Cytokinesis

With the exception of higher plants, the division of the cell is brought about by a contractile ring made of actin and myosin

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: 1170

#Unit 7. System Physiology – Animal

The clearance of inulin equals the GFR.

TLS Online TPP Program

#Id: 7055

#Unit 11. Evolution and Behavior

Dollo’s law:  A biological generalization positing that complex characters, once lost in evolution, are extremely unlikely to reappear and thus the loss of complex characters is virtually always irreversible.

TLS Online TPP Program

#Id: 4518

#Unit 13. Methods in Biology

Waves are divided in various groups:

Alpha

Beta 

Delta  

Theta

Gamma 

TLS Online TPP Program

#Id: 2777

#Unit 13. Methods in Biology

UV radiation is used to cause DNA breakage. UV reacts quickly hence helps to catch momentary protein binding and can be used in vivo as it penetrates cell membranes easily. But gels from such assays are difficult to interpret.