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Y1 - Body Logs > Cellular Components > Flashcards

Cellular Components Flashcards

1
Q

What is the function of the Plasma membrane?

A

Compartmentalisation
Selective permeability
Transport of materials
Endocytosis
Exocytosis
Signal transduction
Intracellular adhesion and recognition

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2
Q

What is the function of the Nucleus?

A

Contains the genetic information of the cell (DNA , RNA and nucleoproteins)

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3
Q

What is the densely coiled DNA called that is visible in a TEM image?

A

Heterochromatin

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4
Q

What is the dispersed/loosely coiled DNA called that is not visible in a TEM image?

A

Euchromatin

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5
Q

What is the function of the Nucleolus?

A

The site of rRNA ( Ribosomal RNA) synthesis for ribosome assembly

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6
Q

What is the function of the Nuclear envelope?

A

The double membrane of specialised ER surrounding the nuclear space

Contains nuclear pores

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7
Q

What is the function of the Rough Endoplasmic Reticulum (RER)?

A

ER with associated ribosomes
Synthesises extracellular proteins

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8
Q

What is the function of Smooth Endoplasmic Reticulum (SER)?

A

Lipid biosynthesis
Intracellular transport

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9
Q

What is the function of free Ribosomes?

A

Produce intracellular proteins for the cyytoplasm

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10
Q

What is cisternae?

A

Flattened sacs

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11
Q

What is the function of the Golgi Apparatus?

A

Packages and processes (modifies) extracellular proteins synthesised by the RER

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12
Q

Describe the polarity of the Golgi apparatus

A

Proteins migrate form the convex end to the concave end of the stack

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13
Q

Which side of the Golgi apparatus do the vesicles leave?

A

Concave face

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14
Q

What can the vesicles leaving the concave face of the Golgi apparatus go on to do?

A

Lysosome assembly
Further processing
Secretion

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15
Q

What is the function of Lysosomes?

A

Contain Hydrolase enzymes
Digest and breakdown things they fuse with

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16
Q

How are lysosomal membranes protected from the digestive enzymes they contain?

A

They are highly glycosylated

17
Q

What is the function of Peroxisomes ?

A

Neede for oxidative reactions
Needed in detoxification

18
Q

What is the function of Mitochondria?

A

Generate energy rich ATP molecules

19
Q

What is the function of the cytoskeleton?

A

Maintaining and changing cell shape

20
Q

What are the 3 main types of cytoskeleton?

A

Microfilaments
Intermediate filaments
Microtubules

21
Q

What do microtubules do?

A

Allow for transport of substances through the cell

22
Q

What do intermediate filaments do?

A

Form tough suppporting network within the cytoplasm

Y1 - Body Logs (25 decks)

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