Ques: Q: In a fullerene, what atoms are bonded to three other atoms in a soccer ball pattern? Read this paragraph and choose the correct option from the provided answers: In a fullerene, carbon atoms are bonded to three other atoms in a soccer ball pattern. The bonds are weak, so fullerenes can dissolve and form solutions. Choices: - hydrogen - oxygen - positive - carbon A:
Ans: carbon

Ques: Q: What element is the most common element in the universe? Read this paragraph and choose the correct option from the provided answers: An element is a pure substance. It cannot be separated into any other substances. There are more than 90 different elements that occur in nature. Some are much more common than others. Hydrogen is the most common element in the universe. Oxygen is the most common element in Earth's crust. Figure below shows other examples of elements. Still others are described in the video below. Choices: - carbon - helium - nitrogen - hydrogen A:
Ans: hydrogen

Ques: Q: Give an example of air pollution while painting indoors. Read this paragraph and choose the correct option from the provided answers: If you are painting indoors, there are more important concerns than just getting messy. You should also be concerned about breathing in the fumes from the paints. Making sure to get plenty of fresh air while painting is very important. Paint fumes can have serious health effects. Paint fumes are just one example of indoor air pollution. Choices: - fuel fumes - gas fumes - variety fumes - paint fumes A:
Ans: paint fumes

Ques: Q: Dietary proteins are broken down into what components when food is digested? Read this paragraph and choose the correct option from the provided answers: Proteins in the diet are necessary for life. Dietary proteins are broken down into their component amino acids when food is digested. Cells can then use the components to build new proteins. Humans are able to synthesize all but nine of the twenty common amino acids. These nine amino acids, called essential amino acids , must be consumed in foods. Like dietary carbohydrates and lipids, dietary proteins can also be broken down to provide cells with energy. The amino acids regarded as essential for humans are phenylalanine, valine, threonine, tryptophan, isoleucine, methionine, leucine, lysine, and histidine. Additionally, cysteine, tyrosine and arginine are required by infants and growing children. Choices: - organic acids - protein acids - polymer acids - amino acids A:
Ans:
amino acids