The modern classification is based on a six Kingdom system-
<span>1- Animalia</span>
2- Plantae
3- Fungi
4- Protista
5- Archaea bacteria
6- <span>Eubacteria </span>
Answer:
A is the right answer
Explanation:
Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment.
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Answer:
each of the two daughter DNA molecules contains one strand from the original DNA molecule and one newly synthesized strand.
Explanation:
DNA replication is a semi-conservative process. The two parental DNA strands are separated from each other by the action of helicases. The separated DNA strands serve as the template. Primase enzyme forms primers which are elongated by DNA polymerase enzymes. These enzymes elongate the primer by the addition of deoxynucleotides complementary to the sequence of the template DNA strand.
Therefore, DNA replication forms two DNA double helices from one parental DNA molecule. Each of the daughter DNA molecules contains one parental DNA strand and one newly formed DNA strand making the process semi-conservative.
Answer:
Its Located in the Plant Cell called Vacuole
The answer is An endangered species is a type of organism that is threatened with extinction. Species are becoming endangered for two main reasons: habitat loss and loss of genetic variation.
- Habitat loss can occur naturally. The dinosaurs, for example, lost their habitat about 65 million years ago. The hot, dry Cretaceous climate changed very quickly, most likely due to an asteroid impact on Earth. The asteroid's impact threw debris high into the atmosphere and reduced the amount of heat and light reaching Earth's surface. The dinosaurs could not adapt to this new, cooler habitat. The dinosaurs were threatened with extinction and then died out.
- Human activities can also contribute to habitat loss. The development of settlements, industry and agriculture reduces the habitat of native organisms. This can be done in a number of ways.
- Development may directly remove native habitats and species. In the Amazon rainforest in South America, developers have cleared hundreds of thousands of hectares. Clearing a piece of land means removing all trees and vegetation. The Amazon rainforest is being cleared for ranching, logging and urban use. That means the habitat can support fewer cougars. However, since large parts of the Sierra Nevada, Rocky and Cascade mountain ranges remain undeveloped, cougars are not in danger.
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