<span><span>A. </span>B-cells
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Which type of white blood cells is produced in the thymus and destroys the
cell membranes of bacteria are B-cells. These b-cells are also known and called as B
lymphocytes. Their function primarily is to create antibodies which combats
antigens such as bacteria. They are also responsible for immune regulatory
indications –cytokines. In contrast, T-cells are a type of white blood cells
that combat any substance from the inside or within the body.
Question: <em>An exercise that causes the muscle to contract against an external force is called?</em>
Answer: Resistance training. The name is pretty self-explanatory, resistance; going against an external force? This exercise mains in increasing your strength, endurance, and hypertrophy and is used by many bodybuilders who are trying to build up muscle fast.
Uplifting Note: Breakfast is the meal you share with everyone since you're all starting the day together, go and plan something tasty!
The most common and the most delicious substance are chocolates. Chocolates have plenty of chemical substance that could calm your brain and affects your body. It has Phenylethylamine substance that is actually produced by our brain when we are interested in something or when we are in love with someone. Chocolates are healthy.
