Ques: Q: What are the organic compounds that the body needs in small amounts to function properly; humans need 13 different ones? Read this paragraph and choose the correct option from the provided answers: Vitamins are organic compounds that the body needs in small amounts to function properly. Humans need 13 different vitamins. Some of them are listed below ( Table below ). The table also shows how much of each vitamin you need every day. Vitamins have many roles in the body. For example, Vitamin A helps maintain good vision. Vitamin B 9 helps form red blood cells. Vitamin K is needed for blood to clot when you have a cut or other wound. Choices: - minerals - proteins - nutrients - vitamins A:
Ans: vitamins

Ques: Q: What are small planets in our solar system called? Read this paragraph and choose the correct option from the provided answers: Eris is the largest known dwarf planet in the solar system. It is 27 percent larger than Pluto ( Figure above ). Like Pluto and Makemake, Eris is in the Kuiper belt. But Eris is about 3 times farther from the Sun than Pluto. Because of its distance, Eris was not discovered until 2005. Early on, it was thought that Eris might be the tenth planet. Its discovery helped astronomers realize that they needed a new definition of "planet. " Eris has a small moon, Dysnomia. Its moon orbits Eris once about every 16 days. Choices: - scrub planets - Tiny planets - light planets - dwarf planets A:
Ans: dwarf planets

Ques: Q: Electrons in covalent compounds are shared between the two atoms, unlike the case in what type of bonds? Read this paragraph and choose the correct option from the provided answers: The two materials do have at least one thing in common. The atoms in the materials are held together by covalent bonds. These bonds consist of electrons shared between two or more atoms. Unlike ionic bonds, where electrons are either lost or gained by an atom to form charged ions, electrons in covalent compounds are shared between the two atoms, giving rise to properties that are quite different from those seen in ionic materials. Choices: - horizontal bonds - weak bonds - soluble bonds - ionic bonds A:
Ans: ionic bonds

Ques: Q: What is transferred in an acid-base reaction Read this paragraph and choose the correct option from the provided answers: Acid-base reactions involve a transfer of a hydrogen ion instead of an electron. Acid-base reactions, like the one below, are also not redox reactions. Choices: - bonding ion - friendly ion - calcium ion - hydrogen ion A:
Ans:
hydrogen ion