Because most waste produced in the cell is toxic when it accumulates.
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Hairpin like structures are formed in both DNA and RNA but are common in RNA than in DNA. This is because DNA can be double stranded or single stranded while RNA is generally single stranded structure that can be double stranded only when it forms a hair pin like structure.
The features of hairpin structure in RNA are as follows:
1. This structure is a building block of many secondary structures of RNA.
2. The termination sequence during transcription also forms a hairpin loop like structure.
3. tRNA also forms a hairpin loop like structure and helps in the process of translation.
Explanation:
Hey, there!
The eco-system consists of various type of organisms in tge ecosystem. The all type of organism as producer, decomposer, consumers live in ecosystem.
Three adaptations of organism are:
- By losing and gaining of organs: Some of the animals lose their organs to survive in some places like yak have more hair to survive in cold places.
- By changing the colour of body: Some animals such as grasshopper changes their colour to survive in places.
- By modification of organs: some animals modify their organs to survive such as legs and beak of ducks are modified to survive in swim and search foods.
The importance of adaptation are:
- It helps organism to live a longer life.
- The adaptation helps to make an organism fittest to any environment.
- The adaptation helps an organism to search foods and live their life.
<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
Answer:
cellular membranes
Explanation:
Cellular membranes are selectively permeable because they allow only certain molecules to cross into and out of the cell. The phospholipid bilayer is a selectively permeable membrane that surrounds all biological cells. The movement of molecules across the cell membrane bilayer can occur by passive transport (does not require energy) or active transport (requires energy). For example, water molecules pass passively through the cell membrane (passive transport), while other molecules pass through transmembrane proteins against a concentration gradient (active transport).
