Author Question: What is the reason that a modern electron microscope (TEM) can resolve biologica (Read 1661 times)

camila

  • Hero Member
  • *****
  • Posts: 705
What is the reason that a modern electron microscope (TEM) can resolve biological images to the subnanometer level, as opposed to tens of nanometers achievable for the best super-resolution light microscope?
A) The focal length of the electron microscope is significantly longer.
B) Contrast is enhanced by staining with atoms of heavy metal.
C) Electron beams have much shorter wavelengths than visible light.
D) The electron microscope has a much greater ratio of image size to real size.
E) The electron microscope cannot image whole cells at one time.



ricki

  • Full Member
  • ***
  • Posts: 200
Pick C as your answer. We had a question like this on our previous test. Good luck!



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

camila

  • Hero Member
  • *****
  • Posts: 705


 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

For a complete list of videos, visit our video library