Dryopithecus -Australopithecus afarensis- Homo habilis - Homo erectus - Homo heidelbergensis-Neanderthal and Homo sapiens

TLS Online TPP Program

#Id: 5750

#Unit 10. Ecological Principles

Dominant species - One that has a large effect in a community because of its abundance or large biomass.

TLS Online TPP Program

#Id: 8477

#Unit 1. Molecules and their Interaction Relevant to Biology

Each single strand of the b-sheet structure can be pictured as a twofold helix, that is, a helix with two residues per turn.

The arrangement of successive amide planes has a pleated appearance due to the tetrahedral nature of the Ca atom.

TLS Online TPP Program

#Id: 2671

#Unit 7. System Physiology – Animal

Paracellular reabsorption of cations causes slight positive charge of the tubular lumen relative to the interstitial fluid.

TLS Online TPP Program

#Id: 4968

#Unit 6. System Physiology – Plant

Very Low Fluence (VLF) Responses

It sensitive to low levels of light (0.1 nmol m -2 . Less than 0.02% is Pfr). These are not photo-reversible and saturate at 50 nmol m -2 . Some examples include;

a) mesocotyl elongation in cereals; and 

b) Arabidopsis seed germination

TLS Online TPP Program

#Id: 9285

#Unit 6. System Physiology – Plant

O2‐sensitive hemoprotein kinase FixL controls a regulatory cascade that activates transcription of nitrogen fixation genes