Unit 2A Study Guide: Cell Structure and Function

• The basic unit of structure and function in an organism

• stimulus

• cell

• responsenucleus

• nucleus

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NGSS.MS-LS1-1

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Composed of only one cell

• uniceullar

• multicelluar

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Mistaken belief that living things arise from nonliving things

• spontaneous combustion

• spontaneous generation

• spontaneous growth

• 
  spontaneous response

Organisms whose cells lack a nucleus

• 
  prokaryotes

• eukaryotes

• animal cells

• plant cells

Organisms whose cells contain a nucleus

• prokaryotes

• eukaryotes

• bacteria

• archaebacteria

An instrument that makes small objects look bigger

• teloscope

• binoculars

• microscope

• magnifying glass

Tiny structures that carry out specific functions within the cell

• organisms

• organelle

• organic compounds

• organs

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Controls what substances come into and out of the cell

• cell wallcell membrane

• cell wall

• cytoplasm

• nuclear membrane

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Which property of the cell’s plasma membrane allows some substances to pass through while keeping others out?

• extra cellular matrix

• hydrophobic molecular structure

• 
  

  inflexibility

• 
  

  selective permeability

Center of the cell that controls function and contains genetic information

• mitochondria

• endoplasmic reticulum

• nucleus

• lysosome

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NGSS.MS-LS1-2