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SEMESTER I EXAM Review A 2011

SEMESTER I EXAM Review A 2011. SHELDON BIOLOGY. Problem Statement Hypothesis Experiment Conclusion. If and then… Agree or disagree with hypothesis Data tables, graphs What is the effect of…?. Match Parts of Scientific Method. Problem Statement Hypothesis Experiment Conclusion.

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SEMESTER I EXAM Review A 2011

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  1. SEMESTER I EXAMReview A 2011 SHELDON BIOLOGY

  2. Problem Statement Hypothesis Experiment Conclusion If and then… Agree or disagree with hypothesis Data tables, graphs What is the effect of…? Match Parts of Scientific Method

  3. Problem Statement Hypothesis Experiment Conclusion If and then… Agree or disagree with hypothesis Data tables, graphs What is the effect of…? Match Parts of Scientific Method

  4. Identify the variables? Which is the independent variable? Which is the dependent variable?

  5. Identify the variables? Which is the independent variable? (x-AXIS) temperature Which is the dependent variable? (y-AXIS) Log. Generations per hour

  6. If you put cold water in a fish tank, then the fish will slow down. All cells come from pre-existing cells. Hypothesis Theory Which is a HYPOTHESIS and which is a THEORY.

  7. The basic unit of life is a cell All cells come from pre-existing cells. Life comes from rotten meat (non-life). Cell theory Cell theory Spontaneous generation Which is “spontaneous generation” and which is from the “cell theory?”

  8. Which part of the experiment… • Does not contain the tested variable (but is used as a comparison)? • A. control • B. constant • C. independent variable • D. dependent variable? • ANSWER: control

  9. Community Population Organelle Organ System Organism Organ tissue Ecosystem Molecule cell Ecosystem Community Population organism Organ system Organ Tissue Cell Organelle Molecule Put in the correct order:

  10. Where would you dipose of waste chemicals in the lab? • Sink • Chemical waste jar • Trash can • ANSWER: chemical waste jar

  11. One parent Two parents Exactly like parent May be different ASEXUAL SEXUAL ASEXUAL SEXUAL Which goes with ASEXUAL and which goes with SEXUAL reproduction?

  12. HOW MANY VARIABLES DO YOU TEST AT A TIME IN AN EXPERIMENT? • One • Two • Three • As many as you want • ANSWER: ONE

  13. Sum of all the chemical reactions in an organism An organism maintains a stable internal environment even when the external environment is not METABOLISM HOMEOSTASIS Which is HOMEOSTASIS and which is METABOLISM?

  14. Which is the correctly written scientific name for the Great Horned Owl? • A. Bubo virginianus (italic.) • B. Bubo virginianus (no italic.) • C. Bubo Virginianus (both capital.) • D. Bubo Virginianus (underlined + italic.) • E. Bubo virginianus (only underlined) • ANSWER: A and E • Note: genus and species

  15. Same beaker in each trial Set-up of room temperature as compared to hot and cold Same crickets for each trial Constant Control constant Which are constants, which are controls?

  16. Amoeba Carbon Hydrogen blood CELL ATOM ATOM CELL Which are ATOMS (smallest unit of elements) and which are CELLS (smallest living unit)?

  17. The penguin is black and white The penguin acts like a duck The penguin is cute The penguin is eating fish. Observation (senses or measuring) Inference (own opinion, experiences) Inference Observation Which is an INFERENCE and which is an OBSERVATION?

  18. Detect an odor in the lab? Care for acid in eyes Dispose of broken test tube after the lab? Wafting Rinse in eye wash station In the designated broken glass container – Boo Yah What is the correct way to…

  19. The energy used by most organisms for metabolism and growth ULTIMATELY comes from: • A. heat • B. decomposition of plants • C. carbon dioxide • D. sun • ANSWER: D. sun

  20. Hold test tube Protect eyes Hold beaker What would each tool be used for?

  21. How many p, n, and e-? • 19 mass number (p + n) • F • 9 atomic number (p) (also e-) • ANSWER: 9 p, 9 e-, 10 n • p+ and e- = at. no. • #n = mass no. – at. no.

  22. Prokaryotic – no nucleus • bacteria • Eukaryotic – has a nucleus • protists, fungi, plants, animals

  23. Atoms with different number of neutrons from its neutral atom (as seen on Periodic Table) is: • An ion • An isotope • A bond • A molecule • ANSWER: an isotope

  24. Water has unequal sharing of electrons. It is… • A. nonpolar ionic • B. nonpolar covalent • C. polar ionic • D. polar covalent • ANSWER: D

  25. Interpret the graph Independent variable Dependent variable Which sugar induces more bacterial growth?

  26. Interpret the graph Independent variable – Time (hours) Dependent variable –log number of viable bacterial/mL Which sugar induces more bacterial growth? Glucose only

  27. In a salt water solution, identify the solute, the solvent, and the solution: • Solute = salt (is being dissolved) • Solvent = water • (does the dissolving) • Solution = solvent + solute

  28. Which shows the correct bonding ability of carbon?

  29. Which shows the correct bonding ability of carbon? Carbon has 4 electrons in its outermost shell…so it can bond to four more to have a filled shell.

  30. Atoms with different number of electrons from its neutral atom is: • An ion • An isotope • A bond • A molecule • ANSWER: an ion (charged atom, lost or gained electrons)

  31. Ice floats because… • A. it is colder than liquid water • B. its water molecules are farther apart due to H-bonding (under 4oC) • C. it is denser than liquid water • D. its molecules are moving faster • ANSWER: B • H-bonding = H+ end attracts • O- end

  32. Fill in the blanks: • In an ionic bond the electrons are _______________ and in a covalent bond the electrons are_______. • ANSWER: transferred (lost/gained) • shared

  33. Surface tension Heat of fusion Capillarity High High Rises in narrow tubes Describe water’s property

  34. Na C O H Sodium Carbon Oxygen hydrogen What is the element?

  35. An atom is stable when… • A. number of electrons = number of protons • B. outer electron shells are full • C. number of neutrons = number of protons • ANSWER: B

  36. Electron Proton neutron Negative Positive neutral What is the charge of each?

  37. Which tool is the most precise for measuring water?

  38. Which tool is the most precise for measuring water?(graduated cylinder)

  39. Fill in the blanks • In an acid the ___________ions are donated to the water solution, but in a base the __________ions are donated to the water solution: • ANSWER: H+ OH- • hydronium hydroxide

  40. Glucose C6H12O6 Glycogen (lots of glucoses-animals) Sucrose C12H22O11 Starch (lots of glucoses-plants) Monosaccharide Polysaccharide Disaccharide Polysaccharide MATCH THE TYPE OF CARBO:monosaccharide, disaccharide, polysaccharide

  41. pH 1 pH 6 pH 14 pH 7 pH 8 Weak acid Neutral Weak base Strong base Strong acid Match the pH

  42. pH 1 pH 6 pH 14 pH 7 pH 8 Weak acid Neutral Weak base Strong base Strong acid Match the pH

  43. Which is correct? • A substance that cannot be broken down into other substances by ordinary chemical means is:A. molecule • B. buffer • C. element • D. cell • E. compound • ANSWER: element

  44. A. CH3CH2CH2CH2CH2CH=CHCH2CH=CHOOH B. CH3CH2CH2COOH C. A. polyunsat (more than 1 =) B. satur. (no =) C. monounsat (one =) Which is an saturated, a monounsaturated, or a polyunsaturated fat?

  45. What fat is this the structure for?

  46. What fat is this the structure for? • Steroid (4 fused rings)

  47. Which is an element and which is a compound? • C • CO • Cu • CH4 • ANSWER: element C and Cu • compound CO and CH4

  48. Which is a symbol and which is a formula? • C • CO • Cu • CH4 • ANSWER: symbol (abrev. for element) C and Cu • formula (abrev. For compound) CO and CH4

  49. Which should you not do to heated test tubes? (may be more than one) • 1. Heat • 2. Heat with a cork • 3. Throw away if chipped • 4. Point toward you • 5. Hold with a test tube clamp if hot • ANSWER: 2 and 4

  50. Why do atoms join other atoms to form compounds? • A. to make even number of electrons • B. to fill their outer electron shells • C. to become neutral • ANSWER: B • Fill 2,8,8

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