Answer:
D.
Explanation:
Improper dosage, poisoning, improper labeling, are all typical problems.
The right answer is C
I will explain the law of conservation of energy by photosynthesis:
The conservation principle states that the energy of an isolated system (chlorophyll) can not vary.
On the other hand, if the system is not isolated (it is in the nature, exposed to the sun), that is to say if it can exchange with the outside, (the chlorophyll will absorb the photons put by the Sun). Thus the system transforms this absorbed energy into another form (glucose in the case of photosynthesis).
Answer: A
Explanation: In general, this process involves a "parent" cell splitting into two or more "daughter" cells. In this way, the parent cell can pass on its genetic material from generation to generation.
Answer:
1 prophase, 2 metaphase, 3 anaphase, and 4 telophase.
Explanation:
Answer:
Option (e).
Explanation:
The two main types of immune cells are B-cells and T-cells. B cells are antibody producing cells where as T cells are antigen presenting cells.
A scientist claimed that a new blood borne virus can be indestructible by CD8+ cytotoxic T cells and kills many cells. But the medical community quickly denounces the warning as irrelevant because only CD8+ cells are not the only cells that are capable of removing viral infection. Natural killer cells are also involved in virus killing. The blood borne virus can not kill million cells as they are involved in the difficult mode of transmission.
Thus, the correct answer is option (E).