Answer:
The organisms homeostasis
Possible contaminate will be Proteus or Salmonella. To differentiate the two genera urease test can be accomplished. However, urease test, Proteus will produce a positive test result.
This test can be done to determine the ability of an organism to split urea. The principle of urease test is that urea is the product of decarboxylation of amino acid. Splitting of urea via hydrolysis will produce ammnonia and CO2. The CO2 produce allows the formation of bubbles.
Answer:
1. obtain food from non-living organic material (saprophyte)
2. mutually positive arrangement between species (symbiosis)
3. response to a chemical
(chemotaxis)
4. response to light (phototaxis)
5. member of phylum Foraminifera (radiolarian)
6. organism's response to a stimulus (taxis)
7. cell with membrane-bound structures (eukaryote)
8. organism in which a parasite is growing (host)
9. sexual reproduction in some protozoans (conjugation)
Explanation:
The items duely matched to its meaning above.
All the matches corresponds with each other, with small explaination of what each does.
Answer:
The model is in the annex
Explanation:
According to the model presented below, after the transition the RNA is in a state called pre-mRNA where we can see the presence of exons and introns. Introns are not sequences of nitrogenous bases that can participate in the production of proteins and therefore are removed from the RNA molecule through a process called splicing. Once the introns are removed, the mRNA is ready and leaves the nucleus towards the cytoplasm, by a process called exportation. Reaching the cytoplasm, the mRNA in association with the tRNA and the ribosomes will give rise to a polypeptide chain, in a process called translation, where the nitrogenous bases are transformed into amino acids.
The polypeptide chain has a linear sequence of amino acids. This chain will undergo several folds in a process called folding, where it will form a three-dimensional structure, the protein.