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Penn Foster Biology Book 1 Questions And Answers Already Passed
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Penn Foster Biology Book 1 Questions And Answers Already Passed What is the difference between prokaryotic and eukaryotic cells in terms of genetic material? Prokaryotic cells have their genetic material free-floating in the cytoplasm, while eukaryotic cells have it enclosed within a nucle...

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  • September 6, 2024
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  • 2024/2025
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Penn Foster Biology Book 1 Questions
And Answers Already Passed
What is the difference between prokaryotic and eukaryotic cells in terms of genetic material?


✔✔ Prokaryotic cells have their genetic material free-floating in the cytoplasm, while eukaryotic

cells have it enclosed within a nucleus.




How do enzymes lower the activation energy of a reaction?


✔✔ By providing an alternative reaction pathway with a lower energy requirement.




What role do mitochondria play in cellular metabolism?


✔✔ They are involved in producing ATP through aerobic respiration.




How does the fluid mosaic model describe the cell membrane?


✔✔ It depicts the membrane as a dynamic structure with proteins and lipids moving freely

within a bilayer.




What is the significance of the semi-permeable nature of the cell membrane?


✔✔ It allows the selective passage of substances, maintaining internal cell conditions.


1

, What is the main function of the cell's cytosol?


✔✔ To provide a medium for biochemical reactions and support organelles.




What process is responsible for the synthesis of RNA from a DNA template?


✔✔ Transcription




How do plant cells store energy?


✔✔ In the form of starch, a polysaccharide.




What is the role of the extracellular matrix in animal tissues?


✔✔ To provide structural support and regulate cell behavior.




What is the role of the small nuclear ribonucleoproteins (snRNPs) in eukaryotic cells?


✔✔ To participate in the splicing of pre-mRNA.




What is the purpose of the G1 phase in the cell cycle?


✔✔ To allow the cell to grow and perform normal functions before DNA replication.

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