3. Living things contain units of structure and function that
arise from
preexisting units. This statement best describes the
1. cell theory.
2. lock-and-key model of enzyme activity
3. concept of natural selection
4. heterotroph hypothesis
4. Which structures could most likely be observed in
cells in the
low-power field of a compound light microscope?
1.cell walls and chloroplasts
2. ribosomes and endoplasmic reticula
3. lysosomes and genes
4. nucleotides and mitochondria
5. What would most likely happen if the ribosomes in a cell
were not
functioning?
1.The cell would undergo uncontrolled
mitotic cell division.
2. The synthesis of enzymes would stop.
3 The cell would produce antibodies.
4 The rate of transport of glucose in the cytoplasm would
increase.
6 Most of the chemical reactions occurring in a living cell
depend on the
presence of an inorganic compound known as
1 glycerol
2 glycogen
3 maltose
4 water
7 What is a major distinction between living and nonliving
matter?
1.Living matter is unable to diffuse
materials.
2.Living matter is able to control chemical activities with
organic
catalysts.
3.Living matter is able to create energy.
4.Living matter is unable to use energy for metabolic activities.
8.Which organism is correctly paired with its main adaptation
for gas
exchange?
1 ameba-nucleus
2 earthworm- nephridia
3 grasshopper- tracheal tubes
4 human -skin
Base your answers to questions 9 and 10 on the diagram below
and on
your knowledge of biology. The diagram represents some processes
occurring in the leaf of a plant.
9 Which equation illustrates a process of nutrition carried out
within the
leaf?
B + D → A + C
A + C → A + B + D
B + C → A + D
A + B + D → B + C
10. Which letters indicate substances needed by the leaf to
carry out the
process of aerobic cellular respiration?
(1) A and C (3) B and C
(2) C and D (4) B and D
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