An ecological niche is an organism's specific habitat in an ecosystem.
It is where it lives and feeds, etc.
Answer: The correct sequence is B, D, A, C
Explanation: During DNA replication, first, the enzyme helicase unwinds the double-stranded DNA molecule, creating two separate single strands with their bases exposed.
The two single strands each serves as a template for the synthesis of a new strand and the enzyme DNA polymerase then adds free nucleotides that are available in the nucleus to the primer to form new complementary strands. This results in two identical copies of DNA molecules.
Answer:
Mitocondria is responsible for the reactions in cellular respiration.
Explanation:
Mitochondria have an important role in cellular respiration through the production of ATP, using chemical energy found in glucose and other nutrients. Mitochondria are also responsible for generating clusters of iron and sulfur, which are important cofactors of many enzymes.
