Principles of Biology Quizzes Latest 2026 With
Answers
Magnification
Visual increase in size compared to actual size
Resolving Power
Ability to see things enough to differentiate two objects
Light Microscope (LM)
Light passes through a specimen then through glass lenses into the viewer's eye.
- Magnification power: up to 1,000 times
- Resolving power: 0.2 micrometers
Electron Microscope (EM)
Electron beam instead of light
-Magnification power: up to 100,000 times
-Resolving power: 2 nanometers (1,000 nanometers = one micro-meters)
Scanning Electron Microscope (SEM)
Electron beam, used for viewing the outer architecture (surface) of the structure
Transmission Electron Microscope (TEM)
Electron beam, used to view internal structures
What are the two major categories of cells?
, Prokaryotic- Bacteria & Archaea
Eukaryotic- Eukarya
Characteristics of prokaryotic cells
1. No internal membranes- no nucleus and no sparation
2. No organelles- small organs (specific functions)
3. Cell Walls- They do have a cell wall, shell that protect contents (eukaryotic cells don't have
cell walls)
Characteristics of eukaryotic cells
1. Plasma membrane- only the outer membrane
2. Nucleus- has a double membrane: pores selectively shuttle
3. Cytoplasm- region between nucleus and plasma membrane
4. Cytosol- fluid between plasma membrane and nucleus
5. Organelles- Small organs
Characteristics of Plasma Membrane
1. Phospholipids- Only 2 fatty acids instead of 3 + Negatively charged (hydrophilic)
2. Fluid Mosaic- Floating proteins can move
Extracellular matrix
Protein layer that holds tissues together
- shoots it out and sticks together
Cell Junctions
Answers
Magnification
Visual increase in size compared to actual size
Resolving Power
Ability to see things enough to differentiate two objects
Light Microscope (LM)
Light passes through a specimen then through glass lenses into the viewer's eye.
- Magnification power: up to 1,000 times
- Resolving power: 0.2 micrometers
Electron Microscope (EM)
Electron beam instead of light
-Magnification power: up to 100,000 times
-Resolving power: 2 nanometers (1,000 nanometers = one micro-meters)
Scanning Electron Microscope (SEM)
Electron beam, used for viewing the outer architecture (surface) of the structure
Transmission Electron Microscope (TEM)
Electron beam, used to view internal structures
What are the two major categories of cells?
, Prokaryotic- Bacteria & Archaea
Eukaryotic- Eukarya
Characteristics of prokaryotic cells
1. No internal membranes- no nucleus and no sparation
2. No organelles- small organs (specific functions)
3. Cell Walls- They do have a cell wall, shell that protect contents (eukaryotic cells don't have
cell walls)
Characteristics of eukaryotic cells
1. Plasma membrane- only the outer membrane
2. Nucleus- has a double membrane: pores selectively shuttle
3. Cytoplasm- region between nucleus and plasma membrane
4. Cytosol- fluid between plasma membrane and nucleus
5. Organelles- Small organs
Characteristics of Plasma Membrane
1. Phospholipids- Only 2 fatty acids instead of 3 + Negatively charged (hydrophilic)
2. Fluid Mosaic- Floating proteins can move
Extracellular matrix
Protein layer that holds tissues together
- shoots it out and sticks together
Cell Junctions
