Answer:
a. True, b. False, c.True, d. True
Explanation:
a. Base excision repair is started by a DNA glycosylase that recognizes the changes and removes the altered base by cleavage of the glycosidic bond binding the base and the deoxyribose sugar together.
b. Nucleotide excision repair works by a cut-and patch mechanism that removes their heavy lesions, including pyrimidine dimers and nucleotides . Endonucleases are responsible for the lesion of the damaged strand.
c. Nucleotide excision repair is initiated by the proteins namely UvrA, UvrC, and UvrB in Escherichia coli.
-UvrD (helicase II) later removes the damaged strand
-DNA polymerase I (PolI) fills in the resulting gap.
d. DNA glycolases removes the damaged nitrogenous base.
-It leaves the sugar-phosphate backbone intact and thus creating an apurinic/apyrimidinic site, which is commonly referred to as an AP site.
e. Xeroderma pigmentosum complementation group A(XPA)
-This is an essential protein in the nucleotide excision repair pathway.
- It helps to make a pre-incision complex along with other proteins.
The Neural Stem Cells. Hope this helped!
Continuous cell lines can be maintained through an indefinite number of generation :)
Answer:
Pollution prevention
Explanation:
The water conservation strategy being used when a household uses eco-friendly cleaning products would be <u>pollution prevention</u>.
<em>The cleaning of household materials generally generates wastewaters that somehow find their way into the water cycle of the environment. </em><u><em>Eco-friendly products are those that do not harm the environment in any way </em></u><em>and the use of eco-friendly cleaning products would ensure that the wastewaters generated from cleanings are minimally polluted, effectively conserving the water due to the environment.</em>
