Which of the following provides the most likely explanation for the limiting factor of a cell's size? A B с D As the cell size increases, its volume increases while its surface area does not. As the cell size increases, its volume increases at a faster rate than its surface area. As the cell size increases, its volume increases at a slower rate than its surface area. As the cell size increases, its surface area increases while its volume does not.
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- Which of the following statements best describes what happens when a pacterial cell is placed in a solution containing 5% NaCl? O The cell will undergo osmotic lysis. O Water will move out of the cell. O No change will result; the solution is isotonic. O Water will move into the cell. O Sucrose will move into the cell from a higher to a lower concentration.Which of the following is the limiting factor for cell size? a density b volume c surface-to-volume ratio d surface areaWhat is the significance of the protein-lined pits? O Protein attracts other proteins needed for ATP synthesis within the cell. Protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. The polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. Receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.
- A cell's normal surface area:volume ratio (SA:Vol) is 3:1. As a rest of unusual uptake of water, it expands in size so that its SA:Vol changes to 2:1. Which statement below best describes the cells response. 1) The cell divides because it has too much surface area for its enclosed volume. 2) The cell is able to take up more materials due the decreased surface area to volume ratio. 3)The cell divides because it can no longer adequately acquire the necessary resources for its survival. 4) The cell changes it cell membrane structure, halting the further intake of water.The following diagram shows the effect of osmotic concentration on a plant cell. Using the terms isotonic, hypertonic and hypotonic identify what is happening in each cell and state what each term means and which cell it applies to. Plant cells cell wall -nucleus cell membrane -central vacuole -chloroplast Paragraph B I U v A !!! liliA plant cell placed in a hypertonic solution will: O remain unchanged. O swell slightly. O undergo plasmolysis. O undergo lysis. The step(s) involved in cell signaling are:
- Choose between osomosis, active transport, facilitated diffusion, simple diffusion, endo-exo cytosine . -Na+ high concentration outside, low inside. Cell wants it to go out. -Na+ high concentration outside, low inside. Cell wants it to come in. -O2 high concentration outside, low inside. Cell wants it to come in. -Put cell in salt water and it shrivels -Requires clathrin or similar molecule.A plant cell placed into a hypotonic environment will: Lyse Will “puff up” and swell but not lyse Go through plasmolysis Remain at the same osmotic pressureAn animal cell has an internal concentration of 0.1M of NaCl. You place this cell into a solution with 5M NaCl. Select the true statement below. The solution is hypotonic to the cell therefore the cell will lyse The solution is hypotonic to the cell therefore the cell will shrivel The solution is hypertonic to the cell therefore water will lyse The solution is hypertonic to the cell therefore water will shrivel
- CELL ENVIRONMENTS Fill in the following statement: Diffusion is the movement of molecules from_high_concentration to_low. concentration. is the diffusion of water. BEAKER #I The solution inside the beaker is: % water % salt The solution inside the cell is: 90 10 % water % salt 20% salt How will the water move? Into the cell or out of the cell? 10% salt How will the movement of water affect the cell? The cell O Water molecules This is a(n) solution.Fill in the blanks with the following words: diffusion, endocytosis, solute pump, osmosis. The type of active transport in which sodium and potassium are pumped across a membrane using ATP is called a This passive process is where water moves in and out of a cell The type of passive process in which molecules move across the plasma membrane down a concentration gradient is called This process is where the cell engulfs extracellular substances by phagocytosis or pinocytosisWhich of the following is NOT correct: The quantity of ER inside a cell fluctuate depending on cell size ER allowing molecules to move from one part of the cell to another The ER function is act as an internal transport system short polypeptides containing less than 20-30 amino acids called .. O oligopeptides O polypeptide O long chain of protein