Penn Foster Lesson 3 Essay Questions and Answers Graded A+
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Penn Foster Lesson 3 Essay
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Penn Foster Lesson 3 Essay
Penn Foster Lesson 3 Essay Questions
and Answers Graded A+
What are the primary functions of the cell membrane?
To protect the cell, regulate the movement of substances in and out, and facilitate
communication with other cells.
Describe the role of mitochondria in cellular respiration.
...
Penn Foster Lesson 3 Essay Questions
and Answers Graded A+
What are the primary functions of the cell membrane?
✔✔ To protect the cell, regulate the movement of substances in and out, and facilitate
communication with other cells.
Describe the role of mitochondria in cellular respiration.
✔✔ Mitochondria are the sites where cellular respiration occurs, producing ATP by converting
glucose and oxygen into energy, carbon dioxide, and water.
Explain how enzymes impact biochemical reactions.
✔✔ Enzymes lower the activation energy required for biochemical reactions, speeding up the
rate at which these reactions occur without being consumed in the process.
What is the significance of the DNA structure in genetic inheritance?
✔✔ The double-helix structure of DNA allows for the accurate replication and transmission of
genetic information from one generation to the next.
1
, Describe the main stages of the cell cycle and their significance.
✔✔ The cell cycle includes Interphase (G1, S, G2) where the cell grows and DNA is replicated,
and the Mitotic phase (Mitosis and Cytokinesis) where the cell divides into two daughter cells,
ensuring proper cell replication and function.
How do plants and animals differ in their methods of energy production?
✔✔ Plants produce energy through photosynthesis by converting sunlight into glucose, while
animals obtain energy by consuming other organisms and breaking down glucose through
cellular respiration.
Explain the process of osmosis and its importance to cell function.
✔✔ Osmosis is the diffusion of water across a semipermeable membrane from an area of lower
solute concentration to an area of higher solute concentration, crucial for maintaining cell turgor
and proper function.
What are the differences between prokaryotic and eukaryotic cells in terms of structure and
function?
✔✔ Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells
have a nucleus and organelles, allowing for more complex functions and processes.
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