Nutrient Leaching
Leaching is the process where dissolved nutrients in the
soil profile moves downward with percolating water. It is the loss of
water-soluble plant nutrients from the soil. The nutrients that seep through
the rooting zone may be recycled if roots grow deeper.
<span>Damaged dna is excised by endonuclease.
Three excision repair pathways exist to repair single stranded DNA damage: Nucleotide excision repair (NER), base excision repair (BER), and DNA mismatch repair (MMR).</span>
The correct answer is: B. Fungus X is a common mold, and fungus Y is a chytrid.
A mold is a fungus that grows in the form of multicellular filaments called hyphae which form a network known as a mycelium. This group of fungi is important in biotechnology and food science (for example production of foods, beverages, antibiotics, pharmaceuticals and enzymes).
Chytrid ("little pot") refers to group of fungi with chitin cell walls, a posterior flagellum and absorptive nutrition. They reproduce with zoospores (motile asexual spores).
<span>We are to identify which among the given choices is not part of the lac operon genes. Lac operon consists of three structural genes which include the promoter gene, the regulator gene, and lastly the operator gene. From the given choices, the one that is not included is the repressor. </span>
