1. 6 days to the HSA! Do Now 1.Take out all 3 home assignments so I can check them. (Energy use review, crossword, and letter home) 2.Number a sheet of paper from 1 to 12 and begin working on the practice HSA questions. Skip any BCR questions.

2. Vitamins and Minerals Vitamins and minerals are required by the human body (and other organisms) to function properly. A vitamin or mineral deficiency can cause disease or other disorders.

3. Minerals Minerals are INORGANIC substances an organism needs, for example: – Calcium for bone development – Iron for red blood cells – Zinc for DNA polymerase and other enzymes

4. Vitamins Vitamins are ORGANIC compounds that your body needs to grow and function properly. The HSA may ask questions about 3 of these vitamins, though there are MANY more… – Vitamin C helps your immune system fight infections. – Vitamin D is required for bone development – Vitamin K helps your blood to clot after an injury

5. Feedback Feedback occurs in many biological systems, as well as lots of abiotic ones. Feedback refers to a situation where related events have an effect on the future functioning of a system An example…

6. Grades = Feedback. How it’s supposed to work: Bob takes a test Bob gets grades Bob studies and does homework

7. Biological Feedback: insulin Insulin is a hormone that causes cells in the body to absorb glucose in the blood and store it for later use. Bob overdoses on M&Ms Bob’s pancreas releases insulin Bob’s liver absorbs blood glucose

8. Feedback is a control system Blood glucose too high Insulin released Blood glucose lower No insulin released

9. 2009 HSA Question This is an example of A.Polarity B. feedback C. natural selection D. anaerobic respiration

10. Energy Use Review Photosynthesis: MUST MEMORIZE! KEY CONCEPT!!! CO 2 + H 2 O + Light energy  C 6 H 12 O 6 + O 2 Happens in chloroplasts of plants. Light reactions capture light energy, store it in ATP Chlorophyll captures light Calvin Cycle builds carbohydrates from CO 2.

11. Respiration makes ATP Respiration breaks down chemicals to make ATP energy. Aerobic = with oxygen, anaerobic = without oxygen Mitochondria do aerobic respiration Aerobic respiration = photosynthesis in reverse (energy out is ATP, not light) ATP = cell energy

12. Practice Question Review (1-12) #13 – 23 for homework (skip BCRs) Begin studying!!! – Start with the review sheets we got already Memorize 4 classes of macromolecules, their subunits, and functions Memorize 3 vitamins from today Memorize 7 cell parts and functions – QUIZ ON THESE 3 TOPICS TOMORROW!!!