Cell-adhesion molecules (CAMs) mediate direct cell-cell adhesions.

TLS Online TPP Program

#Id: 7544

#Unit 6. System Physiology – Plant

Three main classes of mutations affecting plant height have been selected:

Gibberellin-insensitive dwarfs

Gibberellin-deficient mutants in which the gibberellin deficiency has been overcome by a second “suppressor” mutation, so the plants look closer to normal

Mutants with a constitutive gibberellin response (“slender” mutants)

TLS Online TPP Program

#Id: 5955

#Unit 10. Ecological Principles

Carnivore assimilation efficiencies are often about 80%, because carnivores consume largely soft tissue,  Assimilation efficiencies for herbivores average only about 5–20% 

Assimilation efficiencies of aquatic herbivores have higher  than terrestrial herbivores.

TLS Online TPP Program

#Id: 8218

#Unit 2. Cellular Organization

Sorting signal that directs lysosomal hydrolases from the TGN to the late endosome is- Mannose 6-phosphate (M6P).

TLS Online TPP Program

#Id: 6661

#Unit 3. Fundamental Processes

The site of cleavage/polyadenylation in most pre-mRNAs is flanked by two cis-acting signals:  An upstream AAUAAA motif, which is usually located 11 to 30 nucleotides from the site, and  A downstream U-rich or GU-rich element. 

he AAUAAA is needed for cleavage and polyadenylation because deletion or mutation of the AAUAAA hexamer prevents generation of the polyadenylated 3’ end

TLS Online TPP Program

#Id: 5837

#Unit 10. Ecological Principles

Sequential changes in community structure over physical distance, primarily influenced by time, constitute a chronosequence