Cytotoxic T cells release granules containing the proteins perforin and granzyme-B. 

TLS Online TPP Program

#Id: 7927

#Section 3: Genetics, Cellular and Molecular Biology

Function of the ER:

most eukaryotic cells is to sequester Ca2+ from the cytosol (High concentration of Ca2+-binding proteins in the ER facilitates Ca2+ storage)

TLS Online TPP Program

#Id: 7926

#Section 3: Genetics, Cellular and Molecular Biology

Rough ER, which is associated with ribosomes, functions in the synthesis and processing of secreted and membrane proteins

Smooth ER, which lacks ribosomes, functions in lipid synthesis.

TLS Online TPP Program

#Id: 7925

#Section 3: Genetics, Cellular and Molecular Biology

Endoplasmic reticulum

Network of interconnected membranous structures within the cytoplasm of eukaryotic cells contiguous with the outer nuclear envelope.

TLS Online TPP Program

#Id: 8598

#Section 3: Genetics, Cellular and Molecular Biology

Labile factors called cyclins drive the progression of cells through different stages of the cell cycle by binding to CDKs.

TLS Online TPP Program

#Id: 8599

#Section 3: Genetics, Cellular and Molecular Biology

Cells commit to a new cell division at a specific point in G1 known as START or the restriction point.

TLS Online TPP Program

#Id: 8600

#Section 3: Genetics, Cellular and Molecular Biology

R-factor 

In mammalian cells - cyclin D 

In yeast - Cln3