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
Chapter 3 Notes
| Question | Answer |
|---|---|
| What are differentiated cells? | Cells with specialized characteristics |
| What are the three major parts of a cell? | nucleus) innermost part that contains DNA located in nuclear envelope. cytoplasm) has cytoplasmic organelles in its cytosol. cell membrane) contains the cytoplasm |
| Where is the cell membrane? | the outermost part of the cell |
| What is the cell membrane's purpose? | controls many metabolic reactions and harbors molecules that enable the cell to communicate and interact. Controls what enters and exits the cell. |
| What is a membrane that allows some substances to enter but not others? | a selectively permeable membrane |
| How does the cell membrane allow the cell to send and receive messages | signal tranduction |
| What is the cell membrane made of? | lipids and proteins with some carbs |
| What is the framework of the membrane structure? | double layer of phospholipid molecules that self-assemble so that their water soluble heads form the surfaces of the membrane and their watter insoluble tails form the interior of the membrane |
| What does the interior of the membrane consist of? | fatty acid portions |
| How are membrane proteins classified? | shape, location in bilayer, and function |
| What is an integral protein? | a protein that spans the membrane |
| What is a peripheral protein? | a protein that projects from outer surface of membrane |
| What is both a integral and peripheral protein? | a protein that transverses membrane and extends from outer surface |
| What is a transmembrane protein? | a protein that extends outside and dips into the cytoplasm |
| What is a receptor? | many times a transmembrane protein that receive and transmit messages into a cell |
| What are cellular adhesion molecules? (CAMs) | peripheral proteins that enable certain cells to touch or bond |
| What else is in the cytoplasm other than organelles? | inclusions |
| What is an inclusion? | stored nutrients and are usually temporarily in the cell |
| What is the cytoskeleton? | protein rods and tubules that from a supportive framework |
| Ribosome | particle composed of protein and RNA///synthesizes proteins |
| Endoplasmic Reticulum- E.R. | membranous sacs, canals, vesicles///transports materials within cell, provides attachment for ribosomes, and synthesizes lipids |
| Vescicles | membranous sacs///contains substances that recently entered the cell, store and transport newly synthesized molecules |
| Golgi Apparatus | flattened, membranous sacs///packages and modifies protein molecules for transport and secretion |
| Mitochondria | membranous sacs with inner portions///release energy from food and convert it into usable form |
| Lysosomes | membranous sacs///contain enzymes capable of ingesting worn cell parts or substances that enter cells |
| Peroxisomes | membranous sacs///contain peroxidases, important in the breakdown of many organic molecules |
| Centrosome | nonmembranous structure with 2 rodlike centrioles///helps distribute chromosomes to new cells in cell division; initiates formation of cilia |
| Cilia | motile projections attached to basal bodies beneath the cell membrane///propel fluids over cellular surface |
| Flagellum | motile projections attached to basal bodies benath the cell membrane///enables sperm cells to move |
| Microfilaments and Microtubules | thin rods and tubules///support cytoplasm, help move substances and organelles within the cytoplasm |
| Nuclear Envelope | selectively permeable double membrane that separates the nuclear contents from the cytoplasm///maintains integrity of the nucleus, controls passage of materials, between the nucleus and cytoplasm |
| Nucleolus | dense, nonmembranous body composed of protein and RNA molecules///site of ribosome formation |
| Chromatin | fibers composed of protein and DNA molecules///carries information for synthesizing proteins |
Created by:
wmisaacharris
Popular Anatomy sets