Answer:
Chitin, Cellulose and Peptidoglycan (B, C and D)
Explanation:
Both chitin and cellulose are composed mainly of glucides, bound by glycosidic bonds of the Beta 1-4 type. This is largely why they cannot be digested by most non-herbivorous animals.
As for peptidoglycans, it is a net. It is a molecular framework present in bacteria that has β1-4 and α1-4 bonds in different proportions.
Answer:
25% were black
50% were blue
and 25% were white
Explanation:
White Rooster aa X Black Hen AA
F1: Aa Blue
then Aa x Aa
Outcomes will be:
25% were black (AA)
50% were blue (Aa)
and 25% were white (aa)
Answer:
Prokaryotes have RHO dependent and RHO independent transcription termination; Eukaryotes have the poly A signal and downstream termination sequence transcription termination.
Explanation:
Transcription is the process by which mRNA is synthesized from DNA by the enzyme RNA polymerase. The process of transcription is keep going until some termination signal/mechanism stops it. There are various differences of transcription in prokaryotes and eukaryotes like types of RNA polymerases, nitrogenous bases utilized and the mechanism of transcription termination.
Prokaryotic termination may be dependent on RHO proteins or not.
- In RHO dependent pathway the RHO factor (protein) slide towards the RNA polymerase along the DNA and dissociate it from DNA.
- In RHO independent pathway a stem loop is formed by mRNA from a sequence which pasues the polymerase temporarily and consequently causes dissociation of RNA polymerase with help of poly-uracil sequence.
Eukaryotic termination may occur through poly A signal and downstream termination sequence;
- Poly A tail is added mRNA for its protection. It prevent the mRNA degradation.
- The polymerases pauses on the termination signal and ultimately dissociates from DNA.
