1' What is the question of the investigation

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1. What is the question of the investigation?

• Is DDT causing eggshells to break?

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Fall Multiple Choice Final Study Guide Answers
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2. What is the hypothesis of the above paragraph?

• If DDT is present in water and fish, nests will
  have more broken eggs

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3. How should they test the hypothesis that DDT
is weakening the eagle egg shell causing them to
crack?

• Test multiple areas with and without DDT to see
  if more DDTmore broken eggs

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4. What is the conclusion of the experiment? What
evidence supports your conclusion?

• If DDT is present in water and fish, more eggs
  crack
• Group 1 has DDT and 100 broken eggs
• Group 2 no DDT and 0 broken eggs
• Group 3 has DDT and 95 broken eggs
• Group 4 no DDT and 0 broken eggs

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5. What would be an appropriate and realistic
solution to the problem?

• Stop using DDT

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6. In order to insure that the results about the
effects of DDT on eagle eggshells are valid, the
follow-up experiment should be

• Many possible answers
• Test to see how much DDT is present in eagles
• Have a group of eagles only eat fish containing
  DDT (more controlled experiment situation)

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7. What molecule gives the cell the energy for
cellular growth, development, and repair?

• ATP!

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8. Cell respiration steps

• Glucose
• Glycolysis
• Pyruvic Acid
• Krebs Cycle
• Electron Transport Chain

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9. Fill in the blanks with phases or cell parts
Centriole
Prophase
Chromosome
Metaphase
Anaphase
Telophase
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10. Why is it important during the anaphase for
the sister chromatids to separate?

• So each daughter cell has the same of
  chromosomes as the original cell

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11. What is the reason cells go through cellular
division?

• To create new cells

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12. What is the reason reproductive cells go
through meiosis?

• To reduce the of chromosomes from diploid to
  haploid

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13. What is the relationship between DNA, genes,
and chromosomes?

• Chromosomes are made out of DNA which is made out
  of genes

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14. Which base bonds to which base in a DNA
molecule?

• AT
• CG

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15. Which base bonds to which base in an RNA
molecule?

• AU
• CG

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16. Describe the 3 differences between a molecule
of DNA and a molecule of RNA

• DNA 2 strands, Deoxyribose, Thymine
• RNA 1 strand, Ribose, Uracil

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17. What is the function of the entire molecule
in figure 1?

• DNA? instructions for the cell

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18. What is the name of the structure labeled X?

• nucleotide

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19. What type of bonds form between bases adenine
and thymine as well as guanine and cytosine?

• Hydrogen bonds

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20. When purines (A/G) and pyrimidenes (T/C) bond
what process is occuring?

• Base pairing

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21. Explain what the following scientists
contributed to the discovery of DNAs structure
and function

• Chargaff base pairing rules
• Franklin double helix
• Watson and Crick model

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22. Replicate a daughter strand from the parental
strand of DNA

• GATTACA
• CTAATGT

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23. Are the parent cells haploid or diploid?

• Haploid

Father Mother
Offspring

Fig 2 (23) (23)
? (46)
Chromosomes Chromosomes
Chromosomes
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24. Which parent will the offspring look like?
Why?

• Both! ½ of DNA from each

Father Mother
Offspring

Fig 2 (23) (23)
? (46)
Chromosomes Chromosomes
Chromosomes
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25. Is the offspring haploid or diploid?

• diploid

Father Mother
Offspring

Fig 2 (23) (23)
? (46)
Chromosomes Chromosomes
Chromosomes
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26. Why is there variation among cells that
undergo meiosis instead of mitosis

• Homologous chromosomes line up randomly and
  separate

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27. Which process of photosynthesis turns
sunlight into ATP?

• Light dependent

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28. How many molecules of ATP are produced as a
result of glycolysis, Krebs cycle and electron
transport chain?

• 38 ATP
• (2 from glycolysis, 2 from Krebs cycle, 34 from
  electron transport chain)

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29. List the structures that are common to both
prokaryotic and eukaryotic cells

• Cell membrane
• Cytoplasm
• DNA

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30. Which products of animal respiration are used
by plants as reactants of photosynthesis?

• H2O and CO2 (water and carbon dioxide)

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31. Write the chemical and word equation of
photosynthesis and respiration

• Photosynthesis
• CO2 H2O ? C6H12O6 O2
• Carbon dioxide water ? sugar oxygen
• Respiration
• C6H12O6 O2 ? CO2 H2O
• Sugar oxygen ? carbon dioxide water

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32. List the reactants and products of both
photosynthesis and respiration

• Photosynthesis
• Reactants CO2 H2O
• Products C6H12O6 O2
• Respiration
• Reactants C6H12O6 O2
• Products CO2 H2O

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33. Which of the following is not an electron
carrier?

• NAD
• FAD
• NADH
• ADP

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34. Which type of cell has a nucleus?

• Eukaryote

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35. The main source of energy for an animal cell
is

• glucose

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36. The structure responsible for ridding the
cell of foreign matter and dead organelles

• lysosome

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37. The fluid material that suspends organelles
and other materials in the cell

• cytoplasm

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38. The structure that controls cellular function
and stores genetic information

• nucleus

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39. Converts sunlight into usable energy for a
plant cell

• chloroplast

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40. After many experiments, the scientist is very
confident about his findings. He would like other
scientists to know about his work. What would be
the best way for him to communicate his findings?

• Publish it

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41. In order for an experiment to be accepted by
other scientists, a scientist must be able to

• Redo the experiment

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42. Something may be called a theory after

• tested many times by many different people

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43. You cut your finger during a dissection. What
should you do first?

• Tell the teacher!

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44. A researcher discovers a plant that can be
used as a treatment for cancer, what type of
science is being conducted?

• Applied science

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45. What does a valid scientific explanation, or
theory, require?

• 1. Logical - correct and valid reasoning,
• 2. peer review - An assessment of a product
  conducted by a person or persons of similar
  expertise to the author
• 3. public anyone is able to read and critique
  the information, not set aside for only a certain
  group ofpeople
• 4. respectful of rules of evidence and
  scientific theory (all evidence must be collected
  using the proper scientific method)

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46. Which cell part is responsible for cell
respiration?

• Mitochondria

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47. Which cell part is responsible for protein
synthesis?

• Ribosome

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48. Which cell part is responsible for delivering
proteins to the golgi body?

• Endoplasmic Reticulum

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49. Which cell part can store materials such as
water, proteins or other materials?

• Vacuole

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50. Which structure provides support and rigidity
to a plant cell?

• Cell wall

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51. This structure is selectively permeable to
substance outside and inside the cell.

• Cell membrane

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52. Site of photosynthesis.

• Chloroplast

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53. Diagram the processes of osmosis and
diffusion using a beaker divided by a selectively
permeable membrane.
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54. Explain why facilitated diffusion is
different from diffusion?

• Molecules still move from high to low
  concentration, but molecules are too large to fit
  through the cell membrane so a protein must be
  used to transport it

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55. _____ transport is the movement of substances
across the cell membrane without the need for
energy.

• passive

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56. When substances need energy to cross the cell
membrane, it is referred to as

• Active transport

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57. Which macromolecule is used to make up
by-layer portion of the cell membrane?

• Lipids

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58. This macromolecule is use to make muscles,
skin and hair.

• Proteins

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59. This macromolecule is broken down in the
process of respiration into energy for the cell.

• Carbohydrates

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60. List the levels of organization of living
organisms from smallest to largest.

• Cell
• Tissue
• Organ
• Organ System

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61. List the functions of water in a cell.

• Water dissolves chemicals that cells are in need
  of
• helps keep their size and shape.
• Helps keep cell's temperature from changing
  rapidly

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62. _______ is a possible explanation to the
outcome of an experiment.

• Hypothesis

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63. This is the part of the experiment is the
baseline that you compare your results to.

• control

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64. This is the variable you measure.

• Dependent

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65. This is the variable you test

• Independent

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66. Draw a graph to represent each of the
following relationships

• No relationship
• Negative
• Positive