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Biology 9-CVS 2
Midterm 2
| Question | Answer |
|---|---|
| Describe what would happen to the tundra biome if there was an increase in temperature? | The roots would grow maybe not a s mych peremafrost not as cold weather |
| What are the characteristics of life? | #1 Living things all have a cell #2 All living things have an organization #3 Use energy #4 Respond to stimulis #5 Living things grow #6 Reproduce #7 Adapt to enivroment |
| What is carrying capacity? | Maximum number of individuals in a species that an enviroment can support long term. |
| What is the formula for population growth? | ( N + I ) - (M + E) |
| What is natality | Birth / New life |
| What is mortality | Death |
| What is Emigration | People moving away from population |
| What is Immigration | People moving INTO population |
| What is ecological succession? | The change in an ecosystem that ahppens when one communtiy repalces another as a result of changing abiotic and biotic factors. |
| What is the difference between an element and a compund? | Element-Pure substance that only contains one type of atom. Compound-is a pure substance formed when 2 or more different elements combine. |
| What is a electron? | Negatively charged particles |
| What are protons? | Positvely charged particles. |
| What are neutrons? | Neutral charged. (No charge) |
| What is a netural atom? | Has no charge |
| What is a covalent compound? | When 2 non-metals chemically bond they share electrons |
| What is a ionic compound? | When a active metal & non-metal bond. |
| What is a polar molecule? | A molecule that have unequal distribution of charges.They have oppositely charged regions. |
| Leading contributor to extinction rates of terrestrail and fresh water organisms? | factory & oil spills cause oil get into water toxication and kill them |
| What appears last in the ecological succession? | Biodiversity (Check to see if right) |
| What is the #1 factor that determines variation in climate? | Human impact (check to see if right) |
| Give example of renewable resource. | ?? |
| Give example of non-renewable resource. | ?? |
| What ecosystem has the most biodiversity, best place for finding cures for diseases? | Tropical rainforest (Check to see if right) |
| What si the total number of atoms in glucose (C6 H 12 O 6) | 24 (Check to see if right) |
| How many electrons can the 1st energy level hold? The second? | 2 / 4-8 (Check to see if right) |
| Which atoms form ions most easily? | ?? |
| What is the simplest form of carbohydrate? | Glucose & fructosces (Check to see if right) |
| What are proteins made of? | Amino acids, Carbon, nitrogen, oxygen, hydrogen |
| Describe the pH scale. | Used to indicate the relative strength of acids & bases. Amount of hydrogen ions (H+) in a solution. |
| What is a solution? | The process of forming a mixture. 2 components (Solvente-water & Solute-kool aid) Homogeneous |
| What do enzymes do to chemical reactions? | They speed up the rate of chemical reations in biological processes. |
| What is an ion (Ionic bond)? | An atom or group of atoms that have activated a not electric charge |
| What is the difference between products & reactants? | Products- the substance formed during the reaction. Reactants- the starting substances (Reactants-Products) |
| Where is water located in the phospholipid bilayer? Where is water not located? | Polar head-likes water / Non polar tail-hates water |
| What is the purpose of cholestrol in the phospholipid bilayer? | Prevents fatty acid tails from sticking together. |
| What cell organelle converts sugars into energy? | Mitochondria |
| What cell organelle packages proteins? | Endoplasmic recticulum / Golgi apparatus (Check) |
| What is osmosis? | Diffusion of fluid through a selectively permeable membrane. |
| Which organelle transfers energy from the sun to usable energy? | Chloroplast |
| Which structure synthesizes protein? | Ribosomes |
| What does selectively permeable mean? | A Passage that allows only certain substances pass through, like a fish net. |
| What are the 3 parts of the cell theory? | #1 All living things are composed of cells. #2- Cells are the samllest working units in living things. #3- All cells come from preexisting cells. |
| Difference between Passive Transport & Active Transport. | Movement of particles across the cell membrane. Passive-NO Energy / Active-WITH Energy |
| What do cilia do in cells that do not move? | Short, numerous projections that look like hairs |
| What do Flagella do in cells that do not move? | Long create movement with a whiplike motion (Sperm) |
| What is used for energy in the cell? | Chemical energy in the form of AtP (Check) |
Created by:
garrettamey
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