TLS Online TPP Program

#Id: 1964

#Unit 10. Ecological Principles

A static life table accomplishes the same goal, but instead of following a cohort of individuals from life to death, data is gathered on the age structure of a given population at one point in time.

TLS Online TPP Program

#Id: 4279

#Unit 12. Applied Biology

Cell viability is calculated as the number of viable cells divided by the total number of cells.

TLS Online TPP Program

#Id: 9297

#Unit 6. System Physiology – Plant

Nitrite reductase

Nitrite (NO2-) is a highly reactive, potentially toxic ion.

Plant cells immediately transport the nitrite into chloroplasts or plastids.

The enzyme nitrite reductase reduces nitrite to ammonium.

Leaf chloroplasts and root plastids contain different forms of nitrite reductase.

Each polypeptide contains two prosthetic groups, an iron-sulfur group and a specialized heme.

NO3-, high sucrose conc, and light induce the transcription of nitrite reductase mRNA.

Asparagine and glutamine repress the induction.

TLS Online TPP Program

#Id: 9146

#Unit 11. Evolution and Behavior

Effects of different evolutionary forces on allelic frequencies

TLS Online TPP Program

#Id: 5001

#Unit 6. System Physiology – Plant

The critical difference is that,

In short-day (i.e., winter flowering) plant species, P_FR inhibits flowering.

In long-day (i.e., summer-flowering) plant species, P_FR induces flowering.