S.C.O.P.E.S. Students Creating Ownership Practicing Everyday Science BIOLOGY T2 2015-2016 T2 SCOPES: Week 1 (October 26-30) 1-1 (4B-R) The diagram to the right shows changes in the concentrations of sodium and potassium ions inside and outside a nerve cell. These changes prepare the nerve cell to conduct an electrical impulse. Which of the following processes is directly responsible for these changes in the concentrations of sodium and potassium ions inside and outside the nerve cell? A active transport B enzyme activity C osmosis D transcription 1-2 (9B-S) Cyanide is a powerful poison because it inhibits an enzyme in mitochondria, preventing the transfer of energy during one of the steps in cellular respiration. This poison would directly affect the production of which of the following molecules? F ATP H Oxygen G Glucose J DNA 1-3 (9C-S) Which of the following roles does an enzyme play when the body processes sucrose (table sugar) into glucose and fructose? A An enzyme decreases the body’s need for sucrose. B An enzyme increases the amount of sucrose available. C An enzyme increase the rate at which the sucrose breaks down. D An enzyme decreases the amount of fructose and glucose product available. 1-4 (9B-S) The illustration to the right shows an organelle from a cell. Which of the following organisms in a pond ecosystem uses this organelle to produce food? F frog G mayfly H fish J willow tree 1-5 (6B-S) What characteristic do all living things share? A They need oxygen to survive. C They are made up of many parts. B They contain DNA. D They reproduce by mitosis. 1-6 (9C-S) Substances X and Y are examples of which kind of molecule? F simple sugar G amino acid H fat J hormone 1 S.C.O.P.E.S. Students Creating Ownership Practicing Everyday Science BIOLOGY T2 2015-2016 T2 SCOPES: Week 2 (November 2-6) 2-1 (9B-S) The following equation represents the process of photosynthesis in green plants. What happens to most of the light energy during photosynthesis? A It is transformed into heat energy. B It is transformed into chemical energy. C It is changed into carbon dioxide. D It is changed into oxygen. 2-2 (4B-R) A laboratory technician places red blood cells into three different solutions. Observations are recorded each minute for five minutes. Which of the following best explains what is causing the red blood cells in solution 1 to change size of the five-minute period? F Water is entering the cells faster than it is leaving the cells. G Water is leaving the cells faster than it is entering the cells. H The cells are making new proteins. J The cell’s membranes are dissolving. 2-3 (9B-S) In periods of hot, dry weather, the pores on the leaf surfaces of most plants close in order to reduce water loss during the day. When these pores are closed, plants cannot take in carbon dioxide. As a direct result, the rate of which of the following processes decreases? A cellular respiration B mitosis C nitrogen fixation D photosynthesis 2-4 (4A-S) A single prokaryotic cell can divide several times in an hour. Few eukaryotic cells can divide as quickly. Which of the following statements best explains this difference? F Eukaryotic cells are smaller than prokaryotic cells. G Eukaryotic cells have less DNA than prokaryotic cells H Eukaryotic cells have more cell walls than prokaryotic cells. J Eukaryotic cells are more structurally complex than prokaryotic cells. 2 S.C.O.P.E.S. Students Creating Ownership Practicing Everyday Science BIOLOGY T2 2015-2016 2-5 (4B-R) The diagram shows a plant cell before and after it is placed in a solution. After the cell is placed in the solution, it changes shape. Which table shows the initial concentration of solute in the cell and in the solution that would cause the cell to change shape as shown in the diagram? 2-6 (4B-R) Researchers have discovered a toxin that stops cells from releasing stored energy. Cells exposed to this toxin cannot carry out many normal processes. When cells are exposed to this toxin, which of these processes is least affected? F cell division G osmosis H aerobic respiration J photosynthesis 3 S.C.O.P.E.S. Students Creating Ownership Practicing Everyday Science BIOLOGY T2 2015-2016 T2 SCOPES: Week 3 (November 9-13) 3-1 (5A-R) The diagrams shown represent stages of a cellular process. Which is the correct sequence of these stages? A B C D ABCD BDCA CBDA DBAC 3-2 (4B-R) A cross section of part of a Golgi complex is shown below. Part of the membrane of the Golgi complex pinches off and moves away. Which of the following is a function of this process? F to release energy from ATP G to deliver proteins to other locations in the cell H to collect amino acids for use in protein synthesis J to send messages about cell requirements to the nucleus 3-3 (5A-R) The cell in the diagram below illustrates a stage of mitotic cell division. Letter B indicates the – A B C D paired chromosomes centrioles cell plate endoplasmic reticulum 3-4 (5A-R) Which of the following statements best describes each new molecule of DNA produced when DNA replicates? F Each new molecule is half the length of the original molecules. G Each new molecule has only the coding portions of the original molecule in its sequence. H Each new molecule contains one strand from the original and one newly synthesized strand. J Each new molecules retains the A, C, an G bases in the DNA sequence, but replaces the T base with U. 4 S.C.O.P.E.S. Students Creating Ownership Practicing Everyday Science BIOLOGY T2 2015-2016 3-5 (5A-R) At which point would hydrogen bonding between two nitrogenous bases normally occur? A B C D A B C D 3-6 (5A-R) The phrases below describe several events that occur during the process of mitosis. V attachment of double-stranded chromosomes to the spindle apparatus W formation of single-stranded chromosomes, which are moved to opposite ends of the cell X disintegration of the nuclear membrane Y nuclear membrane formation around each set of chromosomes, forming two nuclei Z synthesis of a spindle apparatus Which sequence represents the correct order of these events? F V WXYZ G W Y V X Z H VYZWX J XZVWY 5