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General Biology: Organic Chemistry and Energy Molecules

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Termini in questo insieme (20)

  • What are organic compounds?

    Organic compounds are molecules primarily made of carbon atoms bonded to hydrogen, oxygen, nitrogen, or other elements, forming the basis of life.

  • What are isomers?

    Isomers are molecules with the same molecular formula but different structural arrangements.

  • Name the main types of isomers.

    The main types are structural isomers (different connectivity) and stereoisomers (same connectivity, different spatial arrangement).

  • What is a functional group in organic chemistry?

    A functional group is a specific group of atoms within a molecule that determines its chemical properties and reactions.

  • List common functional groups and their general functions.

    Examples include hydroxyl (-OH) (polar, forms hydrogen bonds), carboxyl (-COOH) (acidic), amino (-NH2) (basic), and phosphate (-PO4) (energy transfer).

  • What are hydrocarbons?

    Hydrocarbons are organic molecules consisting entirely of carbon and hydrogen atoms, often serving as energy sources.

  • Describe the difference between saturated and unsaturated hydrocarbons.

    Saturated hydrocarbons have only single bonds; unsaturated hydrocarbons contain one or more double or triple bonds.

  • What is ATP?

    ATP (adenosine triphosphate) is the primary energy carrier in cells, storing and transferring energy for cellular processes.

  • What is ADP?

    ADP (adenosine diphosphate) is the lower-energy molecule formed when ATP loses one phosphate group during energy release.

  • How does ATP release energy?

    Energy is released when the bond between the second and third phosphate groups in ATP is broken, converting ATP to ADP and inorganic phosphate.

  • What role do functional groups play in biological molecules?

    Functional groups determine the chemical behavior and interactions of biological molecules, affecting solubility, reactivity, and bonding.

  • Give an example of a structural isomer.

    Butane and isobutane are structural isomers; both have the formula C4H10 but different carbon chain arrangements.

  • What is the significance of stereoisomers in biology?

    Stereoisomers can have different biological activities because their 3D shapes affect how they interact with enzymes and receptors.

  • What is the general formula of hydrocarbons?

    Alkanes follow the formula \(C_nH_{2n+2}\), where n is the number of carbon atoms.

  • Why is ATP called the energy currency of the cell?

    Because it stores and provides energy for many cellular functions through reversible phosphate bond hydrolysis.

  • What happens to ADP after energy is used?

    ADP can be recycled back into ATP by adding a phosphate group during cellular respiration or photosynthesis.

  • How do functional groups affect molecule polarity?

    Polar functional groups like hydroxyl increase molecule polarity, affecting solubility and interactions with water.

  • What is the function of the phosphate group in ATP?

    The phosphate groups store potential energy in their bonds, which is released when broken.

  • Explain the difference between cis and trans stereoisomers.

    Cis isomers have similar groups on the same side of a double bond; trans isomers have them on opposite sides.

  • What is the role of hydrocarbons in biology?

    Hydrocarbons serve as energy-rich molecules and structural components in lipids and other biomolecules.