<span>Many doctors of medicine, and wise people, in general,
claim that laughter is the best medicine. It is a powerful antidote to stress,
conflict and physical and psychical pain. Laughter can relax our bodies and
boost our immune system. It is also very good for the health of our hearth,
because it is increasing the blood flow, which protects us from a hearth attack and other cardiovascular diseases. Laughter also help our mental health by
adding joy to our life, easing anxiety and fears, improving mood, relieving stress, etc. So, the message is: you should find funny people, or at least
funny shows, books, or movies, and laugh as much as you can...</span>
Answer:
D. The prepackaged meats have modified atmosphere packaging that has excluded oxygen gas, which would promote the growth of spoilage organisms.
Explanation:
Meat is an animal products that serves as a source of protein for humans. It is very important that meat is well preserved to prevent the consumption of spoilage microorganisms.
Meats are prepackaged for the following reasons.
a. To keep it fresh: Meat comes with a bright red colour due to the presence of myoglobin which is a protein in meat. This colour makes the meat attractive to consumers when they want to purchase it. When myoglobin is exposes to oxygen, it reacts with the atmospheric oxygen giving the meat a dullish brown colour. This makes the meat less attractive .
In other to preserve this fresh meat colour, meat prepackaged using modified atmospheric packaging for example vacuum packaging in which oxygen is absent. This preserves the colour of the meat and keeps it fresh.
2. Prevent the growth of spoilage microorganisms: Meat contains proteins and the proteins tend to be attacked by spoilage microorganisms, for examples bacteria such as Listeria monocytogenes. In order to prevent this, meat is prepackaged with modified atmospheric packaging thereby making it hard for spoilage microorganisms to grow.
Answer:
The correct answer will be mitotic spindle formation.
Explanation:
Mitosis is a mode of cell division which is a very complex process. The mitosis includes the microtubules which form the mitotic spindles during cell divisions.
The mitotic spindle helps the separation of the chromatids through tread-milling during anaphase and telophase, The mitotic spindle formation can be inhibited by an anticancer drug called taxol which interfere with the formation by binding to tubulin and preventing compaction of the microtubules,
Thus, mitotic spindle formation is the correct answer.
