18.) Eukaryotic cells are approximately A. 10μm - 100μm B. 1mm - 10mm C. 1μm - 10μm D. 100nm-1mm E. 0.1um- 10μm 19. A fluid with a pH of 3 is A. neutral B. a hypotonic solution C. a hypertonic solution D. a base E. an acid 20. The atomic number is A. the number of atoms that are available to react B. the number of neutrons in in the nucleus of that atom C. the number of protons plus neutrons D. the number of elements in the nucleus of that atom E. the number of protons found in the nucleus of that atom in diameter. 21. The second law of thermodynamics includes: A. the relation of atomic number to atomic mass B. the concept of entropy C. the concept of space-time D. the conservation of energy E. the theory of evolution 22. (In REDOX reactions of organic molecules, electrons travel with A. Hydrogens B. Carbons C. Oxygens D. Nitrogens E. neutrons

18.) Eukaryotic cells are approximately A. 10μm - 100μm B. 1mm - 10mm C. 1μm - 10μm D. 100nm-1mm E. 0.1um- 10μm 19. A fluid with a pH of 3 is A. neutral B. a hypotonic solution C. a hypertonic solution D. a base E. an acid 20. The atomic number is A. the number of atoms that are available to react B. the number of neutrons in in the nucleus of that atom C. the number of protons plus neutrons D. the number of elements in the nucleus of that atom E. the number of protons found in the nucleus of that atom in diameter. 21. The second law of thermodynamics includes: A. the relation of atomic number to atomic mass B. the concept of entropy C. the concept of space-time D. the conservation of energy E. the theory of evolution 22. (In REDOX reactions of organic molecules, electrons travel with A. Hydrogens B. Carbons C. Oxygens D. Nitrogens E. neutrons

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter5: Membranes And Transport

Section: Chapter Questions

Problem 3TYK: The freeze-fracture technique demonstrated: a. that the plasma membrane is a bilayer with individual...

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5. Intravenous solutions must be prepared, to that they are isotonic to red blood cells. A0.9% salt solution is isotonic to red blood cells. Keeping this in mind, explain whatwould happen to a red blood cell placed into a solution of 99.3% water and 0.7% salt.Note to obtain full marks you must care both the intercellular environment to theextracellular environment (solute vs solvent).
Compound Sodium Lactate is isotonic solution. this mean that it a. reduces movement of sodium across the membrane b.prevent movement of water across the semi permerable cell membrane c. promotes movement of water out of the cell d. facilitates equal movement of water across the semi permerable cell membrane
A red blood cell (300 mOsm/L) is placed in a solution of 100 mM NaCl + 100 mM glucose. Is the solution best described as Hypotonic, Isotonic or Hypertonic? Explain your answer
4. The diagram below illustrates a red blood cell in three different solutions. Identify eachsolution as being hypertonic, hypotonic or isotonic.
2. Unlike soluble, cytosolic proteins, transmembrane proteins are more difficult to purify, Which of the following substances is most used to help purify a transmembrane protein? a. high salt solution b. sucrose c. detergent d. ethanol e. glucose
1. It can separate large colloidal particles from small solute particles of a solution. a. Dialysis b. Facilitated diffusion c. Osmosis d. Diffusion 2. What force of interaction was cleaved in the addition of a reducing agent to the protein sample? a. Disulfide bonds b. hydrogen bond c. hydrophobic interactions d. ionic bond 3. The substance in the vinegar that dissolved the egg shell. a. calcium acetate b. calcium carbonate c. water d. acetic acid 4. As enzyme concentration increases, enzymatic activity increases provided the substrate concentration is constant. True or False 5. Diffusion is the separation of smaller molecules from larger molecules using a semi-permeable membrane. True or False
10)You observe a cell in a solution swelling until it bursts. You have seen an instance of osmosis in Select one: a. a hypertonic solution. b. an isotonic solution. c. a hypotonic solution. d. an exotonic solution.
Thinking about different osmotic conditions, which of the following statements is NOT true. Select one: a.If a cell contained 98% water and was placed into a solution of 100% water, water would flow into the cell. b.Under hypertonic conditions a bacterial cell would still look whole and intact under a light microscope c.None of the Above d.Based on their cell wall, one would expect a gram positive bacteria to lyse before a gram negative in extreme hypotonic solutions. e.A red blood cell will quickly lyse under hypotonic conditions compared to a bacterial cell
The clear, structureless gel in a cell is its a. nucleoplasm. d. neoplasm. b. endoplasm. e. cytosol. c. cytoplasm
When an animal cell is placed on an isotonic solution, water molecules will A) Move out of the cell, resulting in shrinkage B) move into the cell until it bursts C) move into and out of the cell at equal rates D) stop moving need help for this, thanks
Whether in a gas, a liquid, or a semisolid, diffusion always occurs a). at the same rate. b). from high to low solute concentration. c). faster at lower temperaturesd). from low to high solute concentration.
A dehydrated runner drinks a lot of water after a race. His cells become rehydrated after drinking water because (a) The bloodstream is hypotonic compared to the contents of the digestive tract. (b) The contents of the digestive tract are hypotonic to the bloodstream. (c) The contents of the bloodstream and digestive tract are isotonic to each other. (d) Water will diffuse from a low concentration to a high concentration. (e) The contents of the digestive tract are hypertonic to the bloodstream. Explain your answer