Producers : Cactus, Sagebrush, annual flowers
Level 1 consumers: Ants, Beetles, Kangaroo rats.
Level 2 consumers: Chuckwalla, Tarantulas, Scorpions
Level 3 consumers: Common king snake, Gila monster, Turkey
Level 4 consumers: Vulture, Hawk, Fox
Decomposers: Bacteria
Answer:
a. The operon is under positive control
a.) Loss of enzyme synthesis results from loss of regulatory R gene product which is regulated in the presence of Tis ophane for transcription. Absence of (Tis), transcription is positively controlled by regulatory Rprotein
b.) The proposed model reveals Tis / B complex prevents Tis enzymes from undergoing transcription through the RB operator by binding to the B region
the role of the R protein is
-decrease affinity of Tis / B complex to B region of RB
-bind to the R region on RB
- change the conformation of B region
- yield decreased affinity of Tis / B complex when R gene is lacking preventing transcription in the process
Effects of the RB mutations is that R protein will not bind to Tis / B complex to reduce transcription
The temperature is lowest at the crust. As you get lower into the Earth's surface, the temperature gets hotter.
The answer is hydrogen bonds
