The Chemical Basis Of Life
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Which of the following subatomic particles are NOT found in the nucleus of an atom?
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Protons and neutrons
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Protons and electrons
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Only neutrons
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Only protons
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Only electrons
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This is a biology quizz, it's about about atoms, molecules, and compounds. A little review in what we know in chemestry.
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- 2.
Organic compounds
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Always contain nitrogen
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Always contain heliem
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Always contain oxygen
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Always contain carbon
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Always contain phosphorus
Correct Answer
A. Always contain carbonExplanation
Organic compounds are defined as compounds that contain carbon atoms. Carbon is the key element in organic chemistry, forming the backbone of many organic molecules. It is the unique properties of carbon, such as its ability to form covalent bonds with other elements, that allow for the diverse range of organic compounds found in nature. Therefore, it can be concluded that organic compounds always contain carbon.Rate this question:
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- 3.
What cells lack a membrane-bound nucleus?
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Plant
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Animal
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Prokaryotic
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Eukaryotic
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Fungal
Correct Answer
A. ProkaryoticExplanation
Prokaryotic cells lack a membrane-bound nucleus. Unlike eukaryotic cells, which have a distinct nucleus enclosed within a membrane, prokaryotic cells have their genetic material (DNA) floating freely in the cytoplasm. Prokaryotic cells include bacteria and archaea, and they are characterized by their simplicity and smaller size compared to eukaryotic cells. This lack of a nucleus allows for more efficient and rapid gene expression and adaptation to changing environments.Rate this question:
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- 4.
Which of the following is a trace element found in living organisms?
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Crabon
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Hydrogen
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Calcium
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Oxygen
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Nitrogen
Correct Answer
A. CalciumExplanation
Calcium is a trace element found in living organisms. It plays a crucial role in various biological processes such as muscle contraction, nerve function, and blood clotting. It is also an essential component of bones and teeth, providing strength and structure. While carbon, hydrogen, oxygen, and nitrogen are also important elements in living organisms, calcium is specifically classified as a trace element due to its lower concentration in comparison to major elements like carbon, hydrogen, and oxygen.Rate this question:
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- 5.
What are glucose and fructose?
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Isotopes
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Isomers
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Inorganic compounds
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Lipids
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Polysaccharides
Correct Answer
A. IsomersExplanation
Glucose and fructose are both isomers, which means they have the same molecular formula but different structural arrangements. Isomers have the same atoms but are arranged differently, resulting in different chemical properties and characteristics. In the case of glucose and fructose, they both have the same number and types of atoms (carbon, hydrogen, and oxygen), but the arrangement of these atoms differs, giving them different properties and functions.Rate this question:
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Current Version
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Feb 23, 2023Quiz Edited by
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Dec 08, 2009Quiz Created by
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