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34kurt
3 years ago
13

Which is an component of the modern cell theory that was not part of the original cell theory?

Biology
2 answers:
Talja [164]3 years ago
6 0

The modern cell theory states that living organisms are made of cells, that all cells come from other cells and that cells are the most basic life form. As scientific advancements are made, definitions of theories, like the cell theory, are updated. The modern cell theory is not the same as cell theory of the past.

madreJ [45]3 years ago
3 0

Answer:

"All cells are similar in composition and metabolic activities."

Explanation:

Cell Theory is the key theory for the study of Cell Biology, as it refers to the cellular composition of living things. The cellular theory is composed by the ideas of Schwann, Schleiden and Virchow and was based on three basic ideas:

  • All living organisms are formed by one or more cells and the structures they produce;
  • Cells are considered morphological and functional units of all life forms;
  • All cells originate from another pre-existing cell, ie all cells are capable of division.

Schwann, Schleiden, and Virchow, however, believed that all cells were similar in composition and metabolic activity and included this idea in cell theory. However, over the years and the advancement of technology this thinking has been discredited and today, current cellular theory, asserts that not all cells are similar in composition or metabolic activity.

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Which of the following explains the role of plants in the carbon cycle?*
Dovator [93]

Answer:

Plants transfer carbon dioxide in the atmosphere to carbohydrates in the biosphere.

Explanation:

Plants are unique organisms being that they have the unique ability to manufacture their own food via the process of PHOTOSYNTHESIS. Hence, they are called AUTOTROPHIC. Photosynthesis is the metabolic process by which plant cells make sugar (glucose) in the presence of sunlight.

However, in the photosynthetic process, plants require inorganic source of carbon called CARBON DIOXIDE (CO2) and water to perform the process. The chemical overall reaction of photosynthesis is as follows:

6CO2 + 6H2O → C6H12O6 + 6O2

This explains the role of plants in the carbon cycle as they help transfer carbon dioxide (CO2) in the atmosphere to carbohydrates in the biosphere (living organisms).

7 0
3 years ago
A man whose mother is color blind marries a woman with normal vision. What is the genotype of the husband?
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6 0
3 years ago
Two species of garter snakes live in the same geographic area. One lives mainly in water and the other mainly on land; therefore
11111nata11111 [884]

Answer:

The correct answer is ecological isolation.

Explanation:

The condition when two species in spite of living in the same region, exhibits certain characteristics, which inhibits them from mating with each other is termed as reproductive isolation. The obstructions or the causes that prevent them from interbreeding is known as isolating mechanisms.  

The given case is an example of ecological isolation and is one of the forms of reproductive isolation. Habitat or ecological isolation refers to the phenomenon in which two species cannot mate with each other as they thrive in two distinct locations. Like as mentioned, two species of garter snakes though coming from the same geographical area cannot interbreed, as one of them is living in the land and the other one in the water.  

7 0
3 years ago
What happens when human body temperature rises during exercise?
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7 0
4 years ago
I need help, I don't understand this, so please try to explain?
Vinvika [58]

Answer:

Yeah, so basically the image is showing restriction enzymes. The job of restriction enzymes is mainly involved in research when scientists use them for cloning human genes. But that's besides the point...

Main thing you have to understand is that restriction enzymes cut at very specific places along DNA sequences. If you look at the restriction enzyme Rsa 1, you can notice that it cuts only between a thymine nucleotide base and an adenine nucleotide base. Next, if ya look at Sty 1 (be careful b/c W can represent adenine or thymine), it cuts only between two directly adjacent cytosine nucleotide bases!

SO.... if we go to Rsa 1, we can find the answers by dividing up the sequences between the pattern we saw in the gray box. It only cuts between adenine and thymine bases. Based on that, we can find the number of fragments created, and the segment lengths (basically just like how many nucleotide bases are in each strand). Hope ya found this helpful!

3 0
3 years ago
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