4250649
Pregunta 1
Pregunta
What structures can be seen through an optical microscope?
Respuesta
-
Lysosmes
-
Golgi Apparatus
-
Ribosomes
-
Nucleus
Pregunta 2
Pregunta
The RER has ribosomes that make proteins which are enzymes.
Respuesta
- True
- False
Pregunta 3
Pregunta
What are the functions of the Golgi Apparatus?
Respuesta
-
Modifies materials.
-
Aids the breakdown of materials.
-
Helps substances to diffuse in and out of the cell.
-
Transports substances to the cell surface.
Pregunta 4
Pregunta
An animal cell does not contain ___ and ____ unlike a plant cell.
Respuesta
-
Plasma membrane and chloroplasts.
-
Endoplasmic reticulum and cell wall.
-
Cell wall and chloroplasts.
-
Ribosomes and Golgi Apparatus.
Pregunta 5
Pregunta
To remove organelles you must;
1) Break open the cells
2) Place sediments in a cold, isotonic, buffered solution
3) Place in the centrifuge to remove organelles in size order
Respuesta
- True
- False
Pregunta 6
Pregunta
You must stain a Transmission Electron Microscope sample because..
Respuesta
-
Remove water from the specimen.
-
Produce contrast on the micrograph.
-
Stabilise the structures.
Pregunta 7
Pregunta
Scanning a beam of [blank_start]electrons[blank_end] across a SEM specimen knocks of electrons and allows them to be gathered in a [blank_start]cathode[blank_end] ray tube to form an [blank_start]image[blank_end].
Respuesta
-
electrons
-
high voltage
-
protons
-
anode
-
cathode
-
electron
-
image of high resolution
-
scan
-
image
Pregunta 8
Pregunta
What are examples of artefacts?
Respuesta
-
Dust
-
Water
-
Too much stain
-
Hydrated specimen
Pregunta 9
Pregunta
What are the similarities of prokaryotic and eukaryotic cells?
Respuesta
-
Both are bound by a plasma membrane.
-
ER is present in both.
-
Vesicles are visible in both.
-
All organelles are membrane-bound.
Pregunta 10
Pregunta
The outer membrane of mitochondria are folded into cristea.
Respuesta
- True
- False
Pregunta 11
Pregunta
The Golgi Apparatus is an extension of the nuclear membrane.
Respuesta
- True
- False
Pregunta 12
Pregunta
What are the functions of smooth endoplasmic reticulum?
Respuesta
-
Production of hormones and steroids.
-
Production of muscle fibres.
-
Store lipids.
-
Synthesise lipids.
Pregunta 13
Pregunta
Many [blank_start]Golgi Apparatus[blank_end] are found in synapses to [blank_start]transport[blank_end] chemicals across neurons and in glandular tissue to modify [blank_start]proteins[blank_end] to enzymes.
Respuesta
-
Golgi Apparatus
-
Ribosomes
-
Endoplasmic Reticulum
-
modify
-
synthesise
-
transport
-
proteins
-
ribosomes
-
amino acids
Pregunta 14
Pregunta
The equation for magnification is: Image size = Magnification * Actual size
Respuesta
- True
- False
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