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49 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is the Scientific Method? |
A method used by Biologists and other scientists to gather information and answer questions. |
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What are the 6 steps of the Scientific Method? |
Purpose Hypothesis Experimental design Data collection Data evaluation Conclusion |
P H E D D C |
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How does the observation step relate to the scientific method? |
Gives you reason for your experiment. |
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What is the Control? |
Not applying independant variable to. |
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What is the independent variable? |
Thing changing |
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What is the dependant variable? |
Outcome |
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What are constants? |
Things the experimental and control variables receive in the same quantity. |
Usually multiple |
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What is quantitative data? |
Numbers |
Quantity |
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What is qualitative data? |
Observations |
Quality |
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What are you trying to determine with the data analysis? |
Determine if hypothesis is correct. See outcomes and state conclusions. |
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What are the two types of graphs? |
Line : data over time Bar : regular group of data |
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If you were a scientist what would you do with the results from your experiment? |
Share with others and let them test it too. |
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What is the difference between a fact and an inference? |
Fact: can be proven Inference: observation or guess |
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What is an atom? |
The building blocks of matter |
Legos of real life |
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Describe the structure of an atom |
Protons, neutrons, nucleus, (surrounded by an electron cloud) |
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What is an element? |
Pure substance that cannot be broken down |
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Where can you find information about all known elements |
PERIODIC TABLE |
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What are the three most common elements in the human body? What percentage of the body consists of these elements? |
Carbon, hydrogen, oxygen, 90% |
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What is a trace element. Give 3 examples |
Substance that occurs in very small amounts. Chloride. Sodium. Iron |
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How does an element relate to a compound? |
Compounds are formed from elements |
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Water is to hydrogen and oxygen as a glucose is to... |
Carbon, hydrogen, oxygen |
3 |
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A water molecule is polar. What does this mean? |
It has unequal charges and can bond to other molecules. |
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What is an example of a non - polar molecule? |
Oil |
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What happens when an polar and non - polar molecule mix? |
The won't combine |
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What are the two components of a homogenous mixture? Which one is the "dissolver"? |
Solvent and solute. Solvent is the dissolver |
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When two substabce are mixed how would you tell If a chemical reaction has occurred? |
Production of heat light sound or smell |
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What are the two sides of a chemical equation? |
Reactants- goes in Products - come out |
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What is an enzyme? What does it do in a reaction? What does it not do? |
An enzyme is a biological catalyst. It speeds up a reaction. It does not increase the amount. |
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What is a Bimax? |
A certain temperature that an enzyme works best at. |
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What is the name ogf the reactants that bind to an enzyme. What location do they bind to? |
Substrate. Binds to an active sight |
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Name 4 functions that enzymes serve in the human body. |
Digestion Energy Movement Communication |
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What describes the tendancy of water molecules to be attracted to one another? |
Cohesion |
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Which property accounts for meniscus? Why? |
Adhesion because adhesion is water to other molecules |
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Which property of water accounts for coastal areas having more moderate temperatures than inland areas? Why? |
High heat capacity. Distributed quickly with more |
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What is organic chemistry? |
Study of carbon containing molecules |
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What are the four types of biological macromolecules |
Carbohydrates Lipids Proteins Nucleic acid |
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What are some examples of the various shapes observed in carbon molecules? |
Straight chains Rings Branch chain |
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What is the relationship between a macromolecular and building block |
Macromolecules are made of building blocks |
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Which elements are carbohydrates composed of? |
Carbon Hydrogen Oxygen |
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What are the functions of carbohydrates? |
Quick energy source for animals. And structural support in plants |
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What are the 3 main classes of lipids? Structure? |
Triglyceride- glycerol backbone with 3 fatty acid tails Phospholypid- glycerol backbone and 2 fatty acid tails Steroids- a ring structure |
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What is the difference between saturated and unsaturated fat? Which ones healthier? |
Saturated-cant bond to fatty acid tails Unsaturated- tails have one hydrogen Healthier- unsaturated |
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What are the main functions of lipids? |
Long-term energy storage. Thermal regulations. Functioning of membranes. Used in food. |
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How many different amino acids are there? |
20 |
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How can there be 10,000 different proteins and only 20 amino acids? |
They combine in different ways to create different proteins |
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What are the two 3D shapes proteins can assume |
Helix Pleated sheet |
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Where do proteins exist in your body? |
Muscles. Skin. Hair. |
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What is the composition of a nucleic acid? |
Carbon. Hydrogen. oxygen. Nitrogen. Phosphorus |
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What are the building blocks of nucleic acid? What are the sub-units of these building blocks? |
Nucleotides. Made of phosphate groups. Ribose |
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