism. |
| Cells produce and respond to chemical and electrical signals as a means of | Communicating |
| The lower limit of resolution of a light microscope is | 0.1mm |
| be used to study general features of cells | Light Microscope |
| Which of the following is NOT a characteristic function of a cell? | movement |
| Which of the following is NOT true of a transmission electron microscope (TEM)? | Gives the clearest three-dimensional images. |
| In order to study in detail the anatomy of internal cell parts, it would be best to use | a transmission electron microscope (TEM). |
| Which of the following activities is a function of the plasma membrane? | recognition of bacterial cells by the immune system |
| The plasma membrane | regulates movement of materials into and out of the cell. |
| The environment outside the plasma membrane is most appropriately referred to as | extracellular. |
| Glycolipids would contain both lipids and | carbohydrates |
| The main components of the plasma membrane are | proteins, lipids, and carbohydrates. |
| The collection of carbohydrates, glycolipids, and glycoproteins of the plasma membrane is called the | glycocalyx. |
| When a sperm cell comes into contact with an egg cell, there is a change in the electrical charge across the plasma membrane and various channel proteins close. These channels would be called | voltage-gated channels |
| Plasma membrane phospholipids | have a hydrophilic head and hydrophobic tails. |
| Plasma membrane phospholipids | have nonpolar fatty acid tails; form a bilayer; have polar phosphate heads; create a selectively permeable barrier. |
| The second most abundant of the lipids in the plasma membrane is/are | cholesterol |
| The predominant lipid in the cell membrane is a | phospholipid. |
| The fluid-mosaic model of the plasma membrane suggests that | the membrane is neither rigid nor static in structure. |
| According to the most current model of the plasma membrane, | proteins are free to move about within a double layer of phospholipids |
| Membrane proteins that extend into the lipid bilayer are called | integral proteins |
| Channel proteins | provide a tunnel through which ions or molecules can enter or leave the cell. |
| Molecules that serve as chemical signals to open or close gated ion channels are | ligands. |
| Cells that respond to ligands | possess receptor sites for specific ligands. |
| Communication between cells occurs when chemical messengers from one cell bind to _____ on another cell. | receptor proteins |
| Membrane-bound receptors | have their receptor sites on the outer surface of the plasma membrane. |
| Communication between cells is essential to coordinate the activity of the trillions of cells that make up the human body. Which of the following is (are) directly involved in carrying out communication between cells? | both receptor proteins of the plasma membrane and chemical signal molecules released by cells |
| What type of membrane proteins have an exposed site on the outer cell surface that can attach to a ligand? | receptor proteins |
| What type of membrane proteins are integral proteins that move ions or molecules across plasma membrane? | carrier proteins |
| What type of membrane proteins form a passageway through the plasma membrane? | channel protein |
| What type of membrane proteins allow cells to identify one another? | marker molecules |
| What type of membrane proteins can catalyze chemical reactions on the inner or outer surfaces of the plasma membrane? | enzymes |
| What type of attachment proteins attach cells to extracellular molecules? | integrins |
| Which of the following is NOT a G-protein complex protein? | delta |
| Which of the following is NOT true of G-protein complex action? | Stimulates a cell by means of extracellular chemical signals |
| Which of the following is CORRECTLY matched with its function? | receptor proteins - attach to ligand molecules |
| Which of the following is CORRECTLY matched with its function? | carrier proteins – move bound ions or molecules from one side of the membrane to the other |
| Which type of transport proteins use cell energy to move molecules across the plasma membrane? | ATP-powered pumps |
| A symporter will transport _____ across the cell membrane. | two different ions or molecules in the same direction |
| In _______, ions or molecules move in opposite directions. | antiport |
| In general, water-soluble molecules diffuse through the ______ ______; and lipid-soluble molecules diffuse through the ______ ______. | membrane channels; lipid bilayer |
| The plasma membrane is selectively permeable. This means | only certain substances can pass through it. |
Created by:
AnMarWill