Question

21. The ______ prevents plants cells from bursting when place in a ____ solution. a) centrioles-hypotonic b) chloroplasts-hypertonic c) plasma membrane-hypertonic d) vacuole-hypertonic e) cell wall-hypotonic

22. Specialized cells like your own lung cells each lack which of the following organelles which are commonly found in an onion. a) cell membrane b)cell wall c)ribosomes d)nucleolus e) none of the above ______

23. White blood cells engulf and destroy foreign particles by a process known as phagocytosis which is actually a) diffusion b) endocytosis c)pinocytosis d)exocytosis e)none of the above

24. Potato cells placed in seawater (3.5% NaCl) will a)lose water and become flaccid b)take up water and burst c) take up water and become flaccid d)become impermeable eliminating water gain or lose e)lose water and become turgid

25. Detection of the odor from your neighbor's barbecue picnic a five house down the street is due to a)transport of molecules utilizing a carrier molecule without the expenditure of energy b)the random movement of particles from a region of high concentration c)equal concentration of solutes on both sides of a membrane d) neither of the above is true e)none of the above

26.ATP is a high energy compound because _____ is easily removed because of ______ a)deoxyribose-hydrolysis using water b)phosphate-high negative charges c)ribose-condensation reactions d)protein-denaturation e)none of the above

27. Newly formed polypeptide chains that ultimately become components of the cell membrane are synthesized and released in the a)nucleus b)lysosome bb) Golgi apparatus c) endoplasmic reticulum d)all of the above e)none of the above

28. In aqueous solutions, vinegar releases hydrogen ions, therefore the pH will be ____ than 7.0 a)higher b)lower c)has no effect d)either of the above e)none of the above

29. Detection of the odor of Renuzit or perfume is due to a_ transport of molecules utilizing a carrier molecule without the expenditure of energy b) the random movement of particles from a region of high concentration c)equal concentration of solutes of the membrane d)neither of the above is true e)all the above is true

31. A single-celled freshwater organism is placed in a jar containing ocean saltwater. What will happen to the cell? a)water will leave the cell b)it will remain the same c)water will enter the cell d)salts will enter the cell

32. A human liver cell and plant cell from the cortex of a root are both placed in a beaker of distilled water. What will probably happen? a) the liver cell will swell and may even burst; the plant will become turgid. b) the liver cell will shrivel; the plant cell will become very turgid c) the liver cell will swell; the plant cell will become flaccid (flexible) d)both cells will be in osmotic balance

33. Cells of the American Rose are held together by the a) cellulose fibers b)middle lamella c)primary cell wall d)cell membrane e) none of the above

34.the concentration of potassium is much high in red blood cells than it is in the surrounding plasma, yet potassium continues to move into the cell. The process by which potassium moves into the cell is called a)osmosis b)facilitated diffusion c)active transport d)diffusion e)none of the above

35. Soaking if black-eyed peas overnight before cooking results in ____ due to the process of ____ a)shrinkage-diffusion b)swelling-osmosis c)turgidity-plasmolysis d)neither of the above

36. Intravenous infusion of medication to a patient is the hospital may be done using 0.87% saline. this solution is often used because it is ____ to the cells of the human body. a)hypertonic b)hypotonic c)isotonic d)neither of the above

37. A change in the primary structure of a protein often results in a) a change in tertiary structure b)a change in biological function c)a change in the alpha helix d)all of the above e) none of the above

Answer 1