Answer:
Second choice is the right one.
1. the presence of enzymes
2. fuel
3. dependent of temperature
4. inhibitor
5. warmer
6. chemical reaction
7. fire prevention
8. no activation energy
9. enzymes
10. heat
11. A
12. provide activation energy
13. add a catalyst
14. d removes oxygen
Answer:
Lacks the right key to unlock many cells.
Explanation:
Avian influenza (H5 N1) rarely transmitted from poultry to humans because it lacks the right key to unlock many cells in the upper respiratory tract so due to this action the virus is rarely transmitted to humans. Sometimes it is lethal to humans due to absence of antibodies for this type of virus. It is rarely spread from person to person due to inability to enters the other human body.
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.
