B1a- cell structure and microscope Flashcards
Plant and animal cells are…
eukaryotic cells, which make up eukaryotic organisms.
most animals have…
a nucleus, a cytoplasm, a cell membrane, a mitochondria and ribosomes
what is the function of the nucleus?
contains the genetic material and controls the activities of the cell
what is the function of the cytoplasm?
where most of the chemical reactions happen
what is the function of a cell membrane?
controls what enters and leaves the cell
what is the function of the mitochondria?
where most of the reactions of aerobic respiration happen
what is the function of the ribosomes?
where proteins are made in the cell
Plant and algal cells have the same subcellular structures as…
animal cells
Plant and algal cells have…
a cell wall made of cellulose
a permanent vacuole containing cell sap
chloroplasts which contain chlorophyll and absorb light needed for photosynthesis
bacterial cells are what kind of cells?
prokaryotic cells
which cell is smaller a prokaryotic cell or a eukaryotic cell?
prokaryotic cell
Bacterial cells contain
cytoplasm and a cell membrane surrounded by a cell wall.
microscopy techniques have….
developed over time due to the development of technology
electron microscopes can produce images of …………… than light microscopes.
higher magnification and higher resolution
what is magnification?
magnification is how much bigger an object appears compared to its actual size.
what is resolution (resolving power)?
resolution is how well you can distinguish between objects close together (how detailed the image is)
magnification =
image size/actual size
actual size=
image size/ magnifacation
