Biology Concepts with Imbedded IPC TEKS PowerPoint # 1 These IPC TEKS are the ones they did poorly on the Benchmark.

1A: The student is expected to demonstrate safe practices in field and lab investigations. Which of these symbols represents radiation? A. B. C. D. The correct answer is C. Answer A is biohazard; B is electrical; C is explosive.

2D: The student is expected to communicate valid conclusions. In looking at the data, you make a graph like the one shown. What can you conclude about the effect of CO on humans? A. There is no effect. B. As CO increases, hemoglobin increases so it helps us carry more oxygen. C. As hemoglobin increases, CO decreases so it doesn’t hurt us. D. As CO increases, hemoglobin carries an increasing amount of CO and as a result carries less oxygen. The correct answer is D. Hemoglobin can carry both oxygen and carbon monoxide but no more than 100% of its capacity for either one.

4B The student is expected to investigate and describe applications of Newton’s Laws. Which of the following is a description of Newton’s Third Law? A. It takes the ciliate the same amount of force as its own mass in order to start moving. B. In order to go faster, the ciliate has to swim harder. C. In order to slow down, the ciliate has to apply a negative force. D. When the ciliate moves forward, the water moves backward. The correct answer is D. Newton’s Third law is that for every action there is an opposite and equal reaction.

5A The student is expected to demonstrate wave types and their characteristics. In this picture, what type of wave is the sunlight? A. Mechanical B. Electromagnetic C. Matter The correct answer is B. Why is the correct answer B? Because sunlight travels through space which is empty.

5 (B) The Student is expected to: demonstrate wave interactions including interference, polarization, reflection, refraction and resonance. When light enters the eye, what happens when it strikes the lens? When light enters the eye, what happens when it strikes the lens? A. Light is reflected. B. Light is polarized C. Light is refracted. D. Light is resonated. The answer is C. Notice the light is bent when it goes thru the lens. Bending waves is to refract them.

6(B) The student is expected to: investigate and demonstrate the movement of heat through solids, liquids, and gasses by convection, conduction and radiation. This is a picture of a dog showing the heat its body is producing. Is it losing heat due to: A. Convection B. Radiation C. Conduction The correct answer is B. Heat radiates from the dog’s body and yours. You can feel the heat rising from your skin if you hold your hand above your skin.

6(F) The student is expected to: investigate and compare series and parallel circuits. If the brain dies, a human being is dead. Does this make the brain analogous to a circuit in series or a circuit in parallel? While the brain is capable of finding ways around an injury, brain death is more analogous to circuits in series than in parallel. Circuits in series will shut down if even one part of it is interrupted. Circuits in parallel will continue to function even when damaged.

7(E) The student is expected to: classify samples of matter from everyday life as being elements, compounds or mixtures Blood contains plasma, white blood cells, red blood cells and platelets. Is blood a: A. Element B. Compound C. Mixture The answer is C, mixture. You can separate the parts of the blood into the various cells and the liquid.

9(A) The student is expected to: relate the structure of water to its function as the universal solvent. Water is what type of molecule? Water is what type of molecule? A. Ionic B. Protein C. Polar D. Coherent The correct answer is C. Water is polar, meaning that it has two different ends to it, an oxygen end and a hydrogen end.

9(A) The student is expected to: relate the structure of water to its function as the universal solvent. Water has charges on both ends because it is polar. What do these charges do when they contact a substance? The charged ends are attracted to their opposites on the substance and pull the substance apart. We see this as the substance dissolving into the water, such as when sugar “melts” into your ice tea.

9(B) The student is expected to: relate the concentration of ions in a solution ot physical and chemical properties such as pH, electrolytic behavior and reactivity. When hydrogen ions are in large concentration the solution is: A. Acidic (below 7) B. Neutral (7) C. Basic (above 7) The correct answer is A. High concentration of H+ ions is more acidic and has numbers less than 7.