Biology/Science AIMS Review Packet Part 1 Semester 1 Quarter 1 Scientific Processes—Things to know when studying science. Use the data table below to answer the following questions: Effect of Different Physical Activities on Heart Rate Type of Activity Standing Running Weight Lifting Walking Yoga Heart Rate (beats per minute) Trial Trial Trial 1 2 3 Average 68 72 70 70 162 168 174 168 140 158 151 149 110 115 108 111 102 94 98 98 *http://www.brighthub.com/education/homework-tips/articles/86665.aspx 1. Explain two ways you know what the independent variable is in this experiment. (Type of Activity) – What you are changing, the variable which you the experimentor is manipulating. a. b. 2. Explain two ways you know what the dependent variable is in this experiment. (Heart Rate measured in beats per minute.) – What you are measuring, the variable which you the experimentor is measuring to determine any change. a. b. 3. What is the control in this experiment? __standing___ Explain how you know: _this is the experiment where no change has occurred. This is serving as the baseline for comparison to the trials where you the experimento has changed something. 4. Why would this scientist want to include 3 trials and take an average heart rate? __to ensure accuracy, help minimize error, 5. 6. If you were to graph this data, what kind of graph would be the best to use? ___bar graph. Explain your answer: __1 qualitative (quality: color, something objective) variable, 1 quantative (numerical, data driven) variable. 7. What kind of relationship should the graph show based on the data found in the table? __As the type of activity increases in intensity with the test subject, the heart rate increases. ____________ 8. Draw a line representing that relationship on the skeleton graph to the right. 9. Label each axis of the skeleton graph with the correct position of the IV and the DV. Heart Rate vs. Type of Activity Heart Rate vs. Type of Activity Heart Rate (bpm) 10. Write in a good title for a graph containing the data in the table above. 11. Where is the best place for a scientist/researcher to report their findings so the scientific community will be informed and begin to test/critique the research for accuracy, comparison, and modification? Type of Activity Publish in scientific journal so other scientists can repeat the experiment and yield the same result. Use the scenario and the data table below to answer the following questions: Dr. Stanley is a Zoologist studying elephants and their habits. He decided to find out how many elephants visited a particular watering hole each day, so he counted the elephants every day for a week. He then found the mean, median, and mode for his data to help him communicate his findings. Sunday 16 Monday 14 Number of Elephants per Day Tuesday Wednesday Thursday 16 16 19 Friday 52 Saturday 16 *Buckle Down Arizona AIMS HS Science 2nd Edition 2007 12. Define each of the following in one word or phrase and do the math to calculate each. Show your work. a. mean--__ add all of the numbers in the set and divide by how many numbers are in the list answer: 21.285 b. median--_the list of numbers should be arranged in order from lowest to highest. The number in the middle or the average of the two middle numbers is the median answer: 16 c. mode-- Mode refers to the number in a list that occurs most often answer: 16 13. Which of the above forms of mathematical models would best show an accurate representation of Dr. Stanley’s data? ____________________ Explain the reason(s) for your choice: __________________ ____________________________________________________________________________________ Chapter 1—General Biology information 13. Name and describe the 7(8) characteristics of living things. Characteristic 1 2 3 4 Cells 5 6 7 Define/Describe Reproduce All living things are composed of one (unicellular) or more (multicellular cells. Cells are the smallest unit of living things. All living things have the ability to reproduce to produce offspring. Move All living things respond to their environment Acquire & Use Energy To cary out life’s functions such as cellular respiration or photosynthesis. Energy is captured from sunlight by plants and algae. The transfer of energy from one form to another is an example of metabolism. All organisms require energy to grow, usually in the form of ATP. Homeostasis All living things must maintain a stable internal balance. Organisms act to keep their interior conditions relatively constant. All living things grow and replenish themselves. Cells individually reproduce, humans as a group can reproduce. All living things change over time. Evolution is a genetic change in a population over time. Grow & Develop Evolve Genetics 8 All living things contain genentic material based on the replication and duplication of genetic material. This genetic information is massed on to future generations in a process called heredity. Chapter 2—Chemistry of Life Use the following word bank to fill in the missing words or phrases in the paragraph about water below. acid polar adhesion base surface tension capillary action hydrogen (X3) 1-6 cohesion 8-14 hydroxide oxygen 14. Water—Water molecules are composed of 2 atoms of hydrogen and one atom of oxygen. The position of these atoms causes a water molecule to be slightly charged or what is called polar. The bond formed by the slight attraction of water molecules to one another is called a hydrogen bond. It is a relatively weak bond, but strong enough to allow water to form an attraction with itself which allows for surface tension. This attraction is called cohesion. This is how water drops are formed. Another form of attraction between water and other polar substances is called adhesion. This is what allows water to move up the stem of a plant, also called capillary action. If water molecules within a given substance break their individual bonds, the resulting particles are called ions; H+ is a hydrogen ion and OH- is a hydroxide ion. Substances with larger numbers of H+ in solution are called acid their pH is between 1-6. Substance with reduced numbers of H+ in solution are called bases their pH is between 8-14. 15. Macromolecule (polymer) Organic Compounds—Molecules of Life – HBIO – pg. 55 Building Block (monomer) [small parts that make a whole] Monosaccharide (glucose) Molecular Structure of the Building Block [draw correct molecule here] Elements it is composed of Importance to Living Things Simple: Energy, Photosynth esis, Cellular Respiration Glucose, monosaccharides Carbohydrate Cell Part or Process they are involved in energy C,H,O 1:2:1 C:H:O Simple Sugars Complex: Starch = polymer of simple sugars connected together Saturated: Fatty Acid Fatty acids, single bonds C,N,O,P Lipids (fats) Steroids, long term energy storage, Cell protection, oils, Unsaturated: Double bonds [specialized-phospholipid bilayer] Diffusion/o smosis Phospholipid bilayer regulates what enters/exits the cell Enzymes, cartilage, bones, tendons, collagen, keratin, chemical messengers throughout the brain Phosphate head (hydrophilic), Lipid Tail (hydrophobic) Amino acids Primary (1°), Secondary (2°), Tertiary (3°), Quaternary (4°) structures C,H, O, N Proteins, Enzymes, Polypeptid es Long polymers = nucleic acids Nitrogenou s base, sugar (deoxyribos e DNA) (ribose RNA), phosphate group DNA Replication Stores genetic information Draw picture here 3 phosphate groups + Adenine (nitrogen base) Cellular respiration energy Proteins DNA Nucleotides Energy Molecule: ATP P-P-P-Adenine Adenosine TriPhosphate Chapter 3—Cells Fill in the missing information in the diagrams and tables below. 16. Prokaryotic 17. vs. Eukaryotic Cell Organelles Name Function Plant Animal Both Process Involved In cell membrane Regulates what enters & exits cell:Protection & support Both cell wall Maintain shape of cell: protection & support Plant Diffusion/osmosis: Diffusion/osmosis/protection: support cytoplasm jelly-like substance that fills the cell, it is 80% water Storage – non membrane bound compartment which stores ions, sugars, pigments Small complex assemblies of protein and RNA often bound to ER Both Plant & Protista Store organelles Increase surface to volume ratio of plant cell Both Both Site of protein synthesis Forms vesicles which to transport proteins in or out of cell. Participates in protein and lipid synthesis Aid in manufacture of carbohydrates and lipids Plant Storage, increase surafce area Plant Trap light energy particles for photosynthesis Both Cellular respiration Both All cell activities Both rRNA units assemble Regulates what enters & exits nucleus vacuole ribosome golgi apparatus rough ER smooth ER central vacuole chloroplast mitochondria nucleus nucleolus nuclear membrane distribution and shipping department for the cell's chemical products Ribosomes attached on outside, aids in protein synthesis No ribosomes, does not work in protein synthesis, used in metabolism and synthesis of fats Single vacuole in the center of a plant – storage for primarily water, keeps plant cells expand outward increasing surface area Double membrane organelle with stacks of thylakoid vesicles. Used in photosynthesis to trap the light energy particles Double membrane organelle responsible for cellular respiration Command center and control of the cell directing all activities non-membrane bound structure composed of proteins and nucleic acids found within the nucleus lysosome Double membrane protecting DNA the main microtubule organizing center of the animal cell as well as a regulator of cell-cycle progression Recycling center: garbage disposal: digesting wornout cell components & cell death “apoptosis” microtubules Protein fibers within the cytoskeleton centrosome Both Both Both Animal Both Both Mitosis Cell death “apoptosis” Help the cell to move, maintain structure of the cell nuclear pores holes in nuclear membrane, regulate passage between nucleus & cytoplasm, some pass not others cylindrical structures that are composed of groupings of microtubules centrioles Chapter 4—Cell Transport 18. Allow RNA to pass into and out of nucleus Moves chromosomes where they need to be Both A Is a large cell or a small cell more efficient? small Explain your answer in terms of surface area to volume ratio: less time for molecules/messages to pass into/out of cell. Fill in the following flow chart with the information asked for in each box. 19. Types of Cell Transport Active Transport Passive No energy needed Diffusion – molecules move from a region of high concentration to low concentration types Definition Facilitated Diffusion – requires protein carriers – movement of glucose into cells Osmosis – diffusion of water across membrane – high low Definition Na+, K+ Pump – Na+ & K+ transported against their gradient. types Coupled transport – glucose is moved into cells against concentration gradient. energy is needed Proton Pump – protons pumped against concentration gradient. ATP formed. 20. Define the solution types in the table below and draw in the shape/appearance of the cells in that solution. Hypertonic Moves out – cell will shrivel Definition Draw Shape in Beaker Isotonic Equal Hypotonic Moves in – cell will swell 21. List in order from smallest to largest the levels of organization of living things. (use the extended version) smallest--species__ Genus______________________ Family_________________ Order____________ Class_______ Write the word “species” next to the Phylum__ level of organization that would Kindom______________ represent an individual species. Domain__________________ Define the term, species here: _descriptive term used to describe a specific species of living organism. 22. Define the 5 ways in which cells can reproduce and give an example of an organism that uses each type of reproduction. 1. binary fission- prokaryotes reproduce – after the circular DNA is copied, the cell will swell and the newly replicated DNA will move toward each end of the cell. Cell splits in two using the plasma membrane Example: see pg. 142 HBIO 2. sexual reproduction- meiosis – involves sperm & egg cells (gametes) M Phase – Meiosis I & II 1. P – Prophase I & II 2. M – Metaphase I & II 3. A – Anaphase I & II 4. T – Telophase I & II C Phase - Cytokinesis Example: pg. 158 in textbook 3. asexual reproduction- mitosis- cell duplication Interphase 1. G1 – cell grows 2. S – synthesis phase – DNA is copied 3. G2 – organelles are copied M Phase – Mitosis 5. P – Prophase 6. M – Metaphase 7. A – Anaphase 8. T – Telophase C Phase - Cytokinesis Example – pg. 147 in textbook 23. Are viruses living? List evidence for and against and state your final determination based on the evidence you presented here. Viruses are alive. Viruses are not alive. Final Determination