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BIO 201- Exam 1- Ch. 1-6- Rio Salado Questions and Answers Already Passed
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BIO 201- Exam 1- Ch. 1-6- Rio Salado Questions and Answers Already Passed What is the basic unit of life in all living organisms? The basic unit of life in all living organisms is the cell. What is the function of ribosomes in a cell? Ribosomes are responsible for protein synthesis in ...

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  • September 6, 2024
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BIO 201- Exam 1- Ch. 1-6- Rio Salado
Questions and Answers Already Passed
What is the basic unit of life in all living organisms?


✔✔ The basic unit of life in all living organisms is the cell.




What is the function of ribosomes in a cell?


✔✔ Ribosomes are responsible for protein synthesis in a cell.




What is the role of mitochondria in eukaryotic cells?


✔✔ Mitochondria are known as the powerhouses of the cell, as they produce energy in the form

of ATP through cellular respiration.




What is the purpose of the cell membrane?


✔✔ The cell membrane controls the movement of substances in and out of the cell, maintaining

homeostasis.




What are the four main types of macromolecules found in cells?




1

,✔✔ The four main types of macromolecules are carbohydrates, lipids, proteins, and nucleic

acids.




What is the difference between prokaryotic and eukaryotic cells?


✔✔ Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells

have a nucleus and membrane-bound organelles.




What is the central dogma of molecular biology?


✔✔ The central dogma of molecular biology is that genetic information flows from DNA to

RNA to protein.




How do enzymes function as biological catalysts?


✔✔ Enzymes function by lowering the activation energy required for a chemical reaction, thus

speeding up the reaction.




What is the significance of the fluid mosaic model in cell membrane structure?


✔✔ The fluid mosaic model describes the cell membrane as a flexible structure with a mosaic of

various proteins floating in or on the fluid lipid bilayer.




2

, What are the primary functions of the endoplasmic reticulum?


✔✔ The endoplasmic reticulum is involved in the synthesis of proteins (rough ER) and lipids

(smooth ER), as well as the processing and transport of these molecules.




How does passive transport differ from active transport in cells?


✔✔ Passive transport does not require energy and moves substances along their concentration

gradient, while active transport requires energy to move substances against their concentration

gradient.




What is the role of lysosomes in a cell?


✔✔ Lysosomes contain digestive enzymes that break down waste materials and cellular debris.




What is a gene?


✔✔ A gene is a segment of DNA that contains instructions for building proteins and determining

specific traits.




How do cells replicate their DNA before cell division?


✔✔ Cells replicate their DNA through a process called DNA replication, where the double helix

unwinds and each strand serves as a template for a new complementary strand.

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