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BISC 261 Exam Prep | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | 100% Pass $13.48   Add to cart

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BISC 261 Exam Prep | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | 100% Pass

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  • BISC 261
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BISC 261 Exam Prep | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | 100% Pass

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  • August 2, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BISC 261
  • BISC 261
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BISC 261 Exam Prep | Questions & Answers (100 %Score) Latest Updated 2024/2025
Comprehensive Questions A+ Graded Answers | 100% Pass


Refractive index - ✔️✔️a measure of how greatly a substance slows the velocity of light



Working distance - ✔️✔️Distance when it is in sharp focus



resolution - ✔️✔️The ability to tell that two separate points or objects are separate



Simple stain - ✔️✔️Determine size, shape, and arrangement of bacteria



Differential stain - ✔️✔️procedure that distinguish organism based on their staining properties



Focal point - ✔️✔️the point at which rays parallel to the optical axis reflect and meet



Fluorochromes - ✔️✔️Cells may be stained with fluorescent dyes



parfocal microscope - ✔️✔️a microscope that once in focus, it will remain in focus, even if you go to a
higher magnification



Bright Field Microscope - ✔️✔️dark image against bright background



Focal length - ✔️✔️the distance from the center of a lens to the focal point



Phase microscope - ✔️✔️Excellent way to observe the living cells; converts differences in refractive index
into detected variations in light intensity



Fluorescence microscope - ✔️✔️Instrument used to visualize a specimen that has been labeled with a
fluorescent dye (fluorochromes); exposes specimen to UV, violet, or blue light

, Capsule stain - ✔️✔️Used to visualize polysaccharide capsules surrounding bacteria



Transmission Electron Microscope (TEM) - ✔️✔️a microscope that passes an electron beam through very
thin sections stained with heavy metal atoms and is primarily used to study the internal ultrastructure of
cells



Flagella stain - ✔️✔️mordant applied to increase thickness of flagella



Scanning electron microscope - ✔️✔️a microscope that produces an enlarged, three-dimensional image
of an object by using a beam of electrons excited from the surface of a specimen



Spore stain - ✔️✔️Used to see endoscopes inside bacterial cells



plasma membrane - ✔️✔️A selectively-permeable phospholipid bilayer (embedded with proteins) forming
the boundary of the cells



Pseudomurein - ✔️✔️a component of the cell wall of archaea; it is similar to peptidoglycan in structure
and function but contains different components



Lipopolysaccharide (LPS) - ✔️✔️molecule composed of lipid A and polysaccharide found in the external
membrane of Gram-negative cell walls



FtsZ - ✔️✔️a protein in bacteria and archaea that forms a ring during septum formation in cell division



MreB - ✔️✔️-forms a coil inside rod-shaped cells in bacteria

-maintains shape by positioning peptidoglycan synthesis machinery



chromosome - ✔️✔️gene-carrying structure found in the nucleus. Each chromosome consists of one very
long DNA molecule and associated proteins.

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