Biosystems Exam 3

What is true about lipid bilayer membranes? (3)

• Form spontaneously

• Ions pass freely

• Protein mosaic

• Fluid movement

Active Transport uses energy to move ions across the bilipid membrane

• False

• True

Phophatidyl-serine signals... (2)

• creation of glycerol phospholipids

• cell death

• form vesicles

• apoptosis

How do lipids move within the membrane leaflet?

• Transferase

• Flippase

• Enzymes

• Lipase

Wha is the most abundant phosphoglyceride?

• phosphotidyl-serine

• phosphotidyl-ethanolamine

• glycerol-3-phosphate

• phosphotidyl-choline

What is the most abundant sphingolipid?

• sphingomyelin

• sphingo

• sponge lipid

• sphingomeso

What is the purpose of sterols/cholesterol?

• provide fluidity

• provide rigidity

• phospholipid

• mostly hydrophilic portion of membrane

Order of translation (Start-Finish)

• mRNA

• A site

• P site

• E site

• polypeptide

The transcribed from genomic DNA and contains codons for each amino acid.

Also known as anti-codons