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Which variable is the cause in an experiment? |
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Which variable is the result in an experiment |
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Which variable goes on the x-axis? |
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Which variable goes on the y-axis? |
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What is the format for a properly stated hypothesis? |
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If (Independent Variable) then (Dependent Variable). |
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Why is it important to change only one variable in an experiment at a time? |
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This helps identify the variable that caused the result. If you change too many variables then you will not know which caused the result. |
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There are a couple pieces of information necessary to determine physical fitness. What are they? |
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Physical activity level and dietary input |
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What is recorded in a dietary analysis? |
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All the foods and nutrients you ingest during a specified time period. |
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What is mechanical breakdown of food? |
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This is the physical smashing of food such as when chewing in the mouth or grinding of food in the stomach. |
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Name the enzyme that helps to chemically digest starch. |
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What is starch broken down into when it is chemically digested? |
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Name the enzyme that helps to chemically break down protein. |
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What is protein broken down into when it is chemically digested? |
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What enzyme helps regulate blood sugar levels? |
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What is the smallest living component? |
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What surrounds the outside of a cell? |
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Plasma membrane (also called cell membrane) |
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Why are plasma membranes considered to be semi-permeable? |
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The membranes let in some but not all materials |
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What is the type of solution that has more dissolved particles and less water than a cell? |
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What is the type of solution that has less dissolved particles and more water than a cell |
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What is the type of solution that has the same concentration of dissolved particles and water as a cell |
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Tell what the cell would do in this situation: Concentration inside the cell is 10% salt and 90% water and the cell is 50% salt and 50% water |
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Definition
water will move out - cell will shrink |
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What is the term for returning back to normal? |
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Name some things that may happen if you are exercising. |
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sweat, dehydrate, heart rate increase, breathing rate increase, dilation of blood vessels which produces a flushed appearance to skin |
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Why does your body sweat? |
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It is to try to cool your body and bring it back to normal/homeostasis. |
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What two systems do we need to maintain homeostasis? |
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What will a cell do when it is placed in a hypertonic solution? |
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it will shrink - water will go out |
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what will happen when a cell is placed in a hypotonic solution? |
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It will swell - water will go in (might even burst/lyse) |
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What is the endocrine system? |
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It releases hormones to regulate the body |
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What is the nervous system? |
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It responds to stimuli to help maintain the body and respond to the environment. |
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What is it called when we are in a normal, healthy state? |
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What is the scientific term used to describe when a cell bursts open? |
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What is the term used to describe the liquid portion of a solution? |
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What is the term used to describe the solid part of a solution? |
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The division of a body cell to make two daughter cells. |
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The division of a cell to make sperm or egg cells (gametes). |
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What happens to the number of chromosomes at the end of meiosis? |
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it is only half of the original number |
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What cell division process makes egg or sperm cells? |
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What cell division process makes body cells? |
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These are structures found inside the nucleus of a cell that contain the DNA (genetic information) for a cell. |
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