Concentration gradients - Study guides, Revision notes & Summaries

AQA A LEVEL BIOLOGY Paper 1 2024 What is the function of the cell membrane? - ANS To control what enters and leaves the cell, acts as a barrier between the cell and its environment. What structural feature of the cell membrane allows substances to enter/leave? - ANS Partially permeable What is the fluid mosaic model? - ANS States that a membrane is a fluid structure (because phospholipids are constantly moving) with a "mosaic" of various proteins embedded in it Describe the...

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Detailed biology essay plans for AQA A-Level [Paper 3]. Essay titles include: - THE IMPORTANCE OF ORGANISMS BEING ABLE TO RESPOND TO THEIR INTERNAL AND EXTERNAL ENVIRONMENTS -IMPORTANCE OF ENERGY TRANSFERS WITHIN AND BETWEEN ORGANISMS - IMPORTANCE OF TRANSFERS OF SUBSTANCES WITHIN ORGANISMS & BETWEEN ORGANISMS AND THEIR ENVIRONMENT - CELLS & ORGANISMS CARRY OUT EXCHANGES WITH THEIR EXTERNAL ENVIRONMENT TO MAINTAIN THEIR INTERNAL ENVIRONMENT - THE IMPORTANCE OF MICROORGANISMS/ BACTERIA IN B...

Of the following functions, which is most important for the glycoproteins and glycolipids of animal cell membranes? A)facilitated diffusion of molecules down their concentration gradients B)active transport of molecules against their concentration gradients C)maintaining the integrity of fluid mosaic membrane D)maintaining membrane at low temperatures E)a cell's ability to distinguish one type of neighboring cell from another - Answer-E)a cell's ability to distinguish one type of neighb...

TEST BANK FOR Pathophysiology The Biologic Basis For Disease in Adults and Children 9th Edition By McCance & Huether Complete All Chapters 1-50 () Which statement best describes the cellular function of metabolic absorption? a. Cells can produce proteins. b. Cells can secrete digestive enzymes. c. Cells can take in and use nutrients. d. Cells can synthesize fats. ANS: C In metabolic absorption, all cells take in and use nutrients and other substances from their surroundings. The remaining...

GMS 6440 Problem Set 2 Voltage and Concentration Gradients Exam questions and answers.

GMS 6440 Problem Set 2 Voltage and Concentration Gradients Exam questions and answers.

Fluid and Electrolytes Correct Answer-necessary for life, homeostasis anticipate, identify, and respond to possible imbalances Correct Answer-nursing role for fluid and electrolyte balance 60 Correct Answer-approximately __% of typical adult is fluid (water and electrolytes) Osmosis Correct Answer-the diffusion of water caused by fluid and solute concentration gradients. - area of low concentration to area of high solute concentration. a higher concentration of extracellular sodiu...

BIO 201 Arizona College of Nursing Mid Term Study Guide Rated A+ What key event occurs during prophase of mitosis? During prophase, chromatin condenses into visible chromosomes, and the nuclear envelope begins to break down, setting the stage for chromosome alignment. How do the properties of water support life on Earth? Water’s unique properties, such as high specific heat, cohesion, and solvent abilities, facilitate biochemical reactions and help regulate temperature in living o...