A granum (if you have 1 stack of thylakoids, this is singular). Also, if you have more than 1 stack of these they are collectively referred to grana.
Answer:
without the ability to measure, it would be difficult for scientists to conduct experiment of form theories and also the chemical industry, it is also essential in farming, engineering, construction, manufacturing, commerce and numerous other occupation and activities.
Answer: The immune system
Explanation:
The immune system is a complex network of proteins and cells that defends the body against infection or any invasion. The human defense system in the body is actually made up of entire organs and vessel systems like the lymph vessels. The immune system is made up of organs that control the production and maturation of certain defense cells.
Initially, all living things are subjected to attack from disease causing agents. Even bacteria, so small that more than a million could fit on the head of a pin, have systems to defend against infection by viruses. This kind of protection gets more sophisticated as organisms become more complex.
Answer: <u>IONIC BONDING- </u>When a metallic atom reacts with a non metallic atom, then it forms an ionic bond. For example, Sodium (Na) is a metal that reacts with a non-metal Chlorine (Cl) forming Sodium-chloride (NaCl).
<u>COVALENT BONDING-</u> It is a chemical bonding that occurs when any two non-metallic atoms reacts with one another, by sharing one pair of electrons. For example, Carbon Dioxide (CO₂).
