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- Which of the following scenarios describes the process of osmosis? a) An amoeba engulfs a food particle. b) Sodium ions flow through the cell membrane. c) A carrier protein moves glucose into the cell.. d) A plant cell swells in a hypotonic environment.When a Prokaryote or Eukaryotic cell is placed in an aqueous (water) solution containing K+ and Na+ ions, one would expect that a) the membrane protein pump would transport water b) the cell would swim away c) H2O would dissolve the membrane d) lipids would diffuse in and out of the cell through special membrane proteins e) K+ would be moved into the cell and Na+ would be moved outside of the cell membrane by special active transport proteins.Which statement among A - D is false? A) O Active transport processes allow a bacterium to maintain an ion gradient B) O Membrane permeant acids and bases can act as growth inhibitory agents towards bacteria. C) O Transport via group translocation results in modification of the incoming solute. D) O Bacteria tend to maintain their interior slightly hypertonic relative to the external environment. E) O None of A-D is false.
- 3. As the radius of a cell increases, which statement is true? Sphere surface area = A=4πr2 Sphere volume = V=4373 A) the surface area increases more than the cell volume increases B) the surface area and cell volume increase similarly C) the cell volume increases more than the surface area increases D) the surface area increases but the cell volume can go downWhen 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, thanksThe prokaryote cell type is associated with the following structures EXCEPT? a) ribosomes, b)mesosomes c)nucleoid area d) peroxisomes and liposomes e) chlorophyll and explain why?
- If a cell had a mutation in one of the proteins that encodes its exocytosis machinery, so that exocytosis was unable to be completed, then which of the following would be the consequence? A) This cell would not be able to move around B) This cell would not be able to glycosylate proteins C) This cell would not be able to release proteins into the extracellur space D) This cell would not be able to synthesize proteins ..All of the following are functions of vacuoles except a)temporary receptacles of nutrients B)store starch pig enemy's and toxic substances c)exert turgor on cell walls d collect pump excess water out of the cell E) break down toxic substancesA type of cell wall that is often toxic. Question options: a) gram-positive b) gram-negative c) acid-fast d) mycoplasma
- A cell is moved from its normal environment in a freshwater river and is suddenly placed into the ocean. What would be the effect of this change in environment on the cell? O 1) It would shrivel because it would lose water. O 2) It would shrivel because it is responding to a hypotonic environment. O 3) It would swell because it is experiencing a hypertonic environment. O 4) It would swell because it would gain water. O 5) Nothing would happen to the cell.In a bacterial cell, the DNA is in the _______. a) nucleoid b) cell envelope c) cell membrane d) nucleus e) ribosomesA type of cell wall that is often toxic.Question 8 options: a) gram-positive b) gram-negative c) acid-fast d) mycoplasma