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BSC1010 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024/2025 R172,37   Add to cart
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BSC1010 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024/2025
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BSC1010 EXAM 2 QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST UPDATE 2024/2025 What is the Plasma Membrane made of? amphipathic phospholipids, other lipids, and proteins How does cholesterol help the PM cholesterol can help keep the membrane maintain the right fluidity periphe...

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  • September 22, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • bsc1010 exam 2 questions and answers with complete

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BSC1010 EXAM 2 QUESTIONS AND ANSWERS WITH

COMPLETE SOLUTIONS VERIFIED LATEST UPDATE

2024/2025


What is the Plasma Membrane made of?


amphipathic phospholipids, other lipids, and proteins


How does cholesterol help the PM


cholesterol can help keep the membrane maintain the right fluidity


peripheral protein


bound to the surface of the membrane


integral protein


penetrate the hydrophobic core


transmembrane proteins and seven-spanning and what type of protein


integral protein


six major functions of membrane proteins


transport

enzymatic activity

signal transduction

, cell-cell recognition

inter-cellular joining

attachment


Hydrophobic (nonpolar) molecules


dissolve in lipid bilayer and pass through membrane easily

ex: hydrocarbons, 02 and CO2


Hydrophilic molecules


do not cross the membrane easily

ex: ions and polar molecules


aquaporins


transport protein that is also a channel protein; facilitates passage of water


passive transport


diffusion of a subs across aa biological membrane; no energy needed

ex: osmosis


active transport


moves substances against their conc. gradient; requires energy in the form of ATP

ex: sodium-potassium pump


osmosis


diffusion of H2O across selectively perm. membrane


concentration gradient

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