Multiple Choice
Identify the letter of the choice that
best completes the statement or answers the question.
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1.
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The
structure that forms the outer boundary in living cells is the a. | cell membrane | c. | nuclear membrane | b. | cell wall | d. | vacuole | | | | |
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2.
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Which
of the following is not a component of the cell theory? a. | living organisms do not depend on their individual cells
for support | c. | The cell is the basic functional unit of all
organisms | b. | All living things are made of at least one
cell. | d. | All cells come from previously existing
cells | | | | |
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Use
the following diagram to answer the next three questions.
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3.
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Name
the type of cells shown in this diagram a. | animal cells | c. | plant cells | b. | bacterial cells | d. | none of the above | | | | |
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4.
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How
can you tell whether these are plant or animal cells? a. | the fact that they are reproducing
| c. | the presence of a nucleus | b. | their
shape. | d. | none of the above | | | | |
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5.
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Examine the cells that are circled, close to the centre of the diagram. What is
happening? a. | Nucleus and
nuclear membrane have disappeared. | c. | Spindle fibres
are pulling centromeres apart. | b. | Spindle fibres are pulling double-stranded chromosomes
across the middle of the cell. | d. | Nuclear membrane is reforming.
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6.
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In
which phase of mitosis does the nuclear membrane get disassembled? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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7.
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In
which phase of mitosis do the spindle fibres form? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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8.
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In
which phase of mitosis are the chromosomes pulled into a line across the middle of the
cell? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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9.
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In
which phase of mitosis are the chromosomes moving to opposite ends of the cell? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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10.
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In
which phase of mitosis does the nuclear membrane reform? a. | prophase | c. | anaphase | b. | metaphase | d. | telophase | | | | |
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11.
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In
which phase of the cell cycle is the cell's DNA duplicated? a. | interphase | c. | cytokinesis | b. | mitosis | d. | none of the above | | | | |
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12.
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How is
the cell cycle changed during growth? a. | its rate increases | b. | its rate decreases | c. | its rate does not change. | | |
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13.
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How is
the cell cycle changed by aging? a. | its rate increases | c. | its rate does not change | b. | its rate decreases | | | | |
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14.
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What
is the name of the disease caused by cells dividing too quickly? a. | tuberculosis | c. | meningitis | b. | emphysema | d. | cancer | | | | |
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15.
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Which
of the following is NOT true of asexual reproduction? a. | The offspring are identical to the
parent | c. | There are two
parents | b. | One type is
called budding | d. | None of the above. | | | | |
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16.
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Which
of the following is NOT true of sexual reproduction? a. | It increases genetic variation
| c. | There are two parents | b. | Offspring are identical to their
parents | d. | None of the above | | | | |
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17.
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Cancer
cells are dangerous because: a. | They use valuable nutrients that are intended for the
normal growth of cells in the area | c. | They cannot do
the various jobs of other cells around them | b. | They have a much higher rate of division than normal cells
and crowd out normal cells. | d. | All of the
above. | | | | |
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18.
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Which
organisms reproduce asexually through the process of binary fission? a. | Yeast cells | c. | Bacteria | b. | Fungi | d. | Humans | | | | |
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19.
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Which
one of the following methods do fungi not use to reproduce asexually? a. | budding | c. | spores | b. | binary fission | d. | fragmentation | | | | |
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20.
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What
is the name of the tissue that allows plants to repair themselves and reproduce
asexually? a. | meristem | c. | binary
fission | b. | stem
cells | d. | budding | | | | |
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21.
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Which
organelle controls the entrance and exit of substances to/from the cell? a. | Cell wall | c. | Endoplasmic reticulum | b. | Cell membrane | d. | Chloroplast | | | | |
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Matching
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Match
each correct item with a statement below. a. | binary fission | d. | fragmentation | b. | budding | e. | spore formation | c. | regeneration | | | | |
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1.
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A
small piece breaks away to form a new individual
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2.
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A bud
forms, grows, and breaks away
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3.
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A
reproductive cell that can grow into a new individual through cell division
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4.
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An
organism splits into two new organisms
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5.
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Injured cells are repaired or lost body parts are regrown.
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Answer
the next five questions about asexual reproduction in plants using the following five words.
The diagram below shows pictures that match the descriptions
a. | layering | d. | tissue culture | b. | rooting | e. | grafting | c. | cutting (stems) | | | | |
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6.
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attaching the stem of one plant to the stem of another
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7.
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growing meristem cells in a special solution
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8.
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burying a branch of the parent plant
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9.
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planting a root of a plant
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10.
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planting a parent stem in soil
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Reproductive parts of a flower: examine the diagram on the right. For each
question, fill in the letter of the part of the flower that corresponds to the
description.
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11.
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pollen
is produced here
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12.
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the
male reproductive organ
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13.
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sacs
containing female gametes
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14.
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sticky
"lip" that captures pollen grains
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Match
each correct item with a statement below a. | gamete | e. | blastocyst | b. | haploid | f. | placenta | c. | fertilization | g. | implantation | d. | zygote | | | | |
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15.
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the
process where two gametes combine to form one new cell
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16.
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a
blood-vessel rich organ used to give the fetus nutrients during pregnancy
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17.
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a
specialized cell for reproduction.
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18.
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the
process where the embryo attaches itself to the thickened lining of the uterus
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19.
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the
hollow ball of cells that the zygote has divided to form.
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20.
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a cell
with half the DNA of a regular body cell
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21.
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the
new cell formed by the process of fertilization
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Match
the correct item with a statement below a. | cell membrane | d. | nuclear membrane | b. | cell wall | e. | chloroplast | c. | nucleus | | | | |
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22.
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provides support to plant cells
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23.
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surrounds the cell, controls the entrance and exit of substances to and from the
cell.
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24.
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used
for photosynthesis in plant cells
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25.
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surrounds the nucleus, controls the entrance and exit of subtances to and from the
nucleus.
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26.
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the
control center of the cell, contains the genetic instructions of the cell.
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State
whether each of the following is a description of a. | external reproduction | b. | internal reproduction | | | | |
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27.
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many
young are produced
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28.
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few
young are produced
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29.
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a lot
of care is usually given to the young
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30.
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very
little care is usually given to the young
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31.
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common
in marine animals
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32.
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common
in land animals
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33.
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egg
and sperm meet inside the parents bodies
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34.
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egg
and sperm meet outside the parents bodies
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Match
the correct item with a statement below a. | FSH | c. | LH | b. | estrogen | d. | progesterone | | | | |
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35.
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stimulates the lining of the uterus to thicken
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36.
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a
decrease in this hormone causes the uterine lining to be shed
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37.
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stimulates follicles to develop
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38.
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causes
the pituitary gland to decrease its production of LH and FSH
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39.
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stimulates the pituitary gland to release LH
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40.
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causes
the developing follicle to release a mature egg.
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Match
the description with the correct trimester of fetal development a. | first trimester | c. | third trimester | b. | second trimester | | | | |
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41.
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fetus
rapidly increases in overall size
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42.
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most
organs are formed but not fully developed
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43.
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mother
can begin to feel movement
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44.
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all
major organs have begun their development
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Match
the stage of birth with its description a. | Dilation stage | c. | Placental stage | b. | Expulsion stage | | | | |
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45.
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contractions in the uterus become so forceful that the paby is pushed through the
cervix to teh birth canal.
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46.
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the
placenta and umbilical cord are expelled from the uterus
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47.
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uterine contractions cause the cervix to open, or dilate
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Match
the correct items with their description. a. | biotechnology | b. | selective breeding | c. | cloning | d. | gene therapy | e. | amniocentesis | | |
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48.
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breeding individuals with certain desired traits to produce offspring with similar
traits
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49.
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a
technique where a fetus' genes are checked for genetic disorders
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50.
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various techniques that use living organisms to make products or provide
services.
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51.
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replacing defective genes with healthy ones
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52.
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the
production of identical copies
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