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Biology 123 Exam 1
- What are the 5 characteristics of life?: 1. respond
- Reproduce
- Gross & Develop
- Adaptations
- Obtain & use energy
- What is the lowest level of organization?: Atomic of Molecular Level - As Molecules come together and interact they form organelles or structures within the cell.
- What are the 2 types of Cells?: Single celled organisms & Multicellular organ- isms
- What is the lowest level of life considered alive?: Cell
- How is an organ formed?: When two or more tissues work together to perform a specific job.
- What forms an organ system?: When 2 or more organs and or structures work together to carry out functions they form a organ system.
- Define a population: A population is a group of organizms of the same species living together in one area
- Define a community: Different species living together in the same area
- How can we refer to the ecosystem?: The relationship between a community and its physical enviorment.
- Define Biome: A Major division of the earths surface largely determined by climate but characterized by the plants and animals inhabiting it.
- What makes up the biosphere?: All regions on the planet inhabited by organ- isms.
- Where does all energy come from?: The sun
- What does light energy convert into?: A Chemical energy form, such as starch or sugar by the process of photosynthesis.
- Plant eating organisms are known as?: Herbivores
- Meat eating organisms are known as?: Carnivores
- Give at least 3 examples of Homeostasis: Body Temperature Maintaining 98. Childbirth Contractions The body sweating in order to cool off.
- State the levels of Bioloical organizations from Atoms---> Biosphere: - Atoms, Molecule, Cell, Tissue, Organ, Organ System, Oganism, Population, Com- munity, Ecosystem, Biosphere.
- Define Natural Selection.: Natural selection refers to the survival of organisms that have an advantage over other organisms. Usually due to genetic changes that allow adaption in the enviorment easier passed to subsequent organisms.
- What is the flow of energy?: Sun->Plants->Herbivores->Carnivores.
- All Living things can be grouped into three ?: Domains
- Name the three Domains: Archaea (Prokaryotes) Bacteria (Prokaryotes) Eukarya (Eukaroytes)
- What are the four kingdoms within Eukarya?: 1.Protista
2.Fungi 3.Plantae 4.Animilia
- What are the components of the Scientific Method: 1.Obervation 2.Hypothesis 3.Experiments, Observations & Data 4.Conclusion
- Define DNA: DNA is the genetic material that contains the set of instructions (genes) that determine the characteristics of the organism.
- Define Heredity: When DNA is replicated and passe donto the future genera- tions so the characteristics of the parents are passed onto the offspring.
- Define Responsiveness: When the living organisms detect changes in the enviorment.
- Define Adaptability: The ability of an organism to make changes in response to changes in its enviorment.
- What is Evolution?: The change of species overtime. Changes only occur in
other words, cells arise only by division of a previously existing cell. Spontaneous generation does not occur. Cells do not suddenly appear.
- All living organisms from bacteria to humans contain ?: DNA (de- oxyribonucleic acid). 34. The entire set of genes that determines the characteristics of an organism is called the ?: Genome
- Who proposed the first theory of Evolution? What Year?: The theory of evolution was first proposed by Charles Darwin in 1859. 36. is the study of the interaction of organisms with their environment.- : Ecology
- The levels of organization are?: Ecosystem Community Population
Individual Organism Organ system Organ Tissue Cell Organelle Molecule Atoms
38. A is necessary in order to categorize and organize organisms.- : classification system 39. In order for scientists to be able to share and discuss information regarding organisms there must be a systematic way of identifying any organism, This is a : Classification Scheme
Cuts : Class Open: Order Five : Family Green : Genus Snakes: Species
- is a population of individuals that actually interbreed or have the potential to interbreed with one another and produce viable, fertile off- spring.: Species
- The six stages of scientific investigation are.: 1.Observation-New observa- tions Made 2.Hypothesis- Input from various sources used to make a testable statement 3.Predicting- 4.Testing 5.Controls 6.Conclusion
45. is the study of the evolutionary relationships between organisms.- : Systematics
- List the levels of taxonomic classification from most inclusive to least inclusive.: Category/Human Name Domain-Eukarya Kingdom-Animalia Phylum-Chordata Class-Mammalia Order-Primates Family-Hominidae Genus-Homo Species-Sapiens
- How can we define life?: Although living things are diverse, they have certain characteristics in common. Living things are organized, and their levels of organi- zation extend from the cell to ecosystems, need an outside source of materials and energy, maintain homeostasis, respond to external stimuli, reproduce and develop,
