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Properties of Living Things

QuestionAnswer
Macromolecules : What basic elements make up living things? Carbon, oxygen, hydrogen, nitrogen.
What macromolecules do small molecules form? Polysaccharides, proteins, fats, nucleic acids.
What are the seven characteristics of life? - Display order - Harness & use energy - Respond to stimuli - Reproduce - Grow & develop - Maintain homeostasis - Evolve
Cellular Structure: What are the basic cellular requirements for life? - Must be separated from surroundings by a membrane - Must enclose structures and chemicals in fluid
Growth & Metabolism: What is metabolism? Transfer of energy from one form to another.
Reproduction: What are two types of reproduction mentioned? Binary fission and sexual reproduction.
Heredity: What must happen to DNA before an organism divides? DNA must divide first.
Evolution: What happens to populations over generations? They change genetically over time.
Homeostasis: What is homeostasis? Maintaining a stable internal environment.
What is negative feedback? A response that cancels the original stimulus.
What is positive feedback? A response that increases the original stimulus.
Receptors: Name the types of receptors and what they detect. Chemoreceptors: chemicals Osmoreceptors: osmolarity Tactile receptors: touch/pressure/vibration Baroreceptors: blood pressure Photoreceptors: light
Receptors: Name the types of receptors and what they detect(continued) Mechanoreceptors: stretching Proprioceptors: body position Nociceptors: pain Thermoreceptors: temperature
Created by: oliviavanwort
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