Question 4 Match each term with the appropriate description. Terms may not be matched at all or may be matched more than once. inhibit further growth of ice crystals allow supercooling 1. Glucose focal point for ice crystal formation 2. Glycerol 3. ice nucleating agent accumulates to protect cell membranes 4. antifreeze proteins limits osmotic imbalance when ice forms in extracellular spaces > >
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- ntity_Sound+of+Waves (1) x S Forrar (wrap) y decorar tu libre S Schoold A districtims.seattleschools.org/common-assessment-delivery/start/5398502362?action3Donresume&submissionld%=657119921 Concentration, Osmosis, and Cell Environments HW Quiz Assume that the picture below shows environments on two sides of a selectively permeable membrane. Assume the light blue circles are wa molecules. Assume the red circles are glucose molecules. Which side has the higher concentration? water molecules will flow to the left water molecules will flow to the right water molecules will flow both ways, but mostly will flow to the right water molecules will flow both ways, but mostly will flow to the left water will flow to the left and glucose will flow to the right water will flow to the right and glucose will flow to the left Which best describes the way that the particles move?QUESTION 1 Gap junctions are involved in O endocrine none of the other choices O neural paracrine QUESTION 2 Potassium ions enter a cell by active transport, diffusion O diffusion, diffusion active transport, active transport O diffusion, active transport QUESTION 3 O altering transcription signaling. Compared to water-soluble signals, lipid-soluble signals are more likely to produce their effects on the target cell by: activating enzymes at the plasma membrane opening or closing ion channels QUESTION 4 and exit a cell by Opening potassium ion channels in a neuron will lead to the cell interior becoming: less negative, which is hyperpolarization less negative, which is depolarization more negative, which is hyperpolarization O more negative, which is depolarizationSolutes tend to diffuse from a region where they are _______ concentrated to an adjacent region where they are _______ concentrated. a. more, less b. less, more c. movement is independent of concentration
- 1 O2 influx _1 Ca2+ influx 3 K+ influx 2 Na+ efflux 1. simple diffusion _1. Na+ influx by itself 2. facilitated diffusion 1 CO2 efflux 3. primary active transport 2 glucose influx by itself 4. secondary active transport 6 steroid influx or efflux 5. endocytosis 3 Ca2+ efflux that consumes ATP 6. eхосytosis 6 efflux of extracellular proteins 4 Na+ influx that occurs with other substances 2 K+ efflux8. Define homeostasis. maintoining nterral balance 9. What role does the cell membrane play in maintaining homeostasis? 10. How is facilitated diffusion different from diffusion? How are they similar? 11. List two ways that active transport is different than passive transport. 1) 2) 12. Why is the sodium-potassium pump considered an active transport? Which direction are the sodium and potassium bing pumped? How many sodiums are being pumped? How many potassiums are being pumped?Left Compartment Right Compartment 7 grams of Z per liter solution 4 grams of XY per liter of solution total volume = 1 liter. total volume = 1 liter Solute Z has a molecular weight of 20 (non-dissociable) Solute XY has a molecular weight of 10 (dissociates into X+ and Y-) 1. If the membrane is impermeable to all solutes, and there are 7 g/l of solute in the left compartment, what concentration of XY (g/l) in right compartment would make the solutions isotonic?
- O O 8:12 r cdn.fbsbx.com Receptor-mediated endocytosis A specific receptor protein on the plasma membrane recognizes an extracellular molecule and binds with it. a. Describe the net movement of water by drawing arrows on the diagram. (3 points each) b. Tell whether the solutions are isotonic, hypertonic or hypotonic. Label each picture. (3 points each) c. What kind of transport is shown in the diagram above? Is it active or passive transport? Explain why? (10 points) d. What will happen to cells "A", "B" and "C" after a period of time has passed? (3 points each) 60% water 40% salt The reaction stimulates the membrane to indent and create a vesicle containing the selected molecule. 40% water 60% salt SEAT WORK 40% water LTE 70% water 30% salt 80% water 20% salt Done 70% water 30% salt 70% water 30% salt 9Moving to another question will save this response. Question 3 Look at the figure below and you will notice that cellular contents are being released at the plasma membrane of the cell. Name this transport mechanism. O vesicular transport O primary active transport O secondary active transport O antiport system Moving to another question will save this response. MacBook Pro @ 2 esc 1 Q W #3 E S4 $ 4 R Search or type URL % 6 5 T & Ydecor isLhetims.seattleschools.org/common-assessment-delivery/start/5398502362?action3Donresume&submissionld%=657119921 Concentration, Osmosis, and Cell Environments HW Quiz For each of the drawings, label what kind of environment it is in, how you know this, and what is happening to the cell. This cell is in a isotonic v solution. I know this because This cell will More water is coming in than going out More water is going out than coming in The same amount of water is going out and coming in
- Kindly answer 8, 9, 9 and 108. The biochemical function for the cholesterol present in cell membranes isa. Cell recognitionb. Regulate membrane rigidityc. Impart polarity to the interior membraned. Prevent tight packing of fatty acid chains9. Passive transport mechanism requires both the aid of proteins and the expenditure of cellular energy. While Facilitated and Active mechanism both needs protein in order to transport drugs or ions across a membrane channel. Water transporta. Both statements are INCORRECTb. Neither is CORRECTc. Only the 1st statement is INCORRECTd. Only the 2nd statement is CORRECT9. Which of the following membrane transport mechanism requires both the aid of proteinsand the expenditure of cellular energy?a. Water transportb. Active transportc. Passive transportd. Facilitated transport10. Which of the following types of membrane lipids has steroid structure?a. Cholesterolb. Globosidesc. Triacylglycerold. SphingoglycolipidsMultiple Choice The apparatus shown was set up. Some hours later, the water in the beaker had turned blue, and the liquid in the glass tube had moved upwards. Which processes caused these changes? 2 attachments glass tube Which processes caused these changes? water turned blue liquid in glass tube moved upwards sugar solution and blue ink pure water A osmosis diffusion partially permeable membrane active transport osmosis diffusion active transport diffusion osmosis A B Ditences or clauses with complete thought. ng table. Make sure that your Table 23: Effect of Osmosis on Red Blood Cells Concentration of Concentration of Internal Environment Solute Outside the Cell Water Inside the Inside the Outside Effect on the Cell Cell Cell the Cell Hypertonic Hypotonic I sotonic Facilitated Diffusion OUa to be aided by transport proteins whenever they cross the cell membran of protein-assisted passive transport is calle nhonnels th Since ions and polar molecules cannot diffuse freely through the phospholipid bilayer, hy dre