Parenchyma cells

Mature parenchyma cells have primary walls that are relatively thin and flexible, and most lack secondary walls

Mature parenchyma cells have a large central vacuole

TLS Online TPP Program

#Id: 10350

#XL - Q Biochemistry

B cells migrate to the lymphoid follicles. They are directed there by chemokine interactions between CXCL13, which is secreted by follicular dendritic cells (FDCs).

TLS Online TPP Program

#Id: 8032

#XL - Q Biochemistry

Ornithine and citrulline, which are not found in proteins, are intermediates in the biosynthesis of arginine and in the urea cycle.

TLS Online TPP Program

#Id: 8936

#XL - T Zoology

When a kinetochore is unattached, the outer kinetochore component Knl1 is phosphorylated by the checkpoint kinase Mps1.

TLS Online TPP Program

#Id: 8605

#XL - T Zoology

S phase Cyclin–CDKs

In human - cyclin A-CDK 2 

In budding yeast - CIb 5/6-Cdc 28

TLS Online TPP Program

#Id: 9847

#XL - R Botany

cry1 and cry2 are generally found in the nucleus, cry3 is localized to chloroplasts and mitochondria