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Oksi-84 [34.3K]
3 years ago
11

Which structure is found in both plants and animal cells

Biology
2 answers:
Lemur [1.5K]3 years ago
7 0

Answer: Animal cells and plant cells share the common components of a nucleus, cytoplasm, mitochondria and a cell membrane.

andre [41]3 years ago
7 0

Answer:

the nucleus

Explanation:

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Boris Magasanik collected data on the proportion of each base in RNA from different species. To compare the relative amount of e
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Answer:

The nucleic acid is a macromolecule present in living systems in the form of either DNA or RNA, whose molecule consists of many nucleotides which are linked with each other to form long chains. The presence of DNA or RNA in an individual promotes continuity of life. The variability and complexity of nucleic acid are dependent on its constituent molecules as, sugar, a phosphate group, and a nitrogenous base. However, two monocyclic nitrogenous bases were classified purines (adenine:A, guanine:G) and pyrimidines (thymine:T, cytosine:C, and uracil:U).

In addition, RNA is a single-stranded structure which differs from DNA in two aspects, the sugar content of RNA is ribose, and pyrimidine base uracil replaces the thymine base of DNA. A ratio between two strands of DNA can be calculated by using Chargrff's rule which states that "DNA from any cell of all organisms possess a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases'.

The purine to pyrimidine ratio in RNA with different bases is given below in the following table:

Presence of single strand in RNA does not follow chargaff's rule and alters the purine: pyrimidine ratio. The above ratio of each base in the given information is not equal, due to which the ratio of purines to pyrimidines is different. The ratio of DNA and RNA is not equal because DNA has its complementary DNA strand. However, bases in RNA might vary due to its single-strandedness property, but its ratio is dependent on the species.

Therefore, it can be concluded that the ratio of purines to pyrimidines is dependent on the species due to its genetic makeup. Hence, option (c) is correct.

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3 years ago
Look at Figure 19–7 p.544. Which of the following explains why the edges of Africa and South America fit together like two piece
Ymorist [56]
This question is incomplete. However, the answer to this question is Continental Drift. Approximately 300 million years ago, there were not separate continents, only one giant super continent that we call Pangaea. Over time, scientists realised that the Earth's outer shell slides over the inner mantle through plate tectonics. Around 200 million years ago, Pangaea began to break up through the process of continental drift. Gondwana, incorporating present-day <span>Africa, South America, Antarctica, India and Australia, split from Laurasia (Eurasia and North America). Approximately 150 million years ago, Gondwana started to break up into the present day continents</span>
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Flamingos are only one of the many species of birds that are protected in the Andalucia Donana National Park. The flamingos bree
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I would say A. or C.
5 0
3 years ago
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What is the fossil connection between Indohyus and the whale? What is the function of this bone? Why do you think these mammals
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Answer:

Indohyus is a fossil, found in 2007, of a chevrotain-like mammal believed by some paleontologists in the Evil Liberal Science Conspiracy to be a transitional form between land-dwelling mammals and the ancestor of whales.

The origin of cetaceans from land-living mammals is among the most famous of these events. Much earlier, during the Mesozoic Era, many reptile groups also moved from land to wate

Explanation:

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2 years ago
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una de las hebras de ADN de un cromosoma de cierto organismo tiene 5 millones de bases nitrogenadas ¿cuantos nucleótidos debe te
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La hebra complementaria debe tener 5 millones de nucleótidos, porque cada nucleótido tiene una base nitrogenada, y la hebra complementaria debe tener la misma cantidad de bases nitrogenadas que la hebra original. (Recuerda que las dos hebras "encajan" una con otra).


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