Basic Biology

Exercise #22 LAB REPORT Name: Kevin Scheive Section #:22 The Reproductive System Procedure 20.1 Male Reproductive System Structures 1. Where is testosterone produced? It is produced in the testes for men and ovaries in women. 2. What is the function of the epididymis? A duct behind the testis where the sperm goes to the vas deferens. 3. Where does spermatogenesis occur? It occurs in the seminiferous tubules of the male testes. 4. Which three structures contribute to semen? The seminiferous tubules, prostate gland, and seminal vesicles. Procedure 20.2 Female Reproductive System Structures 1. Where does fertilization take place? It occurs in the end of the fallopian tube. 2. What is the function of the uterus? Holds baby till baby is mature enough to be birthed. 3. What structure transports the egg from the ovary to the uterus? The fallopian tube. 4. What is the function of the vagina? Opening where baby comes out during birth and opening for sexual intercourse. 5. Where is the cervix located? It is located on the lower part of the uterus. Procedure 20.3 Microscopic Examination 1. What are the three parts of a sperm? The head, midpiece, then tail, 2. Which hormones are produced by the ovaries? Progesterone and estrogen are produced. 3. Which is larger an egg or a sperm? An egg is much larger than a sperm. Procedure 20.4 Contraceptive Methods 1. What is the most effective contraceptive method (excluding abstinence)? The IUD. 2. What is the least effective contraceptive method? Spermicide. 3. Can more than one contraceptive method be used at the same time? Yes they can. 1 Exercise #22 4. Which method is most effective at preventing both pregnancy and STDs? A condom and pill at the same time. Procedure 20.5 Home Pregnancy tests 1. Home pregnancy tests detect the presence of the hormone hCG in the urine. 2. How long should a woman wait before taking a home pregnancy test? Wait around 2 weeks. STD Questions 1. What are the three most common STDs caused by bacteria? Chlamydia, Gonorrhea, and Genital Herpes. 2. List at least four of the STDs caused by a virus? HIV, HPV, Herpes, and Hepatitis. 3. What are the three most common STDs caused by a parasite? Pubic Lice, Scabies, Trichomoniasis 4. Which of the STDs above can be treated by an antibiotic? Gonorrhea, Chlamydia, Genital Herpes. 5. What is the most common STD in the United States? HPV 6. What is the most common STD in the California? Chlamydia 7. What is the most common STD in Solano County? Chlamydia. 2

BIO | 10 | Basic Biology | lab | Exercise #22 LAB REPORT Name: 

Chapter 1 Quiz 1. Why are correlations less convincing than controlled experimental results? Correlations do not eliminate as many alternative hypothesis 2. Which of the following is a testable hypothesis? Avoiding contact with other people reduces the chance of catching a cold 3. Which of the following is a true statement about experimentation? Some hypothesis cannot be tested by experimentation 4. What would be the most trustworthy source of scientific information? Peer-reviewed research publications 5. Which statement makes a prediction for the hypothesis “bird species have decreased in number in a particular wetland due to construction traffic”? If a wetland area is disrupted by construction vehicles, then the number of bird species will decrease. 6. When graphing data, what scientific information do scientists plot on the x-axis? Independent variable 7. Which feature is necessary for a scientific hypothesis? It is falsifiable 8. Why are hypothesis never accepted as proven by scientists? Alternative hypothesis might provide a better answer to the research question 9. What is the result when a well-tested hypothesis is supported by many independent studies in the scientific community? The hypothesis would be considered a scientific theory 10. What is the purpose of double-blind experiments? To minimize the effects of human basis on the results. 11. When an experiment has a large sample size, and there is a large difference between the results in the experimental and control groups, how likely is that the experimental results are statistically significant? Very likely 12. Which group would be the most effective control subjects in a test of an experimental treatment? The control group should have characteristics very similar to the experimental subjects 13. Which of the following statements is an example of anecdotal evidence? Dr. Jackson’s informercial statement “I believe my personal cure for bowel disorders is more effective than any drug I’ve ever prescribed in 20 years of practicing medicine.” 14. When would an experimental result be considered statistically significant? The result is unlikely to be due to chance alone 15. What would a news report on CNN that describes recently published on a new treatment for cold be an example of? Secondary source 16. Why is the scientific method used? To answer specific questions about the natural world 17. Why is the random assignment of individuals to experimental and control groups important for an experiment? It ensures that each group will better represent the population as a whole 18. There is a strong correlation between stress and susceptibility to colds. What does this mean?

BIO | 10 | Basic Biology | assessment | Chapter 1 Quiz 1. Why are corr

Exercise #21 LAB REPORT Name: Kevin Scheive Section #:21 Respiratory System Procedure 20.1 Respiratory System Structures 1. Make a flow chart of the path that air takes though the respiratory tract. 2. The right lung has three lobes and the left lung has two lobes. 3. What is the function of the diaphragm? The primary muscle used in inhalation, and is located in the lower ribs. 4. Where are the vocal cords located? The vocal cords are located in the larynx. 5. What is the function of the trachea? The trachea is a wide tube that connects the larynx to the bronchi of the lungs. 6. What is the function of the pseudostratified ciliated columnar epithelium that lines the trachea ? It is located in places like the trachea and anywhere at the top of the respiratory system, and they collect materials that shouldn’t be in the respiratory system like dust and etc. 7. What is the function of the nasal cavity? A large empty space behind the nose where the air we breathe first goes before it heads for the lungs. 1 Exercise #21 Procedure 21.3 Make Your Own Lungs 1. Circle the correct terms: During ( inspiration / expiration ) the diaphragm relaxes causing the volume of the thoracic cavity to ( increase / decrease ). During ( inspiration / expiration ) the diaphragm contacts causing the volume of the thoracic cavity to ( increase / decrease ). As the volume of the thoracic cavity decreases the pressure ( increase / decrease ). As the volume of the thoracic cavity increases the pressure ( increase / decrease ). Procedure 21.3 Role of CO 2 in the Regulation of Ventilation Breath Hold Time (Sec) After normal breathing 62 sec After hyperventilation 76 sec After exercise 53 sec Explain why there are differences in the amount of time you can hold your breath after normal breathing, after hyperventilation, and after exercise. Include changes in blood chemistry in your answer. After hyperventilation, your body rids itself of most of the carbon dioxide and fills it with oxygen, so you’ll be able to hold your breath a bit longer, and after exercise I was out of breath and couldn’t manage to hold it as long as normal. Thought Questions 1. What is the Heimlich maneuver? It is a move used to take foreign objects out of the upper respiratory tracts by using your arms to force it up. 2. What is pneumothorax? A pneumothorax is just a collapsed lung. 2

BIO | 10 | Basic Biology | lab | Exercise #21 LAB REPORT Name: 

Chapter 2 Quiz 1. Which of the following is an element? Hydrogen 2. Which organelle performs cellular respiration? Mitochondrion 3. What kind of bond holds two water molecules to each other? Hydrogen bonds 4. If life on Mars is fundamentally like life on Earth, its macromolecules will be based on which element? Carbon 5. Because the electrons in a water molecule are shared unequally between hydrogen and oxygen, water is said to be? Polar 6. Which of the following are found in the nucleus of an atom? Neutrons and protons 7. Proteins are polymers of Amino acids 8. Nonliving things include fire, water, and viruses. Many features of living things are also found in nonliving things. Of the following features, which is most likely to be absent in nonliving things? Homeostasis 9. The plasma membrane of a photosynthetic eukaryotic cell… Isolates the cell’s contents from the external environment 10. Each of the following is a feature of all known living things EXPECT. Genes made from proteins 11. What kind of molecule forms a bilayer that is the basis for all cellular membranes? Phospholipid 12. An atom will be least likely to form chemical bond with other atoms when The valence shell is full of electrons 13. A solution with a pH of 2 has an H+ ion characteristic that is ____ than a solution with a pH of 4. 100 times higher 14. Sodium chloride is composed or molecules that are stable when dry. In the presence of water, however, the atoms that compose the molecules separate from each other. What type of chemical bond holds the dry substance together? Ionic bonds 15. According to the theory of evolution, which states that all life-forms on Earth from a common ancestor, all living organisms Share a common organic chemistry 16. What kind of bond holds the atoms of a single water molecule together? Covalent bonds that are polar 17. Imagine a newly discovered biological molecule that is mostly hydrophobic in its structure. This new molecule will most likely be classified as a Lipid 18. Which features is found in both prokaryotic and eukaryotic cells? DNA 19. Which of the following pairs of molecules can be held together by a hydrogen bond? Two polar molecules

BIO | 10 | Basic Biology | assessment | Chapter 2 Quiz 1. Which of the

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