Bioremediation uses microorganisms (bacteria, fungi) or their enzymes to detoxify or remove environmental pollutants, such as oil spills, heavy metals, and pesticides. Pseudomonas species are often used. Phytoremediation uses plants. This is a branch of environmental biotechnology. It is a sustainable and cost-effective cleanup method.
Explanation:
Blood group A has A antigens and anti-B antibodies. Group O has no antigens, AB is universal recipient, Rh incompatibility can cause erythroblastosis fetalis.
Explanation:
Adenine (A) pairs with thymine (T) via two hydrogen bonds. Guanine (G) pairs with cytosine (C) via three hydrogen bonds. This base pairing (complementarity) is key to the double helix structure and ensures accurate replication and transcription. The higher number of bonds between G-C contributes to DNA stability; GC-rich regions are harder to denature.
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