All categories

4 years ago

What instruments was necessary before the dna could be found?

2 answers:

8 0

Before the dna could be found was necessary the microscope. This invention was the starting point of a great variety of advances in the world of science, which started from the world of Microscopy and also changed the way of seeing the world, from the possibility of studying Bacteria and Microbes (what that led to the Bacteriology) until the analysis of our own blood with the discovery of the Red and White Globules, which supposed a strong advance in the world of medicine.

fomenos4 years ago

7 0

Microscopy is a necessary instrument before the DNA could be found.

Further Explanation:

Microscopes are known to enlarge the apparent size of the image. Due to the magnified image, different points in an object can be seen distinctly. Thus, the resolution is increased. In order to perceive the resolution, the image is focused on the retina of the human eye. Photoreceptors (cone cells) on the retina along with neurons form a detection unit of resolution.The types of cells viewed under a microscope have different levels of an organization; therefore, it needs different microscopy to view the structural details of these cells.

For example, observation of nucleus and flagella requires stained specimens to be viewed under a light microscope.Phase-contrast microscopy is used for analyzing different structures of the specimen, with different refractive indexes. Scanning electron microscopy is appropriate for observing the external structures. Different microscopy, therefore, allows a wide range of analysis in the specimen.

Learn More:

1. Learn more about the treatment of eukaryotic cell with a drug brainly.com/question/10767798

2. Learn more about the proteins synthesis in a cell brainly.com/question/1420458

3. Learn more about the exchange of gases by blood cells brainly.com/question/1213217

Answer Details:

Grade: High School

Subjects: Biology

Chapter: Biochemical technique

Keywords:

Organization, microscopy, object, photoreceptors, resolution, analyzing, electron microscopy, scanning, external structure, specimen.

You might be interested in

What is the most important plant source of nutrition for the yanomamo?

sergey [27]

For the Yanomamo, the most important source of nutrition for them is cooking plantains or bananas. The main crops that they usually cultivate are bananas and cassava which are planted in their gardens. When the men are known to be hunters, fishers and horticulturists, the women are the ones who cultivate their land or gardens. The diet of the Yanomamo are usually low in edible salt.

7 0

3 years ago

How does a cell react in salt water

Oksana_A [137]

If unprotected cells are exposed to salt, or a salt water solution where the concentration of the salt is greater than the concentration in the cellular fluid; the water in the cells will be drawn out, "shrivelling" the cell.

(Re-post)

5 0

3 years ago

Read 2 more answers

What can you surmise from the labeled image? The genotype is heterozygous. White petal color is a recessive trait. White petal c

lys-0071 [83]

Answer:

White petal color is a recessive trait.

Explanation:

Further explanation is posted as an attached file due to technical difficulties.

Download pdf

6 0

3 years ago

What process happens after replication in your cells?

Papessa [141]

Answer:

heres your answer

Explanation:

Once completed, the parent strand and its complementary DNA strand coils into the familiar double helix shape. In the end, replication produces two DNA molecules, each with one strand from the parent molecule and one new strand.

7 0

3 years ago

Read 2 more answers

When a zygote develops, the new cells are called stem cells. Stems cells do not have a specific function yet. As they develop, t

Ilya [14]

Correct answer: Differentiation

The stem cell is the group of unspecialized cells that become specialized cell by the process called as differentiation. These cells have the great potential to develop into many different types of cell in the body.

These cells divide regularly and help the body to repair and maintain the dead and damaged tissue of the body. because of the differentiation process, the unspecialized cell is able to acquire the cellular traits that allow them to perform a specialized function.

Hence, the correct answer would be ''Differentiation''

5 0

3 years ago

Read 2 more answers