Lipid bilayers - Study guides, Class notes & Summaries

are enzymes that catalyze the synthesis of RNA using a DNA template. Correct Answer-RNA polymerases Outside of the plasma membrane, plant cells are surrounded by a cell wall that is mostly composed of Correct Answer-cellulose is the organelle that is the site of photosynthesis in plants. Correct Answer-chloroplast The cytoskeleton of eukaryotic cells is composed primarily of three types of protein fibers - intermediate filaments, actin filaments, and Correct Answer-microtubules Cells...

Portage Learning CHEM 210 exams 1-8 and final exam Question 1 3 / 3 pts True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule. True Correct! False Question 2 3 / 3 pts True or False: Biomolecules can have only two functional groups. True Correct! False Question 3 3 / 3 pts True or False: The following functional group is an alcohol. True Correct! False Question 4 3 / 3 pts True or False: In ...

IB 150 Final Exam Questions and Answers 100% Pass How do competitive and non-competitive inhibitors affect enzyme activity? Competitive inhibitors block the active site of an enzyme, while non-competitive inhibitors bind to an enzyme elsewhere, reducing its activity regardless of substrate concentration. What adaptations allow desert plants to conserve water? Desert plants have adaptations like thick cuticles, deep root systems, and specialized leaves to minimize water loss and stor...

Test Bank For Advanced Nutrition and Human Metabolism 8e Sareen Gropper, Jack Smith, Timothy Carr-1. Membrane lipid bilayers consist primarily of . a. phospholipids b. cholesterol c. proteins d. saturated fatty acids e. enzymes 2. Which of the following is a common function of membrane proteins? a. receptors b. detoxifiers c. purifier d. neutron transporter e. storage proteins 3. What is the role of cholesterol in plasma membrane structure? a. to produce bile b. to regulate fluidit...

How does hypoalbuminemia affect the process of prescribing? - Low albumin = more free drug (bc the drug can't bind to albumin aka protein) = increased adverse effects What is a Black Box Warning: - is considered a contraindication to administer that drug. What is the drugs half-life? - Half-life specifically means the amount of time it takes for an administered drug to be halfway cleared from the system. Peak of action: - the time between drug administration and maximum concentration of drug...

BCH 369 TEST 3 QUESTIONS WITH ALL ANSWERS CERTIFIED Which of the following accurately describes the lipid bilayer in biological membranes? A) The bilayer is stabilized by hydrophilic interactions between the polar lipid head groups and the aqueous environment. B) Integral membrane proteins enhance the stability of membrane lipid bilayers. C) The thickness of membrane bilayers varies slightly, depending on the fatty acids incorporated in the lipids. D) Individual lipid molecules flip-flop r...

a biological molecule that is soluble in nonpolar solvents but poorly soluble in water correct answers What is a *lipid*? those with distinct polar and nonpolar regions correct answers What are *amphiphilic* molecules? single bonds correct answers A *saturated fatty acid* contains only which bonds between carbon atoms? cis conformation correct answers C-C double bonds in a fatty acid chain are usually in which conformation? no correct answers Do triacylglycerols form a bilayer? gl...

Phospholipid Bilayer Phospholipid - correct answer consists of a somewhat circular phosphate group head, and two long , fatty acid chain tails Hydrophilic Head - correct answer Its attracted to water and arranged to be closest to the water molecules Hydrophobic Tail - correct answer Are repelled by water and arranged to be farthest from water molecules Carbohydrate Chain - correct answer substance on the plasma membrane helps identify chemical signals from outside the cell and define c...

Adipose tissue vs skeletal muscle - ️️Adipose: - ~ 90% lipids, small fraction of water Skeletal: - ~75% water ~18% protein Cell membrane (plasma membrane) - ️️- double layer (lipid bilayer) with phospholipids and protein molecules inserted in them - Carbohydrates are attached to extracellular side Sphingolipid chemical composition and function - ️️- sphingosine backbone with fatty acid tail, as well as possible cholines, sugars, attached. -Longer than phospholipids - act a...

BHS 329 Chapter 2 Test with Complete Solutions Plasma membrane - Answer-surrounds cell creating a barrier that separates intracellular components from extracellular environment surrounding it. The plasma membrane has how many layers? - Answer-Bilayers (2) Lipid bilayer of plasma membrane - Answer-Made of phospholipids(PO4- bound to lipid) Phospholipid structure - Answer-Phosphate attaches to lipid is called the head(hydrophilic/polar) and the lipid structure is the tail(hydrophobic/n...