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Chapter 1 and 2
Characteristics and Molecules of Life
| Question | Answer |
|---|---|
| The 7 characteristics of living things | 1. Are organized 2. Acquire materials and energy 3. Reproduce 4. Respond to stimuli 5. Are homeostatic 6. Grow and develop 7. Have the capacity to adapt |
| Maintaining relatively constant body temperature is an example of __________, which is a characteristic of living things | homeostasis |
| Natural selection is an example of which characteristic of life? | Ability to Adapt |
| This is the largest category in systematics | Domain |
| Eukarya, Bacteria, and Archaea belong to which systematic category? | Domain |
| These organisms are characterized by their ability to survive in extreme environments | Archaea |
| The zone of air, land, and water at the surface of the Earth where living organisms are found | Biosphere |
| All the members of a species within a particular area is called: | Population |
| All the different populations in the same area is called: | Community |
| These elements make up 95% of all living things | Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorous, Sulfur |
| Type of chemical bond where atoms share electrons | Covalent Bond |
| If the sharing between two atoms is unequal, the covalent bond is described as... | Polar |
| A bond that occurs between a slightly positive hydrogen atom of one molecule and a slightly negative atom of another molecule (or same molecule) | Hydrogen Bond |
| 7 properties of water that makes it critical to life | polar molecule with hydrogen bonds, has a high heat capacity, has a high heat of vaporization, water is a solvent, water molecules are cohesive and adhesive, has a high surface tension, frozen water is less dense than liquid water |
| Defined as: large organic molecules formed by combining monomers (repeat) | polymers |
| Reactions where an -OH and -H are removed as a water molecule (while building larger molecules) | Dehydration Reaction |
| Organic molecules that plays a structural role in cells; also serves as a source of quick energy (when consumed as food) | carbohydrates |
| organic molecule that is a major component of the plasma membrane in eukaryotic cells; also a source of long-term energy when consumed as a food | lipids |
| The name of the structure when hydrogen bonding between amino acids causes a polypeptide to form an alpha-helix or beta-pleated-sheet | Secondary Structure |
| This level of protein structure occurs when two or more polypeptides join to form a single protein | Quaternary Structure |
| In complementary base pairing of DNA, Adenine always pairs up with... | Thymine |
Created by:
RRCsraposo
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