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Sergeu [11.5K]
3 years ago
9

List several mutagens that can increase the frequency of mutations​

Biology
1 answer:
Ipatiy [6.2K]3 years ago
5 0

Answer:

Mutagens can be described as substances which cause mutation. Mutations can be described as any changes in the DNA of an organism.

Mutations can be introduced by chemicals or naturally.

Mutagens which can cause mutations are:

  • X-rays
  • Ultraviolet radiation
  • Chemical mutagens such as Alkylating agents such as ethylnitrosourea.
  • Certain Alkaloid
  • Bromine

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What main idea about the nature of the cell did historical scientists disagree on?
VLD [36.1K]

Explanation:

Scientists didnt belive that there are cells untill robert hooke (1665). He observed the cells in a cork slice with the help of a PRIMITIVE microscope

Leeuwenhoek (1674), with the help of an improved microscope, discovered free living cells in pound water for the first time.

It was robert brown in (1831) who discovered the nucleus in the cell.

Purkinjie in 1839 coined the term 'protoplasm' for the fluid substance of the cell.

THE CELL THEORY, that all plants and animals are composed of cells and that the cell is the basic unit of life, was presented by two biologists, schleiden (1838) and schwann(1839). The cell theory was fuether expanded by virchow (1855) by suggesting that all cells aris form PRE-EXISTING cells. With the discovery of the electron microscope in 1940,it was possible to observe and understand the complex structure of the cell and its various organelles.

Well, thats the history of the discovery of cells.

7 0
2 years ago
ALL naturally formed, solid chemical substances are considered to be _____.
timofeeve [1]
The Correct Answer Would Be (C) Minerals
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3 years ago
Which food apple, steak, celery,olive oil,potato,avocado,egg contains macromolecule
faust18 [17]

Answer:

Meat and meat products (beef, chicken, lamb, pork or kangaroo)

Fish and seafood.

Eggs.

Dairy food such as milk and yogurt (also carbohydrate)

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Explanation:

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15 POINTS ANSWER FAST -- Choose the correct description of a comet.
VikaD [51]

Answer:

Bodies of ice and rock that orbit the Sun and produce a coma and tail of vapor and dust when near the Sun

Explanation:

So if you go to the NASA dictionary it states:

Comet- cosmic snowballs of frozen gases, rock, and dust that orbit the Sun.

So it is most definitely the second option

Have a great day :D

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