1.3Membrane structure Flashcards

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1
Q

Learning objective 1._ learn to draw a plasma membrane structure.

A
Success criteria:
_Diagram must show phospholipid bilayer 
_cholesterol
_glycoproteins
_glycolipids
_integral and peripheral proteins
_Use the term plasma membrane
_membrane surrounding the cytoplasm
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2
Q

Learning objective 2._ Explain how hydrophobic and hydrophilic properties of phospholipids helps to maintain structure.

A

Success criteria:
Clear drawing of phospholipids.
Clear discription hydrophilic and hydrophobic means.

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3
Q

Plasma membrane_Objective_

A

Describe:
_structure
_Arrangement of phospholipids

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4
Q

What are membranes?_Function

A

_keeping cellular components inside the cell.
_Allowing selected molecules to move in and out the cell.
_Isolating organelles_Cytoplasm-allowing processes to occur separately.
_A site for biochemical reactions.
_Allows cells to change shape.

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5
Q

Disproven_Modal: Davson-Danielli modal

A

Problems:
_Membrane proteins vary greatly between different cells.\
_Unclear how proteins would allow for change in shape -without breaking bonds.
_Membrane proteins are hydrophobic and should not be found in aqueous cytoplasm or extracellular environment.

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6
Q

What membranes contain.

A

Phospholipids
Proteins
Carbohydrates
Cholesterol

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7
Q

Phospholipid

A

Type of Lipid

Lipid Groups_Oils_Fats_Triglycerides

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8
Q

Phosphate_The Head

A

Properties:

Phosphate _(Has a negative charge and is attracted to water)
Glycerol

Characteristic:
Hydrophilic(water loving)
Polar(Uneven distribution)
Soluble(Mixes with water)

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9
Q

Phospholipid_The Tail

A

Properties:

Fatty acid

Characteristics:

Hydrophobic(Water hating)
insoluble(Will not mix with water)

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