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valkas [14]
3 years ago
13

How must samples be prepared for observation by an electron

Biology
1 answer:
adoni [48]3 years ago
3 0

Answer:

They must be preserved and dehydrated

Explanation:

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Which carbohydrates are found in our genetic material?
Kisachek [45]

The carbohydrates found in our genetic material are the two sugars deoxyribose and ribose.

Carbohydrates are defined as organic compounds which occur in food and living tissue and include starch, sugars and cellulose. They are composed of hydrogen, oxygen and carbon.

Deoxyribose is a sugar found in the structure of DNA, while the sugar ribose is found in the structure of RNA.

DNA is the molecule that carries the cell's genetic information while RNA is the molecule involved in synthesis of protein using the coded information received from DNA.

Both DNA and RNA are termed as the genetic molecules of life.


7 0
3 years ago
Which of the following is true of organisms?
swat32

Answer:

2nd

Explanation:

all organisms have a common ancestor

8 0
3 years ago
What does biodiversity prevent?
rodikova [14]

Answer:

spend time removing introduced species, which can mean physically weeding invasive plants or trapping invasive animals. ... Others work to reduce harvesting directly or to reduce the incidental catch of nontarget species.

6 0
3 years ago
Which is part of the theory of evolution by natural selection?
Katen [24]

Answer:

The correct answer is: A. Only the best-adapted animals in a population survive.

Explanation:

  • Natural Selection is the process by which the individuals of a species which has the potential to sustain and survive in adverse or changing environment gets a survival advantage over those individuals which are unable to adapt themselves to altered environmental conditions.
  • As the less potent individuals die in altered environmental conditions the  adaptable individuals escapes competition with them for natural resources.
  • Evolution causes species to alter their characteristics depending upon the demand of the conditions. These changes can vary, can be less or drastic.
  • Animals pass all the newly adapted traits to the successive generations either as genetic traits or as acquired traits, as this is necessary for the offspring to survive in the altered environment.
  • Natural selection is best defined as "the survival of the fittest".

8 0
4 years ago
What household object could represent the nucleolus of an animal cell?
kozerog [31]
A computer to a moteter for literal use
For a diagram you could use a ball of somesort
3 0
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