Regents Living Environment Test Preparation Practice

    Lab Diffusion Through A Membrane

    1
    2

    Base your answer to question 3 on the information and diagrams below and on your knowledge of biology.

    The drawings below were made during a laboratory exercise in which a microscope was used to view slides of preserved protozoa. The microscope had a 10× eyepiece and two different objectives.

    labs, lab, diffusion through a membrane fig: lenv12012-exam_g20.png

    3

    Base your answers to questions 4 on the diagram below and on your knowledge of biology. The diagram represents a model cell setup. The locations of three different substances are indicated in the diagram.

    labs, lab, diffusion through a membrane fig: lenv12013-exam_g31.png

    4
    5
    6

    Base your answers to questions 7 on the information below and on your knowledge of biology.

    One of the effects of Hurricane Katrina, which devastated New Orleans in 2005, was the death of almost all of the plants in flooded areas. Initially, toxic chemicals and bacteria were suspected as a possible cause. Scientists later determined that the salt concentration in the floodwater caused the plants to die.

    7
    8
    9

    Base your answers to questions 10 on the information below and on your knowledge of biology.

    An athlete bought a sport gel food and wanted to test it to see if it contained fats, starches, and glucose. The tests that the student used are shown in the table below.

    labs, lab, diffusion through a membrane fig: lenv12017-exam_g19.png

    10
    11

    Base your answers to questions 12 on the information below and on your knowledge of biology.

    The diagram below represents a lab setup. The artificial cell (dialysis tube) contains a starch solution and the beaker contains a solution of starch indicator and water. The setup is left undisturbed for twenty minutes.

    labs, lab, diffusion through a membrane fig: lenv12020-examw_g26.png

    12

    Base your answers to questions 13 on the information below and on your knowledge of biology.

    An artificial cell filled with a glucose solution was placed in a beaker of water, as represented below. The beaker was left undisturbed for 20 minutes.

    labs, lab, diffusion through a membrane fig: lenv62012-exam_w_g30.png

    13
    14

    Base your answers to questions 15 on the diagram below and on your knowledge of biology. The diagram represents a cell and its changes as a result of two laboratory procedures, A and B.

    labs, lab, diffusion through a membrane fig: lenv62013-examw_g34.png

    15