LIFSCI 7C XL - PEQ Week 1 Questions
and Answers Graded A+
Question: What is the primary focus of LIFSCI 7C XL - PEQ Week 1?
Answer: The primary focus is on understanding fundamental concepts of biological
sciences, including cell biology, genetics, and the basic mechanisms of life processe...
LIFSCI 7C XL - PEQ Week 1 Questions
and Answers Graded A+
Question: What is the primary focus of LIFSCI 7C XL - PEQ Week 1?
Answer: ✔✔ The primary focus is on understanding fundamental concepts of biological
sciences, including cell biology, genetics, and the basic mechanisms of life processes.
Question: What are the key components of a cell that students should identify in Week 1 of
LIFSCI 7C XL?
Answer: ✔✔ Key components include the nucleus, mitochondria, endoplasmic reticulum, Golgi
apparatus, and plasma membrane.
Question: How does the structure of the plasma membrane contribute to its function?
Answer: ✔✔ The plasma membrane's structure, consisting of a phospholipid bilayer with
embedded proteins, allows selective permeability, which regulates the movement of substances
in and out of the cell.
Question: What role do mitochondria play in cellular metabolism?
Answer: ✔✔ Mitochondria are responsible for producing ATP through cellular respiration,
which provides energy for various cellular processes.
1
, Question: Describe the process of protein synthesis and its significance in cellular function.
Answer: ✔✔ Protein synthesis involves transcription of DNA into mRNA, followed by
translation of mRNA into a polypeptide chain at the ribosome. This process is crucial for
producing proteins that perform a variety of functions in the cell.
Question: How does the endoplasmic reticulum contribute to protein and lipid synthesis?
Answer: ✔✔ The endoplasmic reticulum (ER) synthesizes proteins in the rough ER, which has
ribosomes attached, and lipids in the smooth ER, playing a key role in cell metabolism and
growth.
Question: What are the differences between prokaryotic and eukaryotic cells discussed in Week
1?
Answer: ✔✔ Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic
cells have a defined nucleus and organelles such as mitochondria and the endoplasmic reticulum.
Question: Why is understanding cellular transport mechanisms important in cell biology?
Answer: ✔✔ Cellular transport mechanisms, such as diffusion and active transport, are essential
for maintaining homeostasis by regulating the movement of ions, nutrients, and waste products
in and out of the cell.
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