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Chemicals of Life

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Questions and Answers

What are the backbone elements of organic molecules?

Hydrogen atoms
Carbon atoms (correct)
Nitrogen atoms
Oxygen atoms

Which type of chemical bond is important in biological molecules?

Hydrogen bond
Covalent bond (correct)
Ionic bond
Van der Waals bond

Which type of molecules usually lack carbon?

Organic molecules
Ionic molecules
Covalent molecules
Inorganic molecules (correct)

What are the examples of inorganic molecules mentioned in the text?

<p>CO2, NH3, H2O, O2, H2 (C)</p> Signup and view all the answers

What are the important elements in biomolecules?

<p>Carbon, hydrogen, oxygen, nitrogen (A)</p> Signup and view all the answers

Flashcards

Backbone of Organic Molecules

Carbon atoms form the structural framework of organic molecules, allowing for diverse and complex structures.

Covalent Bond

A chemical bond where atoms share electrons, essential for the stability and structure of biological molecules.

Inorganic Molecules

Molecules that generally do not contain carbon as a primary component; they are often simpler in structure than organic molecules.

Examples of Inorganic Molecules

Carbon dioxide (CO2), ammonia (NH3), water (H2O), oxygen (O2), and hydrogen gas (H2). These are vital for biological processes but lack complex carbon structures.

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Key Elements in Biomolecules

Carbon (C), hydrogen (H), oxygen (O), and nitrogen (N). These elements are essential for building proteins, carbohydrates, lipids, and nucleic acids.