Cell Biology: Hsa Practice Assessment

HSA Review BIOLOGY HSA PRACTICE TEST

CELL BIOLOGY PRACTICE TEST Part A. Selected-Response Questions

_____ 1. A student determines the pH of a solution into which he is placing a cell. Which pH value would indicate that the solution is acidic? A. 3.1 B. 7.0 C. 8.9 D. 13.8

_____ 2. The ability of the human body to regulate its internal temperature is an example of A. osmosis B. respiration C. homeostasis D. binary fission

Directions Use the diagram of the plant cell to answer Numbers 3 and 4. TYPICAL PLANT CELL

_____ 3. In which organelle does photosynthesis take place? A. nucleus B. vacuole C. chloroplast D. mitochondrion

_____ 4. In which organelle are amino acids linked together to form proteins? A. vacuole B. ribosome C. chloroplast D. mitochondrion

Biology HSA Review Spring 2006 Cell Biology Practice Test 1 HSA Review BIOLOGY HSA PRACTICE TEST

_____ 5. Groups of cells are organized into tissues. Examples of tissues in the human body are epithelial, connective, and muscular. Cells are organized into tissues by similar A. age B. size C. location D. function

_____ 6. Red blood cells contain tiny pores through which they can absorb materials such as glucose without expending energy. Glucose molecules move from areas where they are highly concentrated to areas where the concentration is less. This describes A. fission B. mitosis C. diffusion D. active transport

_____ 7. Which of these correctly shows the levels of organization in a multicellular organism from simplest to most complex? A. tissue, cell, organ, organ system B. cell, tissue, organ, organ system C. organ system, organ, tissue, cell D. organ, tissue, cell, organ system

_____ 8. Which of these cell features identifies an animal cell? A. has a nucleus B. contains cytoplasm C. absence of a cell wall D. carries out photosynthesis

_____ 9. A certain ion is found at a higher concentration inside cells than outside. However, the cells work to maintain a higher concentration than the environment. This most likely describes A. osmosis B. diffusion C. pinocytosis D. active transport

_____ 10. Some organisms that live in the intestines of cows do not require oxygen to survive. Which of these most likely describes the process by which these organisms obtain energy? A. osmosis B. pinocytosis C. aerobic respiration D. anaerobic respiration

Directions Use the diagram below to answer Number 11. FLOW OF SUBSTANCES INTO AND OUT OF CELLS

_____ 11. Each of the cells shown above is placed into a fresh water environment. The cell membrane is permeable to water but not to the particles indicated by dots in the diagrams. In which of these situations will water flow into the cell? A. in any situation in which the percentage of water inside of the cell is less than the percentage of water outside of the cell B. in any situation in which the percentage of water inside the cell is greater than the percentage of water outside of the cell C. in none of the situations shown above D. in all of the situations shown above

_____ 12. Which of these organelles can be compared to a “clean-up crew?” A. ribosome B. mitochondrion C. endoplasmic reticulum D. lysosome

_____ 13. A wildlife biologist is investigating a sudden increase in the death rate among several bird species. She has not been able to determine what disease or toxin is causing the deaths, but she has found that many of the sick birds are exhibiting a shortage of dissolved oxygen and a buildup of dissolved carbon dioxide in their cells. Which of these body systems in the sick birds is most likely not functioning properly? A. muscular C. circulatory B. excretory D. reproductive

_____ 14. Euglena and Paramecium are eukaryotes because they both A. have a nucleus B. have ribosomes C. reproduce by sexual reproduction D. reproduce by asexual reproduction

_____ 15. The cell wall helps a plant cell maintain its shape. What is the main structural component of the cell wall? A. lipid B. cellulose C. amino acid D. nucleic acid

_____ 16. When the cells of most organisms freeze, they burst. Which of these properties of water enables this to occur? A. solubility B. specific heat. C. density D. polarity

_____ 17. Aerobic respiration occurs in the A. ribosomes B. nucleus C. mitochondria D. vacuoles

_____ 18. The whip-like tail possessed by some cells A. facilitates cellular respiration B. is used when the cell releases wastes C. assists in reproduction D. is used for movement

_____ 19. A single-celled organism is exposed to a toxin. As a result, the organism will most likely A. weaken or die B. grow larger and flourish C. absorb and feed off the toxin D. reproduce and become a multicellular organism

_____ 20. The cells of an earthworm have 36 chromosomes. How many chromosomes are in the sex cells of an earthworm? A. 9 B. 18 C. 36 D. 72

_____ 21. A student wants to determine if a cell is plant or animal. Which of these tools would be best to help the student to make that determination? A. thermometer B. mass balance C. graduated cylinder D. compound microscope Directions Use the Classification Table below to answer Number 22.

CLASSIFICATION TABLE

Contains a Makes Own Has Cell Group Type of Cells Nucleus Food Walls Unicellular or 1 Yes No Yes multicellular 2 No Unicellular Some species Yes 3 Yes Multicellular Yes Yes Unicellular or 4 Yes Some species Some species multicellular 5 Yes Multicellular No No

_____ 22. According to the table, which group contains oak trees? A. Group 1 B. Group 2 C. Group 3 D. Group 5 _____ 23. Which of these does not occur during sexual reproduction? A. reduction of chromosome number B. binary fission C. crossing over D. cytokinesis

_____ 24. Which of these best describes the end result of mitosis? A. two identical daughter cells B. a chain of identical amino acids C. two daughter cells with differing DNA D. two or more daughter cells with half the DNA of the parent cell _____ 25. Streptococcus is a type of bacteria that causes strept throat in humans. Which of these identifies the type of reproduction seen in Streptococcus? A. meiosis B. crossing over C. binary fission D. budding

Part B. Constructed-Response Questions

26. All organisms must be able to exchange chemical substances between their cells and their environment. Some organisms are unicellular and others are multicellular. These organisms have different strategies to obtain and use these chemical substances.  What chemical substances must be exchanged between an organism and its environment?  Describe the processes that enable these chemical substances to move into and out of the cells.  Describe the role of the cell membrane in the exchange of materials in both unicellular and multicellular organisms.  Describe the role of body systems in the exchange of materials in a multicellular organism.

Write your response on a separate sheet of paper.

Directions Use the information and diagrams below to answer Number 27. BACTERIA AND HUMANS Leptospira, a Streptococcus, a Escherichia coli (E. coli) bacterium that bacterium that from human intestines. causes a serious causes strept These are some of the disease in livestock. throat infections in oldest living organisms humans. on earth.

27. Compare a bacterium and a human body cell. Include in your response.  differences and similarities in cell structure  how the organisms are classified

Directions Use the information and diagram below to answer Number 28. CONTRACTILE VACUOLE IN Paramecium

Contractile vacuole surrounded by radial canals, gives the appearance of a starburst or flower.

Contractile vacuole has emptied Contractile vacuole is full. its contents. Note that button-like area in the center has collapsed like a deflated balloon.

28. In freshwater pond, single-celled organisms like Paramecium may have a special structure called a contractile vacuole, which is used to pump excess water out of the cell.  Explain why this structure is necessary for maintaining a water balance between the cell and its environment.  Explain how excess water gets into the cell in the first place.  Use appropriate scientific terminology in your response.

Biology HSA Review Spring 2006 Cell Biology Practice Test 7