Can you eat the skin of all fruit and vegetables? Some fruits have a poisonous skin that it is better to avoid. The skin of some vegetables is too difficult to chew. What is a fruit? A fruit is a mature, ripened ovary, and the contents of the ovary. The ovary is the female part […]
#498 Can you eat the skin of all fruit and vegetables? Read More »
Why are carrots orange? Because they contain carotenoids, which are orange. Carotenoids are organic pigments that are produced by plants, algae, and some bacteria and fungi. They can be found in vegetables such as pumpkins, carrots, corn, and in animals such as canaries, lobsters, and flamingoes. In plants and algae, carotenoids absorb sunlight for photosynthesis.
#466 Why are carrots orange? Read More »
Why do our stomachs grumble? Because the muscles in the stomach and small intestines are contracting and there is no food in there to muffle the sound. Our stomachs rumble a lot of the time, but we usually cannot hear it because the food in our stomachs and small intestines soak up the sound. The
#429 Why do our stomachs grumble? Read More »
How does an air fryer work? A fan circulates hot air at high speed which cooks the food. Firstly, let’s look at how food cooks when it is fried. With deep-frying, food is submerged in oil that is heated to between 177 and 191˚C. That seems pretty hot, but it is far below the boiling
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Why do we get a headache when we are dehydrated? You get a headache when you are dehydrated because your brain shrinks and pulls away from the sides of your skull. The human body is about 60% to 70% water. Some parts of the body contain more water than other parts. The blood and the
#400 Why do we get a headache when we are dehydrated? Read More »
How does caffeine stop you from feeling sleepy? Caffeine stops you from feeling sleepy by blocking the action of adenosine on its receptors. So, why do we get sleepy? A lot of research has been done into why we need to sleep, but nobody has come up with an answer. We obviously do because if
#396 How does caffeine stop you from feeling sleepy? Read More »
Why does drinking milk help after eating spicy food? Milk helps after eating spicy food such as chili because it contains something called casein. When you eat spicy food, the oily capsaicin molecules attach themselves to nerve receptors in your mouth. These receptors then release a protein called TRPV1, which alerts your brain to heat.
#394 Why does drinking milk help after eating spicy food? Read More »
Why do mustard and wasabi make your nose hurt? Mustard and wasabi hurt your nose instead of your tongue and throat because the oil in them turns into a gas. Spices such as mustard and wasabi affect us in a very different way to chili. When you eat a spicy chili, the capsaicin in the
#390 Why do mustard and wasabi make your nose hurt? Read More »
What is chewing gum made of and what happens if you swallow it? These days, chewing gum is just a gum base with sweeteners and a plasticizer. You can swallow it without any harmful effects. Humans have used something to chew on for thousands of years. A 5,000-year-old lunch of birch bark tar with toothmarks
#384 What is chewing gum made of and what happens if you swallow it? Read More »
How much maple tree sap do you need to make 1 liter of maple syrup? It takes about 40 liters of sap to make 1 liter of maple syrup. Maple syrup is made by taking the sap from sugar maple, black maple, or red maple trees. The trees are tapped when they are about 30
#368 How much maple tree sap do you need to make 1 liter of maple syrup? Read More »
