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Life Science Final


Scientific Method To solve a problem, scientists follow these series of steps.
Organ System A group of organs working together to perform a certain function.
Nucleus Usually, the largest organelle in a cell.
Carbon Organic compounds always contain this...
Osmosis The passive transport of water through a membrane.
Interphase Most of the life of any cell is spent in this period of growth...
DNA The chromosomes in the nucleus of a cell contain this code...
Diploid A cell that has two of every kind of chromosome.
Sex cells Haploid numbers of chromosomes are usually found in this part of an organism....
Niche The role a species plays within a community.
Population density The number of individuals in a given area.
Limiting factor Anything that restricts the number of individuals living in a population.
Respiration Which process uses oxygen in plants, algae, and animals?
worms a biotic factor
Fungi Not a nonliving feature of the environment.
carnivore eats consumers
food web a model that shows the complex feeding relationships among organisms in a community.
organism any living thing
cell smallest unit of an organism that can carry on life functions
habitat place where an organism lives and that provides food, shelter, moisture and temperature needed for survival.
ecosystem all the living organisms that live in an area and the nonliving features of their environment.
hypothesis prediction that can be tested
homeostasis regulation of an organisms internal life maintaining conditions.
biotic features of the environment that are alive or were once alive.
scientific method procedures used to solve problems and answer questions.
carbon cycle model describing how carbon molecules move between the living and nonliving world.
water cycle model describing how water moves from earths surface to the atmosphere and back to the surface again.
organelles structure in the cytoplasm of a eukaryotic cell can act as a storage site, process energy, move materials, or manufacture substances.
climate average weather conditions of an area over time.
abiotic nonliving, physical features of the environment
cell membrane protective outer covering of all cells that regulates the interactions between the cell and the environment.
cytoplasm constantly moving gel like mixture inside the cell membrane
mitochondria cell organelle that breaks down food and releases energy
chloroplast green, chlorophyll containing, plant cell organelle that uses light energy to produce sugar from carbon dioxide.
diffusion a type of passive transport in cells in which molecules move from areas where there are more of them to areas to where there are fewer of them.
osmosis a type of passive transport that occurs when water diffuses through a membrane
cell theory states that all organisms are made up of one or more cells, the cell is the basic unit of life, and all cells come from other cells.
organic compound compounds that always contain hydrogen and carbon; carbohydrates, lipids, proteins, and nucleic acids are organic compounds found in living things.
nucleus organelle that controls all the activities of a cell and contains heredity material made of proteins and DNA
equilibrium occurs when molecules of one substance are spread evenly throughout another substance
zygote new diploid cell formed when a sperm fertilizes an egg; will divide by mitosis and develop into a new organism.
photosynthesis process by which plants use light energy to produce a simple sugar from carbon dioxide and water and give off oxygen.
mitosis cell process in which the nucleus divides to form two nuclei identical to each other, and identical to the original nucleus, in a series of 4 steps.
haploid cell that has half the numbers of chromosomes as body cells,
chromosome structure in a cells nucleus that contains hereditary material
cellular respiration process by which producers and consumers release stored energy from food molecules; series of chemical reactions used to release energy stored in food molecules.
diploid cell whose similar chromosomes occur in pairs
meiosis reproductive process that produces 4 haploid sex cells from one diploid cell and ensures offspring will have the same nnumber of chromosomes as the parent.
Created by: Iglehart