Concentration gradients Study guides, Revision notes & Summaries

d. Movement of sodium and potassium across the cell membrane against their concentration gradients. 2. B. A hypothesis 3. This study source was downloaded by from CourseH on :33:46 GMT -06:00 D. urea 4. 5. Carbon has an atomic number of 6. Which of the following is true about isotope c-12? a. C-12 possesses 6 neutrons and 6 protons in its nucleus b. C-12 possesses 7neutrons and 5 protons in its nucleus c. C-12 possesses 7 neutrons and 5 protons in its nucleus ...

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 neighbor...

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...

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.

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...

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

BIO 100 EXAM 2 LATEST VERSION GRADED A+ LECTURE#6 Cell Communication **What is the role of the plasma membrane in a cell?** The plasma membrane acts as the "gatekeeper" of the cell, separating it from its environment and regulating the passage of molecules. It is composed of a hydrophobic phospholipid bilayer that allows small and hydrophobic molecules to pass through. **What are concentration gradients in cellular context?** Concentration gradients refer to the differences in...

What direction does sodium want to flow? Potassium? Correct Answer-Sodium: Wants to flow *into* cell Potassium: Wants to flow *out* of cell Which ion has the largest gradient? What direction will it want to flow? Correct Answer-Calcium has a huge gradient and will go down gradient *into* the cell if possible. What is a membrane potential? What is the relative charge difference between the outside and inside of a cell? Correct Answer-Voltage difference across their plasma membranes. The in...

Bio 161 Exam 2- Penn State Questions and Answers Already Passed Question 1: What is the definition of current in the context of physiology? - a. movement of ions - b. flow of charged particles - c. chemical reaction - d. electrical discharge - Answer: b. flow of charged particles Explanation: Current refers to the flow of charged particles, such as ions, from one point to another, driven by an electrical potential or voltage. Question 2: What term is used to describe an el...