Term
| What are the questions that are answerable by scientific investigations based on? |
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Definition
1. observation/info gained through previous research
2. deals with things that are definable, measurable, and controllable |
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Term
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Definition
| A proposed explanation by scientists in an attempt to answer questions. |
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Term
| A hypothesis is usable only if it can be shown to be ____________ (is ____________. |
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Definition
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Term
| Can a hypothesis be proven true? We can only support the hypothesis with...? |
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Definition
| No; evidence from our investigation |
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Term
| What is the dependent variable? What axis does it go on on a graph? |
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Definition
| What the investigator measures (counts/records); y-axis |
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Term
| What is the independent variable? What axis does it go on on a graph? |
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Definition
| What the investigator varies during the experiment; x-axis |
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Term
| How many independent variables can an ivestigator choose to investigate? |
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Definition
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Term
| What are controlled variables? |
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Definition
| The variables held constant |
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Term
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Definition
| a treatment in which the independent variable is either eliminated or set at a standard value |
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Term
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Definition
| increases H+ concentration or donates a H+ to a solution; solution that has a pH less than 7 |
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Term
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Definition
| absorbs H+ or increases OH- concentration ina solution; substance that decreases H+ or accepts H+ in a solution; pH greater than 7 |
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Term
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Definition
| logarithmic scale based on H+ in a solution |
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Term
| What does the pH scale range from? |
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Definition
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Term
| What is the equation for the most basic solution? |
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Definition
| [H+] x [OH-] = 10^-14 moles (14= most basic) |
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Term
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Definition
| nuetralizes pH; minimizes the changes in pH |
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Term
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Definition
| molecules composed of C,H,O,N,P,S that make up living things; Carbs, lipids, DNA/RNA, Proteins |
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Term
| _______ _______ make up macromolecules. |
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Definition
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Term
| What is the basic unit of carbohydrates? (Give some examples) |
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Definition
| monosaccharides (glucose, fructose, galatose) |
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Term
| What do 2 monosaccharides form? (Give examples) |
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Definition
| Disacchrides (sucrose, lactose) |
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Term
| What do 3+ monosaccharides form? (Give examples) |
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Definition
| polysaccharides (starch, cellulose, alpha amylose, amylopectin) |
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Term
| What test is used to determine if there is starch in a substance? |
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Definition
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Term
| What test is used to determine if there is sugar in a solution? What does it test for specifically? |
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Definition
| Benedict's Test; reducing sugars |
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Term
| Lipid hate water so they are....? |
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Definition
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Term
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Definition
| glycerol backbone and a fatty acid tail (hydrocarbon tail) |
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Term
| Where do saturated fats originate from? |
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Definition
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Term
| Where do unsaturated fats originate from? |
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Definition
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Term
| What are phospholipids? What do they make up? |
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Definition
| 2 fatty acid tails and a polar group with a phosphate; cell membranes |
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Term
| What are some examples of sterol? |
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Definition
| Cholesterol, testosterone, estrogens |
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Term
| What test is done to determine if there are lipids in a substance? |
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Definition
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Term
| What are the basic units of proteins and how many are there? |
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Definition
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Term
| How are unique proteins formed? |
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Definition
| Essential and non-essential amino acids combine to create unique proteins |
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Term
| How many structures do proteins have? |
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Definition
| 4 (primary, secondart, teritary, quaternary) |
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Term
| What test is done to determine if there is protein present in a substance? |
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Definition
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Term
| ___________ and __________ are not macromoluecules but they are important for life and found in many foods. |
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Definition
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Term
| What test is done to determine if Vitamin C is present in a substance? |
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Definition
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Term
| What test is done to determine in Chloride ions are present in a substance? |
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Definition
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Term
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Definition
| A process that separates substances based on size. |
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