Practice Questions

Tay-Sachs is a lysosomal storage disorder where the inability to break down membrane gangliosides leads to toxic buildup in neurons.

Lectins are specialized proteins that recognize and bind specific carbohydrate structures, facilitating cell-to-cell contact.

Telomerase requires its intrinsic RNA component to serve as a matching template for the synthesis of telomeric DNA chromosome ends.

Ceruloplasmin is a specialized transport protein and enzyme that binds copper ions tightly, making it a conjugated metalloprotein.

Scurrying pathogens use hydrophilic, slippery glycoprotein capsules to hide their surface markers and evade immune cell engulfment.

As VLDL unloads triacylglycerols into adipose tissues via lipoprotein lipase, it becomes denser and transforms into cholesterol-rich LDL.

Proteoglycans form large aggregates with hyaluronic acid in cartilage, trapping water molecules to resist mechanical compression.

High-density lipoproteins (HDL) have the highest protein-to-lipid ratio and act to clear excess cholesterol from the circulatory pathways.

TMV consists of a single strand of genomic RNA wrapped in a helical coat of capsomere proteins, forming a pure nucleoprotein.

Chylomicrons are large lipoproteins that absorb and transport dietary triacylglycerols and cholesterol from the intestines into lacteals.