Magnification And Resolution Flashcards
(35 cards)
What are Centrioles
Structures found in the cytoplasm made of mitrotubules that produce spindle fibres during mitosis
What do Centrioles produce
Spindle fibres
What are chloroplasts
Organelles found in plants and algae that are the site of photosynthesis
What are cilia
Small hair like structures that project from the surface of cells
What is a cytoskeleton
A mesh of protein fibres found in the cytoplasm of eukaryotic cells used for structural support and intercellular transport
What’s a eukaryotic cell
A type of cell that contains a nucleus along with membrane bound organelles
What is a Golgi apparatus
An organelle found in eukaryotic cells that’s involved in the modification and packaging of proteins
What are lysosomes
Membrane bound vesicles found in the cytoplasm that contains a digestive enzyme (lysozyme)
What are mitochondrion
An organelle in eukaryotic cells responsible for aerobic respiration and produce atp
What’s the nuclear envelope
A double membrane surrounding the nucleus
What’s the nucleolus
A structure found inside the nucleus that contains proteins and RNA and is involved in synthesising new ribosomes
What’s the nucleus
An organelle found in eukaryotic cells that stores genetic information
What’s a prokaryotic cell
A type of cell that doesn’t contain any membrane bound organelles
What are ribosomes
Organelles that can be found either free in the cytoplasm or membrane bound that involved in protein synthesis
What’s the rough endoplasmic reticulum (RER)
A membrane bound organelle involved in synthesis and packaging proteins
What’s the smooth endoplasmic reticulum (SER)
A membrane bound organelle involved in lipid synthesis
What’s magnification
How much bigger an image appears in comparison to the original object
What’s the magnification formula
Image size= actual size x magnification or Magnification= image size/ actual size or Actual size= image size/ magnification
What’s resolution
The ability to distinguish two different points in a specimen
What’s a scanning electron microscope (SEM)
A type of microscope that passes a beam of electrons over the surface of a specimen
What’s a transition electron microscope (TEM)
A type of microscope that passes a beam of electrons through a sample
What’s the benefit of a microscope with high resolution
The higher the resolution the better it is able to separate objects that are close together and provide a clear and detailed image
What factors determine the magnification of a microscope
The type of lens, the distance between the lens and object and the size of the eyepiece
Other than the magnification formula what’s is another way to calculate the actual size of a sample
Using a stage micrometer and a eyepiece graticule
(For example, a stage micrometer has the division of 0.1mm, within the 0.1 division there are 40 divisions of the eyepiece graticule (this can range) you would then divide 0.1 by 40. 0.1/ 40= 0.0025 x 1000 = 25 micrometers )
