Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

TOOLS OF LIFE SCIENT

Science Chapter 1 Section 4

TermDefinition
compound light microscope Consists of a tube with lenses, a stage, and a light source- it magnifies the image, common in science classrooms. Range of magnification @ 40x -400x. Review parts and functions.
electron microscope Tiny particles of matter are used to magnify images. NEVER LIVE SPECIMENS
transmission electron microscope (TEM) Electrons pass through the specimen and produce a flat image-can magnify up to 200,000 times the actual size. (No live specimens)
scanning electron microscope (SEM) Electrons bounce off the surface of the specimen and a three-dimensional (3-D) image is produced-can magnify up to 100,000 times the actual size. (No live specimens)
X-rays Used for almost a century to see internal structures of organisms (bones, heart, lungs) and the structures of proteins (DNA).
CT scans(computerized tomography) Low dosage x-ray beams are passed through the body at different angles, and often a dye is injected to help highlight tissues-provides a clearer, more detailed image than x-rays-useful for studying brain and spinal tissue. Fast results less expensive.
MRI(magnetic resonance imaging) Provides a clearer image than x-rays by using short bursts of magnetic field -useful for studying brain and spinal tissue. Takes 25-60 minutes to get results. Uses a computer to display
Computers Can collect, store, organize, and analyze information-can create graphs, solve math problems, and analyze data. With the help computers, life scientists are able to solve problems that they were not able to solve in the past.
Be sure to review your class notes.
Created by: tziccardi
Popular Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards