Flashcards
Biology 2.1.5 Components of a membrane
Cards in this deck (15)
- 1What are the four compnents of a membrane?Phospholipid
Protien
Cholesterol
Glycocalyx - 2What makes up a phospholipid?Glycerol, phosphate group and a fatty acid
- 3What bond is formed between the fatty acids and glycerol of the phospholipid?Ester bond
- 4What is the function of a phospholipid?Gives the membrane fluidity, barrier to large soluble water molecules and ions
- 5What substances can pass through the phospholipid bilayer?Lipid soluble molecules (hydrophobic)
- 6How is excesive close packing prevented in the phospholipid bilayer?Unsaturated fatty acids have kinks in the tails
- 7What part of the phospholipid is hydrophillic/hydrophobic?Hydrophillic head
Hydrophobic tail - 8What are the two different types of protiens that can be in a membrane?Intrinsic (goes all the way through the bilayer)
Extrinsic (on one side) - 9What do the proteins do?Provide support, transportation (carrier/channel proteins), helps cells adhere and hormone receptor site
- 10What does cholesterol do?Fits between fatty acids to make the barrier complete and reduces lateral movement of phospholipids giving membrane fluidity and stability
- 11What is a glycocalyx?A glycoprotein and glycolipid covering that surrounds the membrane
- 12What are glycoproteins?Carbohydrate chains attached to a protein
- 13What are glycolipids?Carbohydrate chains attached to phospholipids
- 14What are the two parts of a glycocalyx?Glycolipids and glycoproteins
- 15What is the function of glycocalyx?Receptor sites for hormones, helps cells adhere to form tissue and they form H bonds with water to stabalise proteins
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- User has deleted their subject information Flashcards on Biology 2.1.5 Components of a membrane, created by Deleted user on 07/06/2019.
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- Deleted user · Jun 2019
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- Jun 7, 2019
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- Created by Sam Gunnell · Mar 7, 2019
- Copied by Sam Gunnell · Jun 7, 2019
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