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BeldenPASS
PASS Review Questions For 7th Grade Science
| Question | Answer |
|---|---|
| All of the individuals of a given species in a specific area or region at a certain time. | Populations |
| All the different populations in a specific area or region at a certain time. | Communities |
| One or more communities in an area and the abiotic factors | Ecosystems |
| Individual ecosystems grouped together according to the climate and the predominant vegetation and characterized by adaptations of organisms to that particular environment | Biomes |
| The place where an organism lives in order to obtain its food, water, shelter and other things needed for survival | habitat |
| The particular role of an organism in its environment including type of food it eats, how it obtains its food and how it interacts with other organisms | niche |
| Use pictures or words and arrows to show the movement of energy through the trophic levels of organisms | Food chains |
| indicates the position that the organism occupies in the food chain—what it eats and what eats it | trophic level |
| Describe the organisms found in interconnecting food chains using pictures or words and arrows | Food webs |
| Show the amount of energy that moves from one trophic level to another in a food chain | Energy pyramids |
| a tool that is used to magnify the features of an object | microscope |
| contains the 10X magnifying lens | Eyepiece |
| focuses the image under low power | Coarse adjustment knob/focus |
| focuses the image under high power | Fine adjustment knob/focus |
| the lighted area when looking through a microscope | field of view |
| a prediction about the relationship between variables is formed from the testable question | hypothesis |
| gained by carefully identifying and describing properties using the five senses or scientific tools | scientific observation |
| are observations that use numbers (amounts) or measurements (including the unit label) or observations that make relative comparisons, such as more than, all, less than, few, or none | Quantitative observations |
| observations that are made using only the senses and refer to specific properties | Qualitative observations |
| an explanation or interpretation of an observation based on prior experiences or supported by observations made in the investigation | inference |
| Each set of repeated data | trial |
| a portion of the total number, as a type of estimation | sample |
| extremely small particles, too small to be seen with a classroom microscope, that matter is composed of | atoms |
| pure substances that cannot be changed into simpler substances | Elements |
| pure substances that are composed of two or more types of elements that are chemically combined | Compounds |
| not uniform throughout, the component substances can be visibly distinguished | heterogeneous mixture |
| uniform throughout, the substances are evenly mixed and cannot be visibly distinguished | homogeneous mixture |
| Having a shiny surface or reflecting light brightly | Luster |
| Heat and electricity move through them easily | Conductors |
| Ability to be hammered into different shapes | Malleable |
| Ability to be drawn into a wire | Ductile |
| Heavy for their size | High density |
| Not shiny | Dull |
| Heat and electricity do not move through them easily | Nonconductors |
| Break or shatter easily (solids) | Brittle |
| A horizontal row on the periodic table | period |
| also called groups, are vertical columns of elements on the periodic table; they are usually numbered 1-18 | Families |
| Rod-shaped bacteria | BACILLUS |
| Round-shaped bacteria | COCCUS |
| Spiral-shaped bacteria | SPIRAL |
| The thin, flexible outer covering of a cell. It controls what enters and leaves a cell. | CELL MEMBRANE |
| occurs as materials are moved from an area of higher concentration to an area of lower concentration | DIFFUSION |
| Contains the genetic material (DNA) and is the control center of the cell | NUCLEUS |
| Act as temporary storage centers. Some store water; others store waste products until they can be eliminated from the cell. | VACUOLE |
| All organisms, including plants and animals, break down simple sugars (C6H12O6) into carbon dioxide (CO2) and water (H2O) and release energy. | RESPIRATION |
| a process of cell division, which results in the production of two daughter cells from a single parent cell | MITOSIS |
| A structure found in the nucleus of a cell that contains the genetic information (DNA). | CHROMOSOMES |
| the passing of traits from one generation to another | HEREDITY |
| a genetically determined characteristic that distinguishes one organism from another organism | INHERITED TRAIT |
| the physical expression of the genes | PHENOTYPE |
| responsible for the inherited characteristics that distinguish one individual from another | GENES |
| Organisms rid the cells of waste products that could be harmful to the cell. | WASTE ELIMINATION |
| Plants use light energy (for example sunlight) to combine carbon dioxide (CO2) and water (H2O) to make simple sugars (C6H12O6). | PHOTOSYNTHESIS |
| Provides support and shape for plant cells. It is made mostly of cellulose. | CELL WALL |
| Are the energy producing sites in the cell where respiration takes place. It is sometimes called the “powerhouse” of the cell. | MITOCHONDRIA |
| Are the sites where photosynthesis takes place in a plant cell. They contain the chlorophyll used to make food. | CHLOROPLASTS |
| The gel-like fluid inside of a cell made of mostly water | CYTOPLASM |
| the diffusion of water across a membrane | OSMOSIS |
| Protist with Pseudopods | AMOEBA |
| Protist with Cilia | PARAMECIUM |
| Protist with Flagella | EUGLENA |
| causes blood to flow through the body by its pumping action | heart |
| occur where two or more bones meet | joints |
| attach bones at the joints | ligaments |
| provide shape and support for the body and protection for many organs and structures | bones |
| covers the body and prevents the loss of water | skin |
| connect the skeletal muscles to bones | tendons |
| involuntary muscle that forms the heart | cardiac muscle |
| involuntary muscles that control many types of movement within the body (such as digestion) | smooth muscle |
| voluntary muscles attached to bones and provide the force needed to move the bones | skeletal muscle |
| filter and get rid of urea, excess water, and some other waste materials released by the cells | kidneys |
| tubes which connect each kidney to the bladder | ureters |
| a saclike muscular organ which stores urine until it is released from the body | bladder |
| tube through which urine passes before it is removed from the body | urethra |
| a secondary organ to the digestive system that functions to produce digestive juices that help to further break down the food in the small intestine | pancreas |
| a secondary organ to the digestive system that functions to store bile produced by the liver | gallbladder |
| a secondary organ of the digestive system that produces bile, which is used by the body to break up fat particles | liver |
| a short tube that stores solid waste until it is eliminated from the body through the anus | rectum |
| the organ where water is absorbed from the food and taken into the bloodstream; prepares the remaining undigested food for elimination from the body | large intestine |
| the organ where most of the chemical digestion of food takes place; nutrients from food are also absorbed here | small intestine |
| continues the process of mechanical digestion; and secretes gastric juices that continue the process of chemical digestion started in the mouth | stomach |
| the transport tube that carries chewed food to the stomach | esophagus |
| begins to break down food into smaller pieces through mechanical digestion; saliva in the mouth starts the process of chemical digestion | mouth |
| carry blood that has oxygen and nutrients to all the parts of the body | arteries |
| carry waste products (for example carbon dioxide) from all the parts of the body back to the heart | veins |
| a highly contagious viral infection of the respiratory system | influenza |
| a common fungal infection of the skin of the feet | athlete’s foot |
| contagious disease caused by a bacterial infection | strep throat |
| diseases which cannot be spread from person to person | non-infectious diseases |
| a disease that results in the glucose (sugar) level of the blood being higher than the normal range | diabetes |
| a disease of the nervous system that occurs when certain nerve cells in the brain stop functioning properly | Parkinson’s disease |
| a disease in which skin cells found in the outer layers of the skin become damaged | skin cancer |
| a disease that affects the lungs and the airways that deliver air to the lungs | asthma |
| tiny organisms such as viruses, bacteria, and fungi | pathogens |
| the body system responsible for distinguishing between the different kinds of pathogens and reacting to each according to its type | immune system |
| a condition that does not allow the body to function normally | disease |
| has an illness caused by a viral infection located in the respiratory system | cold |
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