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Cell Biology- Samiyah > Cell Membranes > Flashcards

Cell Membranes Flashcards

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1
Q

What is the function of membranes within a cell

A
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2
Q

What is an ampipathic lipid
What does lipid structure determine

A
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3
Q

What are Cell Membranes made up of

A

Lipids + proteins

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4
Q

Draw the structure of a phospholipid

A
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5
Q

What happens of the tail of a phospholipid has unsaturated lipids

A
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6
Q

What is the main type of phospholipid in most animal cell membranes

A

Phosphoglycerides

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7
Q

How do ampipathic lipids drive bilayer membrane formation

A
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8
Q

what types of membrane lipids are there

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9
Q

What ways can membrane lipids move

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10
Q

What are lipid raft domains

A
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11
Q

Why is the asymmetry of membrane lipids important for a cell

A
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12
Q

Who is a smelly baby

A

Joey kar kit pang

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13
Q

What is the role of proteins in the membrane

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14
Q

What are transmembrane proteins

A
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15
Q

How can mapping the hydrophobic parts of transmembrane protein predict its arrangement across membranes

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16
Q

What does glycosylated mean

A

The attachment of carbohydrates to the backbone of a protein through an enzymatic reaction
It’s a type of post translation modification
Plays a crucial role in determining protein structure and stability

17
Q

What are lipid raft domains made up of

A

Sphingolipids
Cholesterol
Glycosphingolipids
Integral membrane proteins
Peripheral Membrane Proteins

18
Q

What are the characteristics of lipid raft domains

A

Lipid rafts are more ordered and tightly packed than the surrounding membrane regions due to the presence of saturated lipids and cholesterol.

lipid rafts are dynamic and can form, disassemble, and reorganize rapidly in response to cellular signals and changes in the environment

Small Size

19
Q

What are the functions of lipid raft domains

A

Lipid rafts serve as platforms for the clustering of signaling molecules, facilitating efficient signal transduction

They are involved in the sorting and trafficking of proteins and lipids within the cell. This includes roles in endocytosis, exocytosis, and intracellular transport.

Lipid rafts help in the segregation and organization of proteins within the membrane, ensuring that specific proteins are localized to functional regions of the cell surface.

Certain viruses exploit lipid rafts for entry into host cells

Cell Biology- Samiyah (17 decks)

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