Biology Do Now 3-18-19 Directions: Take out a sheet of notebook (Do Now sheet) and your bean lab from last Thursday to answer each question.   What is your lab’s independent variable? What is the dependent variable? What is your hypothesis?

Biology Do Now 3-18-19 Key What is your lab’s independent variable? Your independent variable is either dish detergent, salt or fertilizer. What is the dependent variable? Bean plant height What is your hypothesis? Answers will vary, BUT a sample hypothesis could be: “If bean plant height depends on dish detergent, then dish detergent will decrease the height of the bean plant because dish detergent will inhibit growth factors in the bean seeds.”

Biology Do Now 3-18-19 Graph the data and determine the trend it establishes. Amount of light (watts) 10 20 40 80 160 320 Rate of Photosynthesis (O2 bubbles/min) 2 4 8 16 32 64

I chose this graph to illustrate the relationship between the amount of light and the rate of photosynthesis (O2 bubbles produced/minute) TREND: According to the graph, as the amount of light (in watts) increases, the rate of the production of oxygen bubbles increase meaning the rate of photosynthesis increase.

Reminders i-Ready testing ends this Friday, March 22, 2019 3rd Quarter ends on April 3, 2019 (12 school days)

3rd Period Biology ONLY Take out your bean labs and set up your experiments. You will need: 2 cups of soil Bean seeds (you decide how many) One independent variable: dish detergent, salt or Miracle Gro fertilizer Enough water to make the soil damp but not soaking wet. Record how much water you added. LABEL YOUR CUPS so that you will know which cup is the experimental group and which is the control group

Objective Students will know how we process the food that we eat into usable energy by watching a video, completing a POGIL and reading a DEJ. Mastery level: 75% or better

Homework – Copy! Write a response to the prompt, “Do the laws of conservation of mass and energy apply to cellular respiration?”

Engage – Brainstorm with a partner Are the energy and matter needs of everyone the same? What factors could impact one’s energy and matter needs?

Explore – Illuminating Photosynthesis

Photosynthesis kahoot

Explore/Explain – Watch the Mitochondria video & answer the questions below. https://mpt.pbslearningmedia.org/resource/tdc02.sci.life.cell.mitochondria/the-powerhouse-of-the-cell/ What are the differences in the muscles of a sprinter and a marathon runner? How would you explain that skin cells have a lot fewer mitochondria than muscle cells? If you looked at heart cells, would you expect to see a lot of mitochondria or only a few?

Cell Energy (Photosynthesis and Respiration) Notes Energy for living things comes from food. Originally, the energy in food comes from the sun.

Laws of Conservation of Matter & Energy a fundamental principle of classical physics that matter and energy cannot be created or destroyed

Cellular Respiration: (2 kinds—Aerobic and Anaerobic) Cellular respiration is the process by which the energy of glucose is released in the cell to be used for life processes (movement, breathing, blood circulation, etc…)

Cells require a constant source of energy for life processes but keep only a small amount of ATP on hand. Cells can regenerate ATP as needed by using the energy stored in foods like glucose. The energy stored in glucose by photosynthesis is released by cellular respiration and repackaged into the energy of ATP.

Respiration occurs in ALL cells and can take place either with or without oxygen present.

Aerobic Respiration: requires oxygen Occurs in the mitochondria of the cell General formula for aerobic respiration: C6H12O6 + 6O2 6 CO2 + 6H2O + Energy (Reactants) (Product) glucose + oxygen carbon dioxide + water + energy

Anaerobic Respiration: occurs when no oxygen is available to the cell (2 kinds: Alcoholic and Lactic Acid) Also called fermentation which occurs when cells release energy from food without using oxygen. There are 2 types of fermentation: Alcohol and Lactic Acid

Alcoholic fermentation—occurs in bacteria, yeast, and plants. It produces alcohol, carbon dioxide and a small amount of energy.

Lactic acid fermentation—occurs in muscle cells Lactic acid is produced in the muscles during rapid exercise when the body cannot supply enough oxygen to the tissues—causes burning sensation in muscles

Energy & Cellular respiration double entry journal