Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science Exam Mid '13
Life Science Mid-Term
| Question | Answer |
|---|---|
| What is biology? | The study of life |
| What is the first step of the scientific method? | Ask a question |
| What is the second step of the scientific method? | Form a hypothesis |
| What is the third step of the scientific method? | Do an experiment |
| What is the fourth step of the scientific method? | Draw conclusions |
| What is the fifth step of the scientific method? | Communicate results |
| What is the control group? | The group that gets the normal condition |
| What is the experimental group? | The group that gets tested |
| What are variables? | Anything that may effect the outcome of the experiment |
| What is the independent variable? | The variable being tested |
| What is the dependent variable? | The possible result of testing the independent variable |
| What system of measurements is used in science? | The International System of Units (SI) |
| What is the unit for length in the SI system? | Meter(m) |
| What is the unit for mass an object occupies in the SI system? | Liter(L) |
| What is the unit for mass in the SI system? | Gram(g) |
| What is the difference between mass and weight? | Weight is the force of gravity on an object, mass is the amount of matter in an object |
| How do you find something's weight on the moon? | Multiply by 1/6 |
| What is the unit for time in the SI system? | Seconds |
| What is the unit for temperature in the SI system? | Kelvin(K) |
| Why grow microalgae? | It is a new fuel source that is not reliant on fossil fuels, decreases the amount of CO2 in the atmosphere, can make other products (foods and medicines) |
| What are the 9 characteristics of life? | 1. Cells 2. Responds to stimuli 3. Maintains homeostasis 4. Reproduce 5. Grow and develop 6. Need nutrients 7. Organization 8. Use energy 9. Have DNA |
| What are cells? | The smallest unit of life |
| What is homeostasis? | The ability to maintain a stable internal environment regardless of outside conditions |
| What is asexual reproduction? | Reproduction with one parent |
| What is sexual reproduction? | Reproduction with two parents |
| What nutrients do all living things need? | Water, Oxygen, Carbon Dioxide, and Food (Energy) |
| What are unicellular organisms? | Organisms with one cell |
| What are multicellular organisms? | Organisms with more than one cell |
| What is the function of DNA? | It is responsible for every trait of each living thing |
| How do you spell DNA? | DEOXYRIBONUCLEIC ACID |
| What is classification? | The arrangement of organisms into orderly groups based on their similarities |
| Why should we classify? | To keep things organized, to make life easier, to understand the similarities and differences among living things. |
| What is taxonomy? | The science of classification |
| Who was Aristotle? | Aristotle (384 BC- 322 BC) was a Greek scientist who classified living things based on the presence of red blood and the shape and size of the animal. |
| What were the three important things Carolus Linnaeus did? | 1. Classified organisms based on their specific traits 2. Placed organisms into two categories- Kingdom and Phylum 3. Used Latin to name living things |
| What are the three domains that animals are classified in today? | 1. Archaea 2. Bacteria 3. Eukarya |
| What are archaea? | Unicellular organisms only found in extreme conditions |
| What are bacteria? | Simple, unicellular organisms |
| What are eukarya? | More complex unicellular and multicellular organisms |
| What is the modern classification system? | Kingdom, Phylum, Class, Order, Family, Genus, Species |
| what are the two parts of a scientific name? | Genus name, species name |
| Why use Latin? | People all over the world can understand and communicate with each other |
| How do you find the level of magnification? | Eyepiece x the objective |
| Who looked at a piece of cork under a microscope and discovered cells in 1665? | Robert Hook |
| Who looked at pond water under his microscope in 1673? | Anton van Leeuwenhoek |
| Who determined that all plants are make of cells in 1839? | Matthias Schleider |
| Who concluded that all animals are composed of cells in 1839? | Theodor Shwann |
| Who concluded that cells can only develop from other cells in 1858? | Rudolf Virchow |
| What is the cell theory? | 1.All living things are composed of one or more cells 2.The cell is the basic unit of structure and function in every living thing 3. All cells come from other cells |
| What are the two cell types? | Prokaryotic and Eukaryotic |
| What is a prokaryotic cell? | No nucleus or other membrane-bound organelles |
| What is eukaryotic cell? | Have a nucleus and other organisms |
| What type of organisms are prokaryotic cells? | Bacteria |
| What is the main ingredient of cells? | Water |
| What are the four types of macromolecules? | Lipids, nucleic acids, carbohydrates, and proteins |
| What are carbohydrates? | compounds made up of sugars |
| What are the two types of carbohydrates? | simple and complex |
| What are simple carbohydrates? | They are carbohydrates made up of a few sugar molecules |
| What is the simplest sugar called? | Glucose |
| What are complex carbohydrates? | made up of a long chain of sugar molecules |
| What is starch? | Thousands of glucoses put together |
| What is a protein made up of? | Subunits called amino acids |
| What are the function of proteins? | 1. They Build living materials 2. Help speed up chemical reactions 3. Helps cells communicate with each other 4. Carry O2 throughout living things 5. Provides energy |
| What are lipids? | Fats and oils |
| What are the functions of lipids? | 1. Stored energy 2. Provides insulation 3. Cushions organs 4. Makes up cells |
| What are nucleic acids made up of? | Nucleotides |
| What are the two types of nucleic acids? | RNA and DNA |
| What is the function of nucleic acids? | Holds an organism's genetic info |
| What is the cell membrane? | It surrounds and protects the cell; gives the cell its shape; lets certain things into the cell and out of the cell. |
| What is the nucleus? | The control center of the cell; holds DNA |
| What is the nucleolus? | It is found inside the nucleus; produces ribosomes |
| What are ribosomes? | They make proteins, are found free floating in the cytoplasm |
| What is the endoplasmic reticulum (ER)? | The highway system of the cell |
| What are the two types of ER? | Smooth and Rough |
| What is smooth ER? | It has no ribosomes; makes lipids and helps remove harmful materials from the cell |
| What is rough ER? | Has ribosomes attached; makes proteins |
| What is the cytoplasm? | It is a clear, Jell-O like material in which all other organelles are found |
| What are mithochondria? | They are the powerhouses of the cell; where glucose is converted into energy |
| What is the golgi complex? | The UPS of the cell; packages, stores, and delivers materials thoughout the cell |
| What are vacuoles? | They are empty space used for storage |
| Why do plants have bigger vacuoles? | Plants have to hold all of its water and glucose inside cells |
| What are lysosomes? | the wrecking companies of your cell; contains enzymes that break down wastes and worn out cell parts |
| What are the four main differences between a plant and animal cell? | 1. Plants have chloroplasts that contain chlorphyll where photosynthesis takes place 2. Plants have cell walls that provide support and protection 3. Large vacuole that stores glucose and water 4. Animals have centrioles that help in cell reproduction |
| How do plants maintain homeostasis in the fall? | They let leaves fall so it can store glucose |
| What are the two types of transport across the cell membrane? | Active and passive transport |
| What is passive transport? | It is movement across the cell membrane that does not require energy |
| What is diffusion? | It is the movement of materials across the cell membrane from an area of higher concentration to an area of lower concentration |
| What is osmosis? | It is the movement of water molecules across the cell membrane from an area of higher concentration to an area of lower concentration |
| What is facilitated diffusion? | It is diffusion across the cell membrane with the help of membrane proteins |
| What are the two types of membrane proteins? | Channel proteins and carrier proteins |
| What is active transport? | It is the movement of materials across the cell membrane from an area of lower concentration to an area of higher concentration |
| What is endocytosis? | It is taking large particles into the cell |
| What is exocytosis? | It is expelling large particles out of the cell |
| What is cellular respiration? | It is the process in which glucose is converted into energy |
| What is glycosis? | It is the process in which glucose is broken down into smaller molecules |
| Where does glycosis take place? | The mitochondria |
| How is energy released from ATP? | By breaking the high energy bond |
| What is fermentation? | It is cellular respiration that does not require oxygen |
| What are the two types of fermentation? | Alcoholic and lactic acid fermentation |
Created by:
rdliddell
Popular Biology sets