What is a limitation of using electron microscopes to view specimens? (2 points)

Biology

2 answers:

motikmotik2 years ago

6 0

Answer:

The electron microscope uses electrons to form images for this reason does not allow to observe living cells because they need to work in a high vacuum atmosphere, the samples require preparation through a long fixation process, which means that it is not possible to observe living cells. To observe a cell with this microscope, dead cells must be observed, after being fixed and stained with heavy metal ions.

In these microscopes it is not possible to observe the cells carrying out their normal behaviors (for example, migrating or dividing) under the microscope

Grace [21]2 years ago

4 0

The correct answer is <span>C. You cannot view live specimens because the necessary preparation kills cells. </span>

The answer is pretty self-explanatory. Unlike it, regular microscopes can view living creatures such as bacteria or similar.

You might be interested in

imagine that you are a beam of white light traveling through the air .Write a paragraph to explain what happens to you when a gr

professor190 [17]

The once white light beam would turn green. the people (humans) would only see green.

4 0

3 years ago

In this reaction _____. A bar chart of potential energy of molecules for reactants and products. The reactants are A B and C D,

REY [17]

Answer:

The products have less potential energy than the reactants

Explanation:

Potential Energy is energy that can be stored in a physical system and has the ability to be transformed into kinetic energy. Potential energy is the name given to the form of energy when it is 'stored', ie it can at any time manifest itself as chemical reactions, where energy is released as a result of the work done by the reaction. . Thus, the reaction product will have less potential energy than the reactants, an example of this is the reaction described in the question above.

4 0

3 years ago

In silkmoths, red eyes (re) and white-banded wings (wb) are encoded by two mutant alleles that are recessive to those that produ

Anna [14]

Answer:

HSHSHHSHHSHSHSHHD SH JKAH

Explanation:

8 0

3 years ago

Read 2 more answers

Imagine that a protein molecule is to be exported from a cell. describe the pathway that the protein takes from the point of syn

Zielflug [23.3K]

<span>synthesis in rough endoplasmic reticulum
packed, processed in golgi apparatus and exported in vesicles via exocytosis</span>

3 0

3 years ago

What is the Atomic Number of a neutral atom that has 5 neutrons and 4 electrons

dexar [7]

Since it has 4 protons, it must have an atomic number of 4. (That makes it beryllium.)
Since it has a 4 protons and 5 neutrons, it has a mass number of 9.

5 0

2 years ago