In bacteria, MreB polymerizes and appears to move in patches around the circumference of the cell attached to the peptidoglycan synthesis machinery, includingPBP2.

TLS Online TPP Program

#Id: 5217

#Unit 7. System Physiology – Animal

Anticoagulants dicumarol and warfarin inhibit the action of vitamin K.

TLS Online TPP Program

#Id: 8459

#Unit 1. Molecules and their Interaction Relevant to Biology

Five types of constraints affect the stability of an  helix: 

(1) the intrinsic propensity of an amino acid residue to form an  helix; 

(2) the interactions between R groups, particularly those spaced three (or four) residues apart; 

(3) the bulkiness of adjacent R groups; 

(4) the occurrence of Pro and Gly residues; and 

(5) interactions between amino acid residues at the ends of the helical segment and the electric dipole inherent to the  helix.

TLS Online TPP Program

#Id: 7054

#Unit 11. Evolution and Behavior

Hitchhiking: Change in the frequency of an allele due to linkage with a selected allele at another locus.

TLS Online TPP Program

#Id: 8661

#Unit 10. Ecological Principles

Leibig’s law of the minimum assumes that each resource has an independent effect on the growth of a population.In other words, it assumes that if a given resource limits the growth of individuals and populations, increasing the availability of other resources will not improve such growth.

TLS Online TPP Program

#Id: 5711

#Unit 7. System Physiology – Animal

Somatotropes—human growth hormone

promotes growth of the entire body by affecting protein formation, cell multiplication, and cell differentiation.