Answer:
Answer is true.
Explanation:
That calories that remain when the amount of nutrients required by the body are met is the discretionary calories.
These calories are good and essential because they are useful to the body when it is in need of calories, usually after exercise or rigorous work.
They are derived from foods that are rich in fat, such as cheese, milk, yoghurt etc.
The nervous system signals the endocrine system to release
hormones in response to a stimulus.
The nervous system respond to stimulus through action potentials and neurotransmitters and they signals the endocrine system to secrete hormones.
The endocrine system is responsible for secreting hormones into the blood which is transported to the target cells. These hormones are responsible for metabolism , growth and response to stress. The hormones secreted provide feedback to the brain so as to affect neural processing.
1. Virus attaches to the bacterium
2. Virus injects into the bacterium
3. Viral DNA uses cellular machinery to reproduce itself
4. Compounds of the viral proteins coat are reproduced from genes in the viral DNA
5. Viral particles self assemble into new viruses
6.Viruses burst out, killing the host cell