Biology Final Exam

Measurements made while observing a plant grow 3 cm over a two-week period are called

• hypotheses
• data
• observations
• variables

Based on your observations, you suggest that the presence of water could accelerate the growth of bread mold. This is

• a conclusion
• a hypothesis
• an analysis
• an experiment

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A well-tested explanation that explains a lot of observations is

• a hypothesis
• an inference
• a theory
• a controlled experiment

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How do scientific theories compare to hypotheses?

• Theories are the same as hypotheses.
  
• Theories unify a broad range of observations and hypotheses.
  
• Hypotheses combine the ideas of several theories to explain events.
  
• Hypotheses are the dominant view among scientists.
  

The process by which organisms keep everything inside their bodies within certain limits is called

• homeostasis
• evolution
• metabolism
• photosynthesis

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Cells in multi-cellular organisms have many different sizes and shapes. These differences in cells are part of cell specialization. Cell specialization allows cells to

• reproduce
• perform different functions
• respond to their environment
• be less complex

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Science differs from other disciplines, such as history and the arts, because science relies on

• facts 
• testing explanations
• observations
• theories

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Which is not a principle of the cell theory?

• Cells are the basic unit of life
• Very few cells are able to reproduce
• Cells are produced from existing cells 
• All living things are made of cells

Which two structures are only found in plant cells? 

• Cell wall and cytoplasm 
• Chloroplast and mitochondria 
• Cell wall and chloroplast 
• Rough ER and Smooth ER 

The organelle stores DNA and manages and controls all the cells activities is the

• nucleus 
• mitochondria 
• Rough ER 
• Smooth ER

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