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12 Cards in this Set
- Front
- Back
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What are the levels of organization in Human Biology?
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CELL, is the smallest unit of life.
TISSUE, group cells that work together to do a particular function. ORGANS, a group of tissues that work together to do a particular function such as heart, pancreas, intestines. ORGAN SYSTEM, 2 or more organs working together to do a particular function like the digestive, respiratory or nervous system. ORGANISM, (itself) Individual living thing. POPULATION, A group of organisms of same species in same place. COMMUNITY, A group of population of different species. ECOSYSTEM, All the organisms in a given area plus all the nonliving matter and energy. BIOSPHERE, All ecosystems combined. Occupied by living organisms, plus those organisms. |
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What are the types of cells that exist in the living world?
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1)Prokaryote: Organisisms that lack a nucleus; a single-celled organism, such as bacteria.
2) Eukaryote: Organisms made of cells with a nucleus and internal membrane-bound organelles. Animals, plants, protists and fungi are eukaryotes. |
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What are the classifications or domains of the living world?
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I- Eukarya
Organisms whose cells have a nuclei. Eukaryote cells can be multi-cellular or unicellular. Eukarya consists of Plants, animals, fungi, and protists. II- Eubacteria Single-celled prokaryotic organisms in the kingdom Monera, which consists of bacteria, the most simplest, smallest successful organisms on Earth. III- Archaea Also single-celled prokaryotes. |
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How would we classify the eukaryote in the Domain Eukarya?
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Animals, plants, and Fungi, consist of multicellular organisms. Classifications is largely based on the organism's life cycle, structure, and the way it gets nutrition.
1-Animals: Are multicellular, eats other organisms and is mostly mobile. 2-Plants: Are multicellualar, has green pigment called chlorophyll that captures the sun's energy and converts it into food through a process called photosynthesis. 3-Fungi: (yeasts, molds, & mushrooms) are decomposers, gets energy from rotting material. 4-Protists: (protozoa, algae, and slime molds) |
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What features make humans unique?
Describe 4. |
1) Complex language. Humans have both verbal and written language.
2) Bipedalism. Humans walk on 2 feet. 3) Opposable thumbs. Allows for humans to make use of hands in a very precise manner. 4) Larger brain size (3lb). Gives humans more capacity to think. |
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What are some characteristics of life?
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1- composed of cells.
2- reproduce/grow. 3- energy and raw materials are needed to live. 4- evolve. 5- made of DNA. 6- Responds to its' environment. |
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What is the definition of Science?
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Science is the study of the natural world, which includes all matter and all energy.
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Where does the word Biology come from and what does it mean?
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Biology comes from the Greek words bios: life & logos: science. Biology is the study of living organisms and life's processes. It is the study of life.
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What is a cell?
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It is the smallest unit that shows all the characteristics of life. All cells come from only existing cells.
unicellular = one cell. multicellular = many cells and even many different types of cells. |
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What is the Scientific Method?
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The Scientific method is a way of testing statements about the natural world (hypothesis) by trying to prove them false.
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What are the 4 steps of the Scientific Method and what do they mean?
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Step 1-
Observe and Generalize. Step 2- Write a hypothesis. A hypothesis is a tentative explanation for a question that can be tested. Step 3- Make a prediction that can be tested. A prediction is a guess to your question that can use "If...then" statement. Step 4- Experiment and observe. If experiment works than hypothesis is supported if it doesn't than another hypothesis must be written. |
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What is a controlled experiment?
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A controlled experiment are tests that are controlled under specific conditions where all variables are accounted for. Only one variable, which is the one of interest, is controlled.
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