Multiple Choice
Aquifers are _______.
16
views
1. Introduction to Biology
Introduction to Biology
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following best describes the primary function of the plasma membrane in eukaryotic cells?
A
It synthesizes proteins for the cell.
B
It regulates the movement of substances into and out of the cell.
C
It produces ATP through cellular respiration.
D
It stores genetic information.
Verified step by step guidance1
Understand the structure and composition of the plasma membrane: The plasma membrane is primarily composed of a phospholipid bilayer with embedded proteins, cholesterol, and carbohydrates. This structure is crucial for its function.
Recognize the primary function of the plasma membrane: The plasma membrane acts as a selective barrier, regulating the movement of substances into and out of the cell. This ensures the cell maintains homeostasis.
Eliminate incorrect options: Protein synthesis occurs in ribosomes, not the plasma membrane. ATP production is a function of mitochondria, and genetic information is stored in the nucleus, not the plasma membrane.
Focus on the correct option: The plasma membrane's selective permeability allows it to control the exchange of ions, nutrients, and waste products, which is essential for cell survival.
Relate the function to biological processes: The plasma membrane uses mechanisms like passive transport (diffusion, osmosis) and active transport (using energy) to regulate substance movement, ensuring the cell's internal environment remains stable.
1:28mWatch next
Master Introduction to Biology Channel with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Introduction to Biology practice set
Problem sets built by lead tutorsExpert video explanations