Quarterly Assessment Review MP1

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# Quarterly Assessment Review MP1 - PowerPoint PPT Presentation

Quarterly Assessment Review MP1. Question 1 - 10. You should always be aware of and follow these in a lab. Answer 1 – 10. What are lab safety rules?. Question 1 - 20.

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## Quarterly Assessment Review MP1

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Presentation Transcript
Question 1 - 10
• You should always be aware of and follow these in a lab.
• What are lab safety rules?
Question 1 - 20
• A hypothesis is a proposed scientific explanation based on prior knowledge. A well tested explanation that unifies a broad range of observations is this.
• What is a theory?
Question 1 - 30
• Scientists are always observing a doing this. It is the first step of the scientific method.
Question 1 - 40
• This type of variable refers to what is observed or measured in an experiment. It changes in response to the manipulated variable.
• What is the responding variable?
Question 1 - 50
• In an experiment, this is the variable that you purposefully change. In our rabbit example, it would be the rabbit who was given the ice pack.
• What is the manipulated variable?
Question 2 - 10
• This is the common measurement system used by scientists. It is based on a scale that moves by multiples of 10.
• What is the metric system?
Question 2 - 20
• This is the metric unit of measurement for mass. We use a triple beam balance to measure these.
• What is a gram?
Question 2 - 30
• 71.0 kiloliters is equal to this many decaliters?
• What is 7,100 decaliters?
Question 2 - 40
• This unit of the metric system is used to measure the size of very small objects, such as the length of a cell. It is 1/1000 of a milimeter.
• What is a mircrometer (nm)?
Question 2 - 50
• These are the seven prefixes of the metric system. They are represented by KHDUDCM.
• What are kilo-, hecto-, deca-, base unit, deci-, centi-, mili-?
Question 3 - 10
• All atoms will have the same number of these two subatomic particles. Their positive and negative charges cancel each other out, making the atom neutral.
• What are protons and electrons?
Question 3 - 20
• These produces a higher number of H+ ions when in a solution. They range from 1-6 on the pH scale.
• What is an acid?
Question 3 - 30
• This is the attraction between a H atom and an electronegative atom, such as O. It is the bond that holds water molecules together.
• What are hydrogen bonds?
Question 3 - 40
• Weak acids and bases are found towards the middle of the pH scale, closest to this number. It is the pH of pure water.
Question 3 - 50
• Our bodies need to maintain a specific range of pH all over, except here, which is much more acidic.
• What is the stomach?
Question 4 - 10
• Enzymes speed up chemical reactions, making them biological ones of these.
• What are catalysts?
Question 4 - 20
• This macromolecule is made up of a glycerol molecule and three fatty acids chains. It helps make up part of the cell membrane.
• What are lipids?
Question 4 - 30
• These macromolecules give us our main source of energy, even if it is only for a short period of time.
• What are carbohydrates?
Question 4 - 40
• Enzyme function can be effected by drastic changes in these two internal conditions.
• What are temperature and pH?
Question 4 - 50
• An amino acid structure contains an amino group, a carboxyl group and this, which is different for each amino acid.
• What is the R-group sidechain?
Question 5 - 10
• These are the two inventors of the microscope. Without them, we would have never discovered the cell.
• Who are Robert Hooke and Anton van Leeuwenhoek?
Question 5 - 20
• This type of microscope uses a very fine probe to view the surface of a specimen. You can see live organisms with it.