2157792
Questão 1
Questão
what is the definition of magnification?
Responda
-
how big an object is
-
the difference between the size of the image and the size of the object
-
the degree to which the size of an image is larger than the object itself
Questão 2
Questão
what is the definition of resolution?
Responda
-
the degree to which it's possible to distinguish between to objects that are very close together
-
how detailed an image looks
-
how blurry an image looks
Questão 3
Questão
what is the resolution and magnification of a light microscope?
Responda
-
res = 2000 nm, mag = x2000
-
res = 200 nm, mag = x 1500
-
res = 200 micrometres, mag = x2000
Questão 4
Questão
how many micro metres is one cm equivalent to?
Responda
-
one hundred thousand
-
one million
-
ten thousand
Questão 5
Questão
how many nanometres is one cm equivalent to?
Responda
-
ten million
-
one million
-
one hundred million
Questão 6
Questão
what is the maximum magnification and resolution of a scanning electron microscope?
Responda
-
mag = x500 000, res = 0.2 nm
-
mag = x 500 000, res = 2 nm
-
mag = x100 00, res = 0.2 nm
Questão 7
Questão
what is the maximum magnification and resolution of a transmission electron microscope?
Responda
-
mag = x500 000, res = 0.2 nm
-
mag = x 100 000, res = 0.2 nm
-
mag = x500 000, res = 2 nm
Questão 8
Questão
what is a disadvantage of an electron microscope?
Responda
-
samples need to be prepared in a vacuum so electron beam is not deflected by molecules in the air
-
it has a maximum resolution which is 1000 times greater than a light microscope
-
it needs to be cleaned in ethanol daily
Questão 9
Questão
what is the cytoskeleton made of?
Responda
-
carbohydrate strings
-
protein fibres
-
phospholipids
Questão 10
Questão
what is the main role of the cytoskeleton?
Responda
-
provide stability for the cell
-
control what substances enter or leave the cell
-
restrict the movement of hydrophilic substances past the cell
Questão 11
Questão
how are microtubules arranged inside flagella and cilia?
Responda
-
in a ring of 9
-
in a ring of 11 with 1 in the centre
-
in a ring of 9 with 2 in the centre
Questão 12
Questão
what are plant cell walls made of?
Responda
-
murein
-
cellulose
-
amylose
Questão 13
Questão
what is the function of lysosomes?
Responda
-
to packages and modify proteins
-
produce ATP during respiration
-
contain a powerful digestive enzyme to break down waste materials
Questão 14
Questão
what is the highly folded inner membrane of a mitochondria called?
Responda
-
cristae
-
matrix
-
epithelium
Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.