Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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An atom’s nucleus contains ______.
a. | neutrons only | c. | neutrons, protons, and electrons | b. | protons and
electrons | d. | protons and
neutrons |
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2.
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A chemical formula shows the kind and number of atoms that form a ______.
a. | compound | c. | solution | b. | mixture | d. | suspension |
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3.
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Organic compounds that store important coded information in cells are
______.
a. | carbohydrates | c. | nucleic acids | b. | lipids | d. | water molecules |
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4.
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The function of the selectively permeable cell ______ is to allow some things to
pass through it, but not others.
a. | cytoplasm | c. | nucleus | b. | membrane | d. | wall |
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5.
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Bacteria are taken into cells by ______.
a. | diffusion | c. | exocytosis | b. | endocytosis | d. | osmosis |
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6.
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Organic compounds are compounds that always contain ______.
a. | carbon | c. | nitrogen | b. | calcium | d. | oxygen |
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7.
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______ are organic compounds made of sugars or starches.
a. | Carbohydrates | c. | Lipids | b. | Enzymes | d. | Nucleic acids |
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8.
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______ are organic compounds that store energy.
a. | Enzymes | c. | Nucleic acids | b. | Lipids | d. | Proteins |
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9.
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In a(n) ______, substances mix evenly with other substances.
a. | inorganic compound | c. | solution | b. | organic compound | d. | suspension |
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10.
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The movement of large molecules through the cell membrane out of the cell is
called ______.
a. | endocytosis | c. | homeostasis | b. | exocytosis | d. | osmosis |
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11.
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If the movement of molecules requires energy, it is ______.
a. | active transport | c. | osmosis | b. | diffusion | d. | passive
transport |
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12.
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______ is a process that releases energy when oxygen is insufficient.
a. | Photosynthesis | c. | Fermentati | b. | Equilibrium | d. | Metabolization |
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13.
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______ are organisms that can’t make food.
a. | Plants | c. | Consumers | b. | Enzymes | d. | Producers |
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14.
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Producers use light energy to make ______.
a. | chlorophyll | c. | proteins | b. | glucose | d. | starch |
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Completion
Complete each
statement.
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Select the term from the following list that matches each
description.
active transport | energy | enzyme | inorganic compound | consumer | equilibrium | metabolism | diffusion | mixture | exocytosis | matter | Endocytosis | fermentation | | passive transport | producer | organic compound | osmosis | | | | | | | | |
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15.
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movement of molecules without the input of energy ____________________
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16.
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passive transport of water by diffusion ____________________
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17.
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protein binds to a particle and uses energy to move through the cell membrane
____________________
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18.
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condition in which molecules of a substance are spread evenly throughout a space
____________________
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19.
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an organism that makes its own food ____________________
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20.
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a substance that speeds up a chemical reaction ____________________
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21.
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a process by which vesicles release their contents outside the cell
____________________
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22.
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all of the activities that occur within the cells of an organism
____________________
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23.
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movement of molecules from an area of more molecules to an area of less
molecules ____________________
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24.
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an organism that can’t make its own food ____________________
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25.
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compound containing carbon and hydrogen and is associated with living things
____________________
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26.
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process that releases energy without using oxygen ____________________
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27.
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a substance made of elements other than carbon ____________________
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28.
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process of taking substances into a cell by surrounding it with the cell
membrane ____________________
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29.
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combination of substances in which each substance retains its own properties
____________________
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30.
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has mass and takes up space ____________________
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31.
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the ability to cause change ____________________
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Identify the following examples as a compound or a
mixture.
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32.
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glucose ____________________
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33.
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blood ____________________
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Identify the following examples as organic or
inorganic.
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34.
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water ____________________
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35.
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cellulose ____________________
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36.
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calcium ____________________
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37.
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chlorophyll ____________________
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38.
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carbon dioxide ____________________
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39.
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DNA ____________________
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Identify the following as part of active transport or
passive transport.
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40.
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mineral movement into plant root ____________________
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41.
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osmosis ____________________
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42.
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carrier proteins ____________________
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43.
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diffusion ____________________
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Choose P if the item describes photosynthesis or R
if it describes respiration.
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44.
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carbon dioxide is waste ____________________
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45.
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occurs in mitochondria ____________________
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46.
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oxygen given off ____________________
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47.
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makes glucose from CO2 ____________________
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48.
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uses light energy ____________________
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49.
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uses chlorophyll ____________________
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Matching
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Match the term with the correct description. Some items may not be
used. a. | active transport | h. | metabolism | b. | diffusion | i. | mixture | c. | endocytosis | j. | organic compound | d. | enzyme | k. | osmosis | e. | exocytosis | l. | passive transport | f. | fermentation | m. | producer | g. | inorganic
compound |
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50.
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the total of all chemical reactions in an organism
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51.
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an organism that makes its own food
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52.
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movement of molecules from an area where there are many to an area where there
are few
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53.
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compound that does not contain carbon
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54.
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a substance that speeds up a chemical reaction in a cell
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55.
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passive transport of water by diffusion
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56.
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when the contents of a vesicle are released by the cell
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57.
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movement of substances without the use of energy
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58.
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large molecules are surrounded by the cell membrane and enter the cell
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59.
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a combination of substances; each substance keeps its identity
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Match the term with the correct description. a. | active transport | e. | producer | b. | neutron | f. | proton | c. | diffusion | g. | solution | d. | electron | h. | suspension |
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60.
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particle with a negative charge
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61.
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particle with a positive charge
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62.
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particle with no charge
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63.
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salt and water mixture
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64.
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blood
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65.
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plant that contains chlorophyll
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66.
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movement of minerals into plant root cells
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67.
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dispersal of air freshener throughout a room
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Short Answer
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68.
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Explain the difference between compounds and mixtures.
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69.
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Explain the difference between organic and inorganic compounds.
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70.
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Explain the function of a selectively permeable membrane.
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Use this information to answer the following questions.
When
you drop a sugar cube in a glass of water, at first the water doesn’t taste sweet. Later, it
tastes very sweet.
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71.
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What causes the change in the water’s taste?
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72.
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Is active or passive transport involved?
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73.
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What is the name of this type of molecule movement?
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74.
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What term explains molecule movement to maintain a balance with the
environment?
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Use this information to answer the following questions.
When
making yeast bread dough, the dough rises after a while in the pan.
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75.
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What causes dough to rise?
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76.
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What is the name of this process?
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77.
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Complete the paragraph by filling in the blanks. In a mixture, substances a)____ their original properties. Mixtures
are important in life processes. A b)____ is a mixture in which one or more substances mix
evenly with other substances. A c)____ is a mixture in which substances spread through a
liquid or gas but settle out over time. Water is the compound that makes up a larger part of
d)____ matter than any other. Water helps keep the temperature of cells constant so
e)____ reactions can take place.
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Essay
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78.
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Describe the processes of photosynthesis and respiration.
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79.
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How do large molecules enter a cell?
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