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What two factors contribute to transport of molecules across the semi-permeable plasma membrane?

What two factors contribute to transport of molecules across the semi-permeable plasma membrane?

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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8:52 AM Thu Oct 6 < 5 TA ●●● RIBOSE PO PO LTE 82% PHOSPHATE GROUPS ADENOSINE 7. What is the molecule that carries energy from one reaction to another (energy carrier, or currency for energy)? ATP or adenosine Triphosphate. 8. Does it have a sugar molecule? what is the name of the sugar ? -Ribose 9. What does ATP hydrolysis mean? → on bottom of pages. 10. Enzymes are made of proteins (carbohydrate, proteins, and fats). 11. Enzymes are specific to each reaction (T/F). -True 12. Enzymes unravel their structure when the conditions such as heat would the water move. Concentration (of water). +: TAKE A TOUR concentrations change. 13. Unraveling the structure renders the enzymes useless, this unraveling leads to loss of its function. This process is called as denaturation. 14. In others words, the enzymes are very susceptible to changes in temp pH and substrate concentrations. agitation and Chemical action 15. If a protein-digesting enzyme works in stomach's acidic pH (pH 2), would it still work in small intestine where the pH changes to 7.8? Explain, If no, please explain why not? 16. What are the components of plasma membrane? (recall question) 50%. lipid and 50% protein by weight w of glycolipids and glycoproteins constituting 5 to 10% of the membrane mass. 17. What two factors contribute to transport of molecules across the semi-permeable plasma membrane? 18. What are the two types of transport mechanisms (broad classification): based on Concentration gradient -simple diffusion and facilitated diffusion a. b. Energy use-active transport and passive transport. 19. A molecule, which is small and non-polar such as O₂ or CO2, will likely cross the membrane via which transport f.d.____ (passive diffusion, facilitated diffusion or osmosis). 20. If a molecule such as glucose or Nat has to enter the cell, it will cross the membrane via fid. f. (passive diffusion, facilitated diffusion or osmosis). 21. If a membrane separates two solutions with different solute concentrations, which direction water always moves from an area of higher concentration (of water) to one of < 15 17 >
Transcribed Image Text:8:52 AM Thu Oct 6 < 5 TA ●●● RIBOSE PO PO LTE 82% PHOSPHATE GROUPS ADENOSINE 7. What is the molecule that carries energy from one reaction to another (energy carrier, or currency for energy)? ATP or adenosine Triphosphate. 8. Does it have a sugar molecule? what is the name of the sugar ? -Ribose 9. What does ATP hydrolysis mean? → on bottom of pages. 10. Enzymes are made of proteins (carbohydrate, proteins, and fats). 11. Enzymes are specific to each reaction (T/F). -True 12. Enzymes unravel their structure when the conditions such as heat would the water move. Concentration (of water). +: TAKE A TOUR concentrations change. 13. Unraveling the structure renders the enzymes useless, this unraveling leads to loss of its function. This process is called as denaturation. 14. In others words, the enzymes are very susceptible to changes in temp pH and substrate concentrations. agitation and Chemical action 15. If a protein-digesting enzyme works in stomach's acidic pH (pH 2), would it still work in small intestine where the pH changes to 7.8? Explain, If no, please explain why not? 16. What are the components of plasma membrane? (recall question) 50%. lipid and 50% protein by weight w of glycolipids and glycoproteins constituting 5 to 10% of the membrane mass. 17. What two factors contribute to transport of molecules across the semi-permeable plasma membrane? 18. What are the two types of transport mechanisms (broad classification): based on Concentration gradient -simple diffusion and facilitated diffusion a. b. Energy use-active transport and passive transport. 19. A molecule, which is small and non-polar such as O₂ or CO2, will likely cross the membrane via which transport f.d.____ (passive diffusion, facilitated diffusion or osmosis). 20. If a molecule such as glucose or Nat has to enter the cell, it will cross the membrane via fid. f. (passive diffusion, facilitated diffusion or osmosis). 21. If a membrane separates two solutions with different solute concentrations, which direction water always moves from an area of higher concentration (of water) to one of < 15 17 >
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