Answer: True.
Explanation:
Nitric oxide(N,O) is a signaling molecule produced by NO synthase which is a transmitter in the nervous system. In the central nervous system NO is generated by the activation of glutamate receptor. When it is produced, it diffuses out of the cells and act on neighbouring cells.
C) they are both transport systems.
Answer:
The correct answer is- Leukopenia
Explanation:
White blood cells are present in our blood which protect our body from foreign antigens like bacteria, viruses, etc. When these white blood cells decrease abnormally in number then this condition is called leukopenia.
White blood cells contain different cell which protect our body from different type of infections. So there are different types of leukopenia according to the particular white blood cell whose number became low.
For example when neutrophils number in the body decrease it is called neutropenia. So the correct answer is leukopenia.
C) I and III only just got this question on usa test prep and therefore i'm right
The answer to this is C because humans don't have cell walls and if you are looking at an onion it has a cell wall because it is a plant.
