What is the maximum magnification of a scanning electron microscope?
Respuesta
x500 000
x50 000
x5 000
x0.5
Pregunta 2
Pregunta
What is the maximum resolution of a transmission electron microscope?
Respuesta
0.5nm
50nm
5nm
500nm
Pregunta 3
Pregunta
To calculate magnification, you must multiply actual size by image size.
Respuesta
True
False
Pregunta 4
Pregunta
Why is staining used in microscopy?
Respuesta
To visualise cells and cell components
To increase contrast between different components
To make the cells appear nicer
To view artificial colour when images are black and white
Pregunta 5
Pregunta
Mitochondrion are found in [blank_start]all[blank_end] cells.
Chloroplasts and a cellulose cell wall are found in [blank_start]plant[blank_end] cells.
Centrioles are found in [blank_start]animal[blank_end] cells.
Ribosomes are found in [blank_start]all[blank_end] cells.
Respuesta
all
plant
animal
bacterial
all
animal
plant
bacterial
all
animal
plant
bacterial
all
animal
plant
bacterial
Pregunta 6
Pregunta
Prokaryotes have [blank_start]circular[blank_end] DNA, eukaryotes have [blank_start]linear[blank_end] DNA.
Prokaryotes have [blank_start]no nucleus - free DNA[blank_end], eukaryotes have [blank_start]nucleus - contained DNA[blank_end].
Respuesta
circular
Linear
Free
linear
no nucleus - free DNA
nucleus - contained DNA
Pregunta 7
Pregunta
Which organelles are involved in the production of proteins?