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Which of the following is NOT a distinguishing characteristic of prokaryotic cells |
They lack a plasma membrane. |
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Which of the following statements about a gram-positive cell wall is false |
It protects the cell in a hypertonic environment. |
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Which of the following statements best describes what happens when a bacterial cell is placed in a solution containing 5% NaCl? |
WATER WILL MOVE OUT OF THE CELL |
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The best definition of osmotic pressure is |
The force with which a solvent moves across a semipermeable membrane from a higher to a lower concentration |
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By which of the following mechanisms can a cell transport a substance from a lower to a higher concentration |
active transport |
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Which of the following is NOT a characteristic of the plasma membrane |
maintains cell shape |
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Which of the following have a cell wall |
fungi |
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Which of the following statements is true |
Endospores allow a cell to survive environmental changes |
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Which of the following pairs is mismatched |
Centrosome — food storage |
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Which of the following organelles most closely resembles a prokaryotic cell |
… |
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Which drawing in Figure 4.1 is a tetrad? |
OO OO |
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Which drawing in Figure 4.1 possesses an axial filament? |
~~~~~~~~~~~ |
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Which drawing in Figure 4.1 is streptococci? |
000000000 |
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Which drawing in Figure 4.1 is a bacillus? |
(____) |
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Which of the following statements about prokaryotic cells is generally false? |
They possess 80S ribosomes. |
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Which of the following statements about gram-negative cell walls is false |
They are sensitive to penicillin |
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Which of the following structures is NOT found in prokaryotic cells |
cilium |
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Which of the following statements about the glycocalyx is false |
It protects from osmotic lysis |
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Which of the following is NOT a chemical component of a bacterial cell wall |
cellulose |
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Which of the following is NOT part of the active transport process |
cell wall |
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Which of the following terms best describes the cell in Figure 4.2 |
Lophotophores |
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In bacteria, photosynthetic pigments are found in |
Chromatophores |
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The difference between simple diffusion and facilitated diffusion is that facilitated diffusion |
Requires transporter proteins |
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Which of the following is NOT a possible function of magnetosomes |
get cells to the north pole |
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You have isolated a motile, gram-positive cell with no visible nucleus. You can safely assume that the cell |
has a cell wall |
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Fimbriae and pili differ in that pili |
… |
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In Figure 4.3, which diagram of a cell wall is a gram-negative cell wall |
(smaller) gram-negative |
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In Figure 4.3, which diagram of a cell wall is a toxic cell wall |
(smaller) gram-negative |
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In Figure 4.3, which diagram of a cell wall has a wall that protects against osmotic lysis |
both |
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In Figure 4.3, which diagram of a cell wall is decolorized by acetone-alcohol? |
(smaller) gram-negative |
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In Figure 4.3, which diagram of a cell wall is resistant to many antibiotics (e.g., penicillin)? |
(smaller) gram-negative |
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In Figure 4.3, which diagram of a cell wall contains teichoic acids? |
(larger) gram-positive |
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In Figure 4.3, which diagram of a cell wall contains porins? |
(smaller) gram-negative |
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Where are phospholipids most likely found in a prokaryotic cell? |
plasma membane |
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Where are phospholipids most likely found in a eukaryotic cell |
Around organelles and in plasma membrane |
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Which of the following is NOT found in mitochondria and prokaryotes? |
cell wall |
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Figure 4.4 shows movement across a plasma membrane. Which figure best represents a specific transporter protein? |
O with o through the center partially closed |
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Figure 4.4 shows movement across a plasma membrane. Which figure best represents simple diffusion? |
Substance passes through membrane without the aid of a protein |
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Figure 4.4 shows movement across a plasma membrane. Which figure best represents an aquaporin? |
Water channel only (no diffusion) |
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What will happen if a bacterial cell is placed in distilled water with lysozyme? |
The cell will undergo osmotic lysis |
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What will happen if a bacterial cell is placed in 10% NaCl with penicillin? |
The cell will plasmolyze |
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Which one of the following pairs is mismatched |
Ribosomes — protein storage |
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Which of the following are NOT energy reserves |
Carboxysomes |
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Which of the following pairs is NOT a functionally analogous pair |
Cilia — pili |
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The bacteria on the outside of termite protozoa |
Propel the protozoan. |
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