REVIEW STATIONS: Human Sexuality: 2. What types of contraception protect against both STDs and unplanned pregnancy?

Transcription

1 Name REVIEW STATIONS: Human Sexuality: 1. Fill in the contraception chart below with one or two examples of each type of contraception: Behavioral Barrier Hormonal Chemical Example: 2. What types of contraception protect against both STDs and unplanned pregnancy? 3. Which types of contraception are very effective at preventing unplanned pregnancies? 4. Fill in the STI chart below: STD Name Caused by bacteria, virus, or other? Curable or Not Curable? Always has symptoms or Often doesn t have symptoms? Life Threatening or Serious Consequences or No Serious Consequences? HIV/AIDS Chlamydia Scabies Genital Herpes Syphilis Pubic Lice HPV and Genital Warts Gonorrhea 6. What does it mean when an STD is asymptomatic?

2 Evolution and Natural Selection: 1. Below is a series of pictures representing changes in a population of cacti. Pictures 1 and 2 show what happened when a deer came to eat, picture 3 shows the cacti a few weeks later (notice the flowers on the right- hand cactus), and picture 4 shows the situation a few months later. 1. Why would a deer be more likely to eat the left cactus than the right cactus? What adaptation does the cactus on the right have? 2. In figure 3, the right cactus has flowers and seeds, but the cactus that has been eaten by the deer is too damaged to make flowers and seeds, so it cannot reproduce. Figure 4 shows the situation several months later. What has happened? 3. Explain how this is an example of natural selection. 4. How can this example lead to Evolution?

3 Genetics 1. Your crazy aunt Ethel got a Harry Potter lightning bolt scar tattoo on her forehead. When you asked her why she got that tattoo, she explained so that when she gets pregnant, her children will also have Harry Potter scar tattoos on their foreheads. Please help your aunt out and explain why her children will not have a Harry Potter scar. 2. Describe the relationship between genes and traits. 3. A. The allele for a widow s peak is recessive (w) and the allele for a straight hairline is dominant (W). List the possible genotypes and their corresponding phenotypes in the space below. Then identify whether they are heterozygous or homozygous for the trait. Genotypes Phenotypes Homozygous or Heterozygous? B. What are the odds that the child of two parents who have widow s peaks will also have a widow s peak? (HINT: use the square to help you figure it out!) C. How is it possible for two parents who both do not have the phenotype of a widow s peak to produce a child with a widow s peak? (HINT: use the square to help you figure it out!)

4 Mitosis and Meiosis 1. Read the Meiosis article and fill in the chart below: Purpose: Mitosis Meiosis Haploid or Diploid Offspring? Genetically Identical or Genetically Unique Offspring? Reproduction Type: Number of divisions: 2. IN YOUR OWN WORDS: How does meiosis create genetically unique daughter cells? Describe the two methods; pictures are always good! 3. What would be the problem for mitosis AND meiosis if the cell didn t duplicate its DNA before it split? (Use a sketch to help you answer!) 4. Why must meiosis produce sperm and egg cells that are haploid?

5 Name Concentration and Cellular Transport Practice Concentration Examples: 1.) 25 g of glucose in 2000 ml of water: A. Solvent: B. Solute: C. Concentration (ratio and percent): 2.) 10 g of sodium chloride in 200 ml of water: A. Solvent: B. Solute: C. Concentration (ratio and percent): 3.) 30 g of sodium bicarbonate in 1000 ml of water: A. Solvent: B. Solute: C. Concentration (ratio and percent): 4.) Below is a list of the amount of sugars (high fructose corn syrup) in cans of popular soda brands: Coke - 39 grams Dr. Pepper - 38 grams Mt. Dew grams Sprite - 39 grams Pepsi - 41 grams 7 up - 43 grams Each can contains 355 ml of liquid. Express the concentration of each soda and then identify which soda is the most concentrated and the most dilute. How do you know? 5.) Which of the following solutions is more concentrated? How do you know? A. 56 g of sodium chloride in 800 ml of water B. 75 g of sodium chloride in 5000 ml of water C. 25 g of sodium chloride in 100 ml of water

6 6. Directions: 1. Fill in the missing concentration of water or in the cell and solution (must add up to 100%). 2. Draw an arrow to show the net movement of water. 3. Label the type of solution hypertonic, hypotonic, or isotonic on the line below the picture % 2. 10% 10% 18% 3. 95% H2O 4. 15% 85% H2O 15% % H2O 29% 93% Solute 29% H2O

7 7. Intravenous solutions must be prepared so that they are isotonic to red blood cells. A 0.9 % salt solution is isotonic to red blood cells. a. Explain what will happen to a red blood cell placed in a solution of 99.3% water and 0.7% salt. b. Explain what would happen to a red blood cell placed in a solution of 90% water and 10% salt. 8. Salt water crabs have the same proportion of salt in their cells as the water that they live in. Considering this, what would happen to the cells of a crab if you put it in fresh water? Why would this happen? 9. The cell needs to move Ca + (Calcium, a charged molecule), inside it in order to function. In the scenario to the left, what process does the cell HAVE TO USE in order to move the Ca + ions into the cell? Why?

8 10. Match the term with its correct description (HINT cross each word off as you use it!): A. energy H. solvent O. percent concentration B. exocytosis I. hypotonic P. selectively semipermeable C. endocytosis J. osmosis Q. small, uncharged D. passive transport K. hypertonic R. transport proteins E. large, charged L. S. ATP F. active transport M. isotonic G. diffusion N. equilibrium The stuff that does the dissolving in a solution This describes the cell membrane, showing how it lets some things through and blocks other things These types of molecules are always allowed through the membrane Is used during active transport but not passive transport Process by which a cell takes in material by forming a vesicle around it Movement of molecules, like CO2 and O2, across a membrane from an area of higher concentration to an area of lower concentration Process by which a cell expels wastes from a vesicle This is the unit of energy that cells use to perform active transport Solution where the concentration of water molecules is even across the membrane The diffusion of water through a cell membrane These types of molecules are not allowed to pass through the cell membrane Solution where the water is more concentrated inside of the cell than outside These proteins are in the cell membrane and they allow the passage of charged molecules or help move molecules against the concentration gradient The stuff that is dissolved in a solution The movement of dissolved materials through the cell membrane without the use of cellular energy When energy is required to move materials through a cell membrane When concentration of molecules is even throughout a solution Solution where the water is more concentrated outside of the cell than inside (Amount of Solute/Amount of Solvent) x 100 describes how much of a solution is made of the