Biology, 25.12.2019 07:31, NearNoodle23

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 longerb. contrast is enhanced by staining with atoms of heavy metalc. electron beams have much shorter wavelengths than visible lightd. the electron microscope has a much greater ratio of image size to real size

Answers: 3

Show answers

Other questions on the subject: Biology

Biology, 21.06.2019 19:40, Ashleyrango5371

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

Answers: 1

continue

Biology, 22.06.2019 09:00, anggar20

What should be the strand of complementary dna produced by the strand of dna shown below cgt ata

Answers: 1

continue

Biology, 22.06.2019 15:40, mesposito

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.

Answers: 1

continue

Biology, 23.06.2019 02:50, ilovesummertime207

Monkeys and humans share many of the same dna sequences and have similar proteins, indicating that a) the two groups belong to the same specie b) the two groups share a relatively recent common ancestor c) the two groups first appeared on earth at about the same time d) monkeys evolved from humans

Answers: 1

continue

Do you know the correct answer?

What is the reason that a modern electron microscope (tem) can resolve biological images to the subn...