Answer:
11) A. The optimum pH of an enzyme is 6.6
12) C. A control group
Weakening of it is what it does
Cations, lose
Explanation:
Positive ions are cations and they result when an atom lose electrons.
An atom is made up of subatomic particles:
- Protons are positively charged particle in the nucleus of the atom
- Neutrons carry no charges and they share the nucleus with protons.
- The electrons are negatively charged.
- When an atom loses an electron, it becomes a positive ion because the number of protons is now more than the number of electrons.
- An anion forms in a reverse way.
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Answer:
It connects the brain to the rest of the body.
