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Viruses reproduce within the living cells of the host and use the cellular machinery to synthesize their own genome and other components. To gain entry into cells, they have developed a variety of mechanisms to introduce their genes and proteins into host cells.
Answer: Option D.
Cyclins are proteins that regulate the cell cycle at molecular level.
Explanation:
Cell cycle refers to series of activities that take place in the cell leading to replication of DNA and division of cytoplasm to give two daughter cells. Cell cycle are regulated by a set of proteins called cyclins.
Cyclins are group of proteins the bind and activates cycling dependent kinases enzymes in order to control cell progression through the cell cycle.
Flooding is the term used to characterize the process that occurs when the waters of a river overflow due to rain and occupy the area next to the river, called the river plain. It can have natural or anthropogenic causes and affect vulnerable populations more often.
<h3>What is Biotic and Abiotic?</h3>
The biotic components are all the living things that live in a certain place, while the abiotic components are all the physical, chemical and geological factors of the environment such as water, light, soil, humidity, temperature, nutrients etc.
With this information, we can conclude that A flood can wash away important abiotic factors, such as soil and rocks, that certain biotic factors need to survive, thus flooding affects the ecology of affected regions.
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Answer:
Some of the similarities between the planet Uranus and Neptune are:
- Both the planets have many similarities in their internal structures.
- The internal structure of both the planets is made up of water, ammonia gas and methane gas.
- Both Uranus and Neptune have an Earth- sized solid center.
- The atmosphere of both the planets comprises of the gases, hydrogen, helium and methane.
- Due to the presence of methane gas, both the planet Uranus and Neptune have the same blue colour.
