Penn Foster Biology; Unit 3 Part 1 Questions and Answers Already Passed
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Course
Penn Foster Biology; Unit 3
Institution
Penn Foster Biology; Unit 3
Penn Foster Biology; Unit 3 Part 1
Questions and Answers Already Passed
What is the primary function of the cell nucleus?
To store genetic material and control cellular activities.
What is the role of the endoplasmic reticulum in a cell?
To synthesize and transport proteins and lipids.
...
Penn Foster Biology; Unit 3 Part 1
Questions and Answers Already Passed
What is the primary function of the cell nucleus?
✔✔ To store genetic material and control cellular activities.
What is the role of the endoplasmic reticulum in a cell?
✔✔ To synthesize and transport proteins and lipids.
What are the two main types of endoplasmic reticulum, and how do they differ?
✔✔ Rough ER has ribosomes on its surface and synthesizes proteins, while Smooth ER lacks
ribosomes and is involved in lipid synthesis and detoxification.
What is the function of the Golgi apparatus in the cell?
✔✔ To modify, sort, and package proteins and lipids for delivery to different destinations.
How do mitochondria contribute to cellular energy production?
✔✔ By producing ATP through the process of cellular respiration.
1
, What is the purpose of the lysosomes in the cell?
✔✔ To digest and break down waste materials and cellular debris.
What is the structure and function of the cell membrane?
✔✔ The cell membrane is a phospholipid bilayer with embedded proteins that controls the
movement of substances in and out of the cell.
How do ribosomes contribute to protein synthesis?
✔✔ Ribosomes translate mRNA into amino acid sequences, forming proteins.
What is the role of the cytoskeleton in the cell?
✔✔ To provide structural support, facilitate movement, and organize cell components.
What is the significance of the central vacuole in plant cells?
✔✔ It helps maintain cell turgor pressure and stores nutrients, waste products, and pigments.
What is the function of chloroplasts in plant cells?
2
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