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Cells - Biology > Cell (Funtions And Structure) > Flashcards

Cell (Funtions And Structure) Flashcards

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1
Q

Structure of the nucleus

A

Surrounded by nuclear envelope
Nuclear pores allow mRNA out
Connected to rough endoplasmic reticulum

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2
Q

Structure of mitochondria

A

Double membrane
Inner membrane has many infolds giving it a large surface area

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3
Q

Structure of a lysosome

A

Membrane sac of hydrolytic enzymes
Acidic environment is optimum for its enzymes for digestion

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4
Q

Structure of ribosome

A

Two subunits made of rRNA and proteins
May be free in cytosol or attached to the endoplasmic reticulum

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5
Q

Structure of endoplasmic reticulum

A

Network of membrane sacs and tubules
Continuous with nuclear envelope

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6
Q

Structure of golgi apparatus and vesicles

A

Stacks of flat membrane sacs
2 ends: cis (next to ER) and trans (across from ER)
Cis - receives products Trans - products leave here

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7
Q

Structure of cell membrane

A

Membrane found outside the cell
Made of lipids and proteins

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8
Q

Function of nucleus

A

Control centre of the cell
Produces mRNA and protein synthesis
Contains genetic information

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9
Q

Function of mitochondria

A

Where cellular respiration occurs
Where ATP is generated

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10
Q

Function of a lysosome

A

Digestive organelle
Does hydrolysis of macromolecules

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11
Q

Function of ribosomes

A

Makes proteins
Cells that specialise in protein secretion have high numbers of ribosomes

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12
Q

Function of endoplasmic reticulum

A

Membrane synthesis
Metabolic processes

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13
Q

Function of Golgi apparatus and vesicles

A

Synthesis, modification and secreting cell products

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14
Q

Function of cell surface membrane

A

Controls the passages if substances in and out of the cell

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15
Q

Structure of cell wall

A

Made up of polysaccharides- generally cellulose

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16
Q

Function of cell wall

A

Provides and maintains the shape of the cells and serves as a protective barrier

17
Q

Structure of vacuole

A

Membrane bound sac
Water collects in the vacuole - they contain cell sap such as nutrients and mineral salts

18
Q

Function of vacuole

A

Store nutrients and waste products
Helps to increase cell size during growth and act like lysosomes in animal cells
Regulates tugor pressure in the cell

Cells - Biology (10 decks)

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