1. Biology Concepts with Imbedded IPC TEKS PowerPoint # 3 This series of slides includes both the biology TEKS *and* the IPC TEKS that were low performing on the various benchmarks.

2. Bio and IPC 1A: The student is expected to demonstrate safe practices in field and lab investigations. Which of these symbols indicates an environmental toxin? A. B. C. D. The correct answer is D. Answer A is explosive; B is compressed gas; C is electrical hazard. Click on screen for answer.

3. Bio & IPC 2B: The student is expected to collect data and make measurements with precision. Students used a balance to measure a sample of soil. What is the mass of the soil? A.206 g B.216 g C.263 g D.320 g The solution is to subtract the mass of the empty container from the mass of the container with the soil. 263 g – 57g = 206 g. The answer is A. On the 2 nd 6 weeks common assessment over ¼ of the students chose C.

4. Bio and IPC 2D: The student is expected to communicate valid conclusions. On a fishing trip, you discover a lake where every frog you find has an extra pair of legs. Based on this observation, which is the most valid conclusion? A. The frogs must be able to jump really well. B. These aren’t frogs but a new unknown species of amphibian. C. There must be pollution in the lake causing the frogs to change. D. There is not enough data to make a conclusion. The correct answer is D. This observation is startling but more observation and experimentation is necessary to determine exactly what has happened to the frogs in this lake.

5. Bio 4B: The student is expected to investigate and identify cellular processes including homeostasis, permeability, energy production, transportation of molecules, disposal of wastes, function of cellular parts, and synthesis of new molecules. The molecules in the liquid are moving due to what process? A. Diffusion B. Semipermeable membrane C. Hypertonic solution D. Osmosis The correct answer is A, diffusion. Without labels to tell us what the liquid is in the container, we cannot assume it is water. Therefore, osmosis is a poorer choice than diffusion.

6. IPC 4B The student is expected to investigate and describe applications of Newton’s Laws. The ciliate in the picture has a mass of 2 X 10 -5 kg (.00002 g). If it is accelerating 0 to 12 mm per minute (60 seconds), what force is it applying? (Hint: Force = mass X acceleration or F = mXa) A. 2.4 x10 -4 N B. 3.0 N C..12 N D. 6.6 X 10 -11 N The correct answer is D..00002 kg X.012 m/60s 2 = 6.6 x 10 -11 N For this problem you must convert 12 mm to meters and 60 must be squared because acceleration is expressed in meters per second squared. This is a hard question but you will get things like this in TAKS. This is an example of Newton’s 2 nd law of motion.

7. IPC 5A The student is expected to demonstrate wave types and their characteristics. The motion of the flag demonstrates what wave type? A. Transverse B. Compression C. Longitudinal D. Surface This wave travels down the length of the fabric of the cloth. The fabric is displaced perpendicular to the direction of the wave. Therefore, the correct answer is C.

8. Bio 5A: The student is expected to compare cells from different parts of plants and animals, including roots, stems, leaves, epithelia, muscles, and bones to show specialization of structure and function. Which cell below is an animal cell? Which cell below is an animal cell? A. B. The animal cell is A. It has no cell wall such as you can see surrounding cell B.

9. A. Bio 5B: The student is expected to identify cell differentiation in the development of organisms The structures labeled “A” are found in which organism? A. Raccoon B. Corn C. Strep bacteria D. Mushroom The correct answer is B. This is a picture of a plant cell. It has a cell wall, a large vacuole and two chloroplasts are labeled.

10. IPC 5 B: The Student is expected to: demonstrate wave interactions including interference, polarization, reflection, refraction and resonance. Polarized lenses, like the one in the picture, are famous for reducing road glare. How do they do this? A. The light is scattered by the lens. B. The light is twisted by the lens. C. The light is blocked by the lens. D. The light is aligned in one plane by the lens. The correct answer is D. Polarized light travels in a single plane.

11. IPC 6B: The student is expected to: investigate and demonstrate the movement of heat through solids, liquids, and gasses by convection, conduction and radiation. If you placed a beaker of water on the pictured hot plate, by what process would the water become warm? Radiation from the heating surface. Radiation from the heating surface. Conduction through the bottom of the beaker. Conduction through the bottom of the beaker. Convection from stirring the beaker as it heats. Convection from stirring the beaker as it heats. The correct answer is B. The heat from the hot plate is conducted through the bottom of the beaker and heats the water.

12. Bio 6D: The student is expected to compare genetic variations observed in plants and animals. Using the above parents, what percent of their offspring will have striped fur and blue eyes? A. 0 % B. 25% C. 50% D. 100% The female parent has two dominant genes for eye color. Therefore all offspring will have green eyes. The question is asking what percent will show both recessive traits. The correct answer is A.

13. Bio 6E: The student is expected to compare the processes of mitosis and meiosis and their significance to sexual and asexual reproduction. Look at the picture. What phase of the cell cycle is this cell showing? A. Prophase B. Anaphase C. Interphase D. Metaphase The cell nucleus is intact. The nucleolus is visible. No chromosomes can be seen. The correct answer is C, interphase.

14. IPC 6F: The student is expected to: investigate and compare series and parallel circuits. What type of circuit is shown in the picture? A. Series B. Series-parallel C. Parallel D. Series connection The circuit has the resistors next to each other in parallel rows. The correct answer is C.

15. IPC 7E: The student is expected to: classify samples of matter from everyday life as being elements, compounds or mixtures Classify the substance in the picture. A. Element B. Compound C. Mixture You can see 4 different types of atoms being held by bonds. This substance is a compound. The answer is B.

16. IPC 9A: The student is expected to: relate the structure of water to its function as the universal solvent. What part (s) of the water molecule are responsible for its ability to dissolve so many different materials? The hydrogen bonds The hydrogen bonds The van der waals forces The van der waals forces The + and – ends The + and – ends The hydrogen and oxygen atoms The hydrogen and oxygen atoms Notice in the picture that the + ends are attracted to the – chloride and the – ends are attracted to the + sodium. The correct answer is C.

17. Bio 9A: compare the structures and functions of different types of biomolecules such as carbohydrates, lipids, proteins, and nucleic acids Identify the biomolecule in the picture. A. Carbohydrate B. Lipid C. Protein D. Nucleic acid The correct answer is B. Lipids always have 3 fatty acids attached to a glycerol molecule.

18. IPC 9B: The student is expected to: relate the concentration of ions in a solution to physical and chemical properties such as pH, electrolytic behavior and reactivity. What needs to be added to the beaker to make sure the electric will flow? A. Nothing B. Salt C. Sugar D. Ice In order to cause the electricity to flow, the ion concentration needs to be increased. Salt will dissolve in the water into Cl- and Na+. The correct answer is B.