Platelet-activating factor released from basophils and stimulates platelet aggregation and the release of vasoconstrictor serotonin from platelets.

TLS Online TPP Program

#Id: 8637

#Section 3: Genetics, Cellular and Molecular Biology

The G1 cyclin-CDK complex (Cln3-CDK in yeast) stimulates the formation of G1/S phase cyclin-CDKs, which initiate bud formation, centrosome duplication, and DNA replication.

TLS Online TPP Program

#Id: 7759

#Section 2: General Biology

Some elements exist naturally as molecules. For example, hydrogen and oxygen exist as two-atom molecules.

TLS Online TPP Program

#Id: 7328

#Section 3: Genetics, Cellular and Molecular Biology

X-linked loci

Allele frequency when genotype frequency is given

TLS Online TPP Program

#Id: 8634

#Section 3: Genetics, Cellular and Molecular Biology

At the metaphase to anaphase transition, APC/C bound to Cdc20 targets cyclins A /B and securin for degradation.

TLS Online TPP Program

#Id: 7765

#Section 2: General Biology

An endothermic reaction (AH positive, heat absorbed) results when the bonds in the products are weaker than those in the reactants