Light absorption by rhodopsin→activation of a cGMP PDE → hydrolyzes cGMP to 5′-GMP→ cGMP levels  drop →channel close →membrane hyperpolarization→reduction in NT release→transmitted to brain

TLS Online TPP Program

#Id: 3646

#Unit 3. Fundamental Processes

All Class I enzymes aminoacylate their bound tRNA’s 3′-terminal 2′-OH group, whereas Class II enzymes charge the 3′-OH group.

TLS Online TPP Program

#Id: 6657

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 2362

#Unit 5. Developmental Biology

Zeta and Sigma neoblasts are morphologically indistinguishable, but they express different gene regulatory networks.

TLS Online TPP Program

#Id: 7935

#Unit 2. Cellular Organization

The SRP is a cytosolic ribonucleoprotein particle that transiently binds to both the ER signal sequence in a nascent protein and the large (60S) ribosomal subunit, forming a large complex.

TLS Online TPP Program

#Id: 2607

#Unit 13. Methods in Biology

SSR alleles differ in length.

Left and right primers correspond to unique sequences that flank the SSR locus.

PCR-amplification of two alleles of an SSR locus.

Gel electrophoresis distinguishes the alleles from each other.