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
Unit 1 Chapter 3
Assignment connect
| Question | Answer |
|---|---|
| In 1859, Louis Pasteur determined beyond all reasonable doubt that _________blank. | cells only arose from other cells |
| Cells of all species have many fundamental similarities because of _________blank. | common ancestry |
| What is the surface area of a cuboidal cell that measures 5 µm on each side? | 150 µm2 |
| The most important aspect of a good microscope is: | resolution. |
| When the acetylcholine receptor sites on sodium ion channels are not occupied _________blank. | the sodium channels remain closed |
| The ligand for the sodium channel linked to an acetylcholine receptor is _________blank. | acetylcholine |
| Which of the following is true regarding the opening of a sodium ion channel? | It allows the diffusion of sodium ions down its own concentration gradient |
| A ligand can bind to a(n) _________blank on an ion channel. | receptor |
| what is the Golgi complex function? | To regulate transport and modify newly synthesized proteins |
| Mitochondria function | To produce ATP via cellular respiration |
| rough endoplasmic reticulum function: | To synthesize protein for secretion, insertion into the plasma membrane, and lysosomal enzymes |
| Which is false Inclusions are not enclosed by a membrane. Inclusions have no functions that are necessary for cellular survival. Inclusions can participate in ATP production in the cell. Inclusions could be viruses or bacteria inside the cell. | Inclusions can participate in ATP production in the cell. |
| Simple diffusion is defined as the movement of | molecules from areas of higher concentration to areas of lower concentration |
| When sugar is mixed with water, equilibrium is reached when | the dissolved sugar molecules are evenly distributed throughout the solution |
| Which of the following does not affect the rate of diffusion? | The amount of available ATP |
| What does facilitated diffusion require? | Carrier proteins |
| Facilitated diffusion occurs | in either direction depending on the concentration gradient of the molecule |
| Facilitated diffusion is used to transport | sugars and amino acids |
| Osmosis is best defined as the movement of | water molecules across a membrane from an area of high water concentration to an area of lower concentration |
| Which of the following will pass through a cell membrane most easily? | Small nonpolar molecules |
| A red blood cell placed in a hypertonic medium will | shrink |
| hypertonic: | high concentration of solutes |
| hypotonic: | lower concentration of solutes |
| Lysosomes are membrane-bound vesicles that arise from the | Golgi complex |
| The lysosome contains _________blank enzymes. Multiple Choice | hydrolytic |
| Which of the following cells will be expected to contain the most active lysosomes? -Brain cell -Skin cell -Kidney cell -Intestinal cell -Phagocytosing white blood cell | Phagocytosing white blood cell |
| Why are channels through membranes so important for nerve and muscle function? | Both nerves and muscles rely on the rapid transmission of information and of signals for movement. |
| When the acetylcholine binds to the receptor sites, the .. | the sodium channels open |
| When sodium ion channels open, sodium will always diffuse _________blank. | down its own concentration gradient |
| What is the volume of a cuboidal cell that measures 5 µm on each side? | 125 µm3 |
Created by:
Gluis5974