Answer:
Topoisomerase and Primase
Explanation:
Topoisomerase — Relaxes the super-coiled DNA
Primase — Provides the starting point for DNA polymerase to begin synthesis of the new strand
Answer:
The options are missing in the question, the options are;
a. an archaean
b. a Paramecium
c. a yeast (fungus) cell
d. a grasshopper cell
The correct answer is A (an archaean)
Explanation:
Archaea and Bacteria are domains where prokaryotes are commonly found. Archaea and Bacteria as prokaryotes are unicellular organisms that lacks membrane-bound organnelles and a well defined nucleus, in the sense that unlike eukaryotic cells, a nucleus does not house their genetic material (DNA), instead their single circular chromosome is nakedly localized in a region called the NUCLEOID.
In addition, prokaryotic cells lacks many organnelles found in eukaryotic cells e.g mitochondria, Endoplasmic reticulum, lysosome etc. The few ones like ribosomes found in their cytoplasm are not enclosed by lipid bilayers called membranes.
Answer:
Hey, I answered your last question(the same one), so you should check the last question you posted.
Answer:
The tongue is covered with around 9,000 taste buds that are replaced every 10 days.
When a promoter element is bound by a positive regulatory protein, the result is the activation of transcription. Transcription factors are protein that increase the transcription of genes or a single gene. Most of them are DNA-binding proteins that bind to enhancers or promoter-proximal elements. The factors may bind directly to a promoter regions of DNA , which normally lie upstream of the coding region in a gene, or onto the RNA polymerase molecule.
