Blood cells use a protein called hemoglobin to capture and carry oxygen.
I think its B. It sounds familiar
I would say photosynthetic bacteria are the most important, because if they disappeared most of the oxygen in the atmosphere wouldnt be here and complex life like humans wouldnt exist
The correct answer is: The addition of a 7-mG cap at the 5' end of the transcript and the addition of a poly-A sequence at the 3' end of the message
These posttranscriptional processes are called:
• 5’ capping - It protects the mRNA from 5' degradation by exonucleases. Cap is also involved in ribosomal binding.
• Polyadenilation or addition of poly(A) tail – It also protects mRNA from degradation of 3’exonucleases. A long poly(A) tail can also increase translation.
Answer:
Molecular Evidence has recently made it necessary to assign the prokaryotes to either of two different domains.
Explanation:
- There was an OLD 5 classification system :
- Monera
- Protists
- Plants
- Fungi
2. NEW 3 domain system reflects :
- A greater understanding of evolution
- Molecular evidence
Thus, the new domain includes :
- Prokaryote : Bacteria
- Prokaryote : Achaebacteria
3. Eukaryotes :
- Protists
- Plants
- Fungi
- Animals
