Cells & Cell Theory
What is the basic unit of life according to cell theory?
What is a cell
This type of microscope is typically used in high school biology labs.
What is a light microscope
What is the purpose of making biological drawings from microscope observations?
What is to accurately record observations
Name one key difference between eukaryotic and prokaryotic cells.
What is the presence of a nuclear membrane
This is the process of enlarging the appearance of an object using optical instruments.
What is magnification
Name one scientist who contributed to the cell theory.
Who is Robert Hooke (or Theodor Schwann or Matthias Schleiden)?
Name a type of microscope that uses electron beams to create an image of a small speciment
What is an electron microscope
These should be included in a properly annotated biological drawing.
What are labels, title, scale, and magnification?
AN easy way to distinguish prokaryotes from eukaryotes if you cannot see any structures
What is size
How do you calculate total magnification when using a light microscope?
What is multiply eye piece magnification by Objective lens magnification
According to cell theory, this is how new cells are formed.
What is cells arise from pre-existing cells?
This is the maximum magnification generally achieved by a light microscope.
what is 1000X
This scale is placed in the eyepiece of a microscope and used to measure the size of objects viewed through the microscope.
hat is an eyepiece graticule?
This type of cell has mitochondria
What is Eukaryotic
If an image is 100 times larger than the actual specimen, this is the magnification.
How much is 100X
This is one of the main ideas in cell theory.
What theory claims all living organisms are composed of cells
What theory states all living organisms are composed of cells
What theory states all living organisms are composed of cells
Explain the difference between a transmission electron microscope (TEM) and a scanning electron microscope (SEM).
What is TEM provides detailed images of internal structures, while SEM provides detailed surface images?
Explain the process of preparing a wet mount for microscopic observation.
What is the method where you place a drop of water on the slide, add the specimen, cover it with a cover slip, and remove excess water to avoid air bubbles?
Describe the organization of DNA in prokaryotes
What is prokaryotes have circular DNA
Describe how to use the scale bar on a micrograph to determine magnification.
What is measure the length of the scale bar in the image, use it to find the actual length of the specimen, measure the image length, and calculate the magnification by dividing the image length by the actual length?
Explain the significance of cells being the basic structural unit of all living organisms.
What is cells carry out all the essential functions of life
This technique involves splitting a frozen biological sample to reveal the internal structures of membranes, often used in electron microscopy.
What is freeze fracture?
This procedure is necessary to accurately measure the size of a specimen under a microscope.
What is calibrating the eyepiece graticule using a stage micrometer?
This distinguishes eukaryotes from prokaryotes in terms of their internal cell structure
What is eukaryotes have membrane-bound organelles while prokaryotes do not?
Calculate the magnification if a cell appears 5 mm in a micrograph but is actually 50 µm in size.
What is 100x?