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Science PASS

tightly coiled structures in the cell nucleus that contain the organism's genetic information chromosomes
the organ through which solid waste is eliminated from the body anus
a large movement of ground, including rock, soil, and other debris, that moves down a slope due to gravity landslide
a representation of something that is used to show or explain how it functions model
a condition (other than injury) that does not allow the body to function normally disease
involuntary muscle tissue that controls movements that take place within the body smooth muscle
an animal that a predator hunts prey
an overflow of water onto land that is normally dry flood
the tendency to reflect light luster
a measure of the mass of a substance compared to its volume density
the area beneath the soil's surface in which water can collect zone of aeration
any factor that can affect the outcome of a scientific investigation variable
the process by which scientists ask questions and then look for answers scientific inquiry
a noninfectious disease that affects the respiratory system asthma
a group of two or more organs that work together to perform a specific function organ system
anything that limits the number of individuals an ecosystem can support limiting factor
a disease in which skin cells are damaged and grow out of control skin cancer
a long, muscular tube where most chemical digestion takes place small intestine
a graph that uses bars to compare amounts of different items bar graph
a change that alters the physical properties of a substance without changing the composition of the substance physical change
a group of organisms that share most characteristics and are able to breed with one another species
an energy resource that formed from the remains of organisms that died millions of years ago fossil fuel
a solid substance that forms when two solutions are combined precipitate
the number of births in a population in a certain period of time birth rate
an observation reported using numbers or measurements quantitative observation
a segment of DNA that determines a particular trait gene
human immunodeficiency virus; the virus that causes AIDS HIV
an organism's role in its environment niche
the part of the brain that controls thoughts and voluntary actions and receives the sensations produced by your senses cerebrum
to reprocess a resource to make a new product recycle
the part of the brain that controls balance and coordination cerebellum
the organ system that filters cellular wastes, toxins, and excess water from the body excretory system
a substance that is broken apart or joined with another substance by a chemical reaction reactant
a diagram that shows the decrease in available energy at each trophic level in an ecosystem energy pyramid
the organ system that exchanges gases between the blood and the air respiratory system
an infectious disease that attacks and weakens the immune system AIDS
the movement of individuals out of an area emigration
a noninfectious disease of the nervous system that causes tremors and difficulty with movement Parkinson's disease
a particle that forms when two or more atoms are held together by a chemical bond molecule
a portion of a group that is studied in order to learn about the whole group sample
any nonliving part of an environment abiotic factor
a visual display that organizes data into easy-to-see columns and rows data table
thin-walled structures in which gases are exchanged between the lungs and the blood alveoli
a solution with a pH less than 7 acid
to conserve resources by using less reduce
a tool used to predict the possible genes and traits of offspring, based on the genes of their parents Punnett square
the organ system that receives stimuli from the environment, interprets the stimuli, and initiates a response nervous system
a combination of two or more pure substances mixture
tending to break or shatter easily brittle
the connective tissue that the circulatory system uses to transport materials through the body blood
tiny hair-like structures that paramecia use for movement cilia
body tissue that connects all parts of the body and provides support connective tissue
an area where water has filled all the available spaces in the soil and rock zone of saturation
a tube that transports urine from a kidney to the bladder ureter
a single-celled organism with a cell wall, classified in kingdom Monera bacterium
a characteristic of a substance that can be observed and measured without changing the substance physical property
a secondary organ of the digestive system that produces digestive juices pancreas
an organism classified in the kingdom Protista; most are single-celled and live in moist environments protist
a muscular organ that carries out both mechanical and chemical digestion stomach
a group of specialized cells that work together to perform a specific function tissue
the process of physically breaking food down into smaller pieces mechanical digestion
a horizontal row of elements in the periodic table period
a round or spherical bacterium coccus
the number of deaths in a population during a certain period of time death rate
a number, written below and to the right of an element, that shows how many atoms of each element are in a molecule subscript
all the layers of soil in an area soil profile
an organism that makes its own food producer
the temperature at which a solid changes to a liquid melting point
a cross that shows the inheritance of only one trait monohybrid cross
body tissue that carries impulses back and forth between the brain and the body nerve tissue
a fire in a wild area, such as a forest or prairie wildfire
a tool that uses two or more lenses to magnify small objects compound microscope
a tool that uses two or more lenses to magnify small objects cardiac muscle
a consumer that eats both plants and animals omnivore
an infection of the respiratory system that is caused by a virus; also called flu influenza
the process by which cells break down sugar to releases energy cellular respiration
the passing of traits from one generation to another heredity
an experiment in which only one factor or variable is tested at a time controlled scientific investigation
information collected through scientific research data
a pure substance that cannot be changed into a simpler substance element
a group of ecosystems that have similar climates and organisms biome
a secondary organ of the digestive system that stores bile made by the liver gallbladder
an organism classified in the kingdom Fungi fungus
a community of living things and their nonliving environment ecosystem
allowing water to pass through permeable
a cell structure that carries out a life function organelle
the smallest part of an element that has the chemical properties of that element atom
a factor in an investigation that responds to changes in the independent variable dependent variable
a rigid structure that surrounds the cell membrane of plant cells cell wall
a working model of a tool or product that is being developed prototype
a genetically determined characteristic that distinguishes one organism from another inherited trait
different forms of the same gene alleles
a large molecule that determines what traits are passed from one generation to the next DNA
a substance that can be used to determine if a solution is acidic, basic, or neutral indicator
the place where an organism lives, which supplies what it needs to survive habitat
conserving resources by using a product more than once reuse
a consumer that gets all or almost all of its food from plants herbivore
an organ that filters the blood to remove wastes and excess water kidney
the vertical axis on a graph y-axis
any characteristic of an organism, such as body shape or what it eats trait
Created by: belden