Human Anatomy (Marieb)
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| 46 | number of chromosomes in a somatic cell
🗑
|
||||
| 23 | number of chromosomes in a sex cell
🗑
|
||||
| Flagellum | moves the cell
only the sperm cells have these in humans
🗑
|
||||
| Cillia | Microtubules - moves things past the cell
often by mucus cells
🗑
|
||||
| microvilli | extensions of the cell membrane
help increase surface area of the cell
🗑
|
||||
| three main parts of a human cell | Plasma membrane
cytoplasm
nucleus
🗑
|
||||
| Plasma membrane | the outer boundary of the cell that acts as a selectively permeable membrane
🗑
|
||||
| Cytoplasm | fluid in the cell packed with organelles
🗑
|
||||
| organelles | small structures that perform specific cell functions
found in the cytoplasm
🗑
|
||||
| nucleus | an organelle that controls cellular activities
usually lies near the center of the cell
🗑
|
||||
| extracellular materials | substances contributing to body mass that are found outside the cells
🗑
|
||||
| interstitial fluid | blood plasma and cerebrospinal fluid
🗑
|
||||
| 5 functions of the plasma membrane | mechanical barrier
selective permeability
electrochemical gradient
communication
cell signaling
🗑
|
||||
| Glycolipids | lipids with attached sugar groups
🗑
|
||||
| Name 3 membrane lipids | phospholipids
glycolipids
cholesterol
🗑
|
||||
| Integral proteins | proteins firmly inserted into the lipid bilayer
🗑
|
||||
| peripheral proteins | proteins loosely attached to integral proteins
🗑
|
||||
| tight junctions | a series of integral protein molecules in the plasma membranes of adjacent cells fuse together, forming an impermeable junction that encircles the cell
🗑
|
||||
| desmosomes | anchoring junctions that bind adjacent cells together act like molecular velcro and also help form an internal tension-reducing network
🗑
|
||||
| gap junctions | communicating junctions that alow ions and small molecules to pass ae particularly important for communication in heart cells and embryonic cells
🗑
|
||||
| diffusion | the tendency of molecules or ions to move from an area where they are in higher concentration to an area where they are in lower concentration
🗑
|
||||
| selective permeability | allowing some substances to pass while excluding others
🗑
|
||||
| simple diffusion | nonpolar and lipid-soluble substances diffuse directly through the lipid bilayer
🗑
|
||||
| What three characteristics will allow things to pass through the selective permeable barrier | lipid soluable
small enough to pass through the channels
those assisted by a carrier molecule
🗑
|
||||
| Osmosis | the diffusion of a solvent (like water) through a selectively permeable membrane
🗑
|
||||
| carriers | transmembrane integral proteins that are specific for transporting certain polar molecules or classes of molecule, such as sugars or amino acids, that are too large to pass through membrane channels
🗑
|
||||
| channels | transmembrane proteins that transport substances, usually ions or water, through aqueous channels from one side of the membrane to the other
🗑
|
||||
| tonicity | the ability of a solution to change the shape or tone of cells by altering the cells' internal water volume
🗑
|
||||
| isotonic solutions | have the same concentrations of nonpenetrating solutes as those found in the cells
🗑
|
||||
| hypertonic solutions | have a higher concentration of nonpenetrating solutes as those in the cells
🗑
|
||||
| hypotonic solutions | have a lower concentration of nonpenetrating solutes as those in the cells
🗑
|
||||
| Active membrane transport | transport that requires carrier proteins that combine specifically and reversibly with the transported substances
🗑
|
||||
| What are solute pumps? | active transporters that move substances "uphill" or against the concentration gradient
🗑
|
||||
| A cell with many mitochondria would most likely be involved in... | ATP manufacture
🗑
|
||||
| What would you expect to happen when a cell is placed into a hypertonic solution? | Water flows out of the cell and the cell shrinks
🗑
|
||||
| True or False. Active transport only occurs in a living cell. | True (Active process involves energy. There is no energy in dead cells)
🗑
|
||||
| Which cellular organelle is responsible for lipid manufacture and detoxification? | Smooth Endoplasmic Reticulum
🗑
|
||||
| True or False. Blood plasma represents one type of intracellular fluid. | False (it is extracellular)
🗑
|
||||
| Which type of junction acts like a zipper to prevent the passage of materials between cells? | Tight junctions
🗑
|
||||
| A chemo drug works by attaching to and damaging the mitotic spindle. Why would this drug be fatal to the cell and thus beneficial for chemotherapy? | It destroys the spindle making it impossible for the cell to complete mitosis and reproduce.
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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
Created by:
twolden1
Popular Anatomy sets