Life Science: NGSSS

Structures in the mammalian body work together to perform specific functions. The diagram below shows the organization of structures found in the body of a rat.

A picture of which of the following structures belongs in the white box?

• Tissue

• Organ

• System

• Cell

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The image shows an organism. What level of organization is depicted by the brain in the illustration?

• organ level

• 
  tissue level

• 
  cellular level

• organ system level

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According to cell theory, the cell is the basic unit of life. In multicellular eukaryotes, cells are organized into tissues made of different cell types that carry out specific functions. Review the model of how cells are organized in plants. Identify the missing label in this model.

• leaf

• organ

• epidermis (skin)

• photosynthetic tissue

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Which of the following is found in all living organisms?

• 
  Cell

• Organ

• Organ system

• 
  Tissue

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This picture shows the process of mitosis. Which part of the cell theory is supported by the process of mitosis?

• All living things are made of cells.

• 
  All cells come from preexisting cells.

• 
  Mitosis does not support any of the parts of the cell theory.

• Cells are the basic unit of structure and function in living things.

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Plant and animal cells differ in a variety of ways. Notice when you compare the model cells, plant cells contain chloroplasts and animal cells do not. What is the function of this organelle found in plant cells?

• 
  It is the site of photosynthesis, where glucose is produced.

• 
  It is the site of cellular respiration, where cellular energy is produced.

• 
  It is the site of cellular digestion; glucose is broken down to produce energy.

• 
  It is the site of protein synthesis; amino acids are joined together to make proteins.

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Plant and animal cells are very similar. Which of these do plant and animal cells have in common?

• 
  Both have a nucleus.

• Both have a cell wall.

• Both have chloroplasts.

• Both are both the same shape.

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Which of these plant cell organelles helps to maintain homeostasis by regulating what enters and leaves the cell?

• Chloroplast
• Nucleus
• Mitochondria
• Cell membrane

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Plant and animal cells are both eukaryotic cells containing organelles and a nucleus containing DNA. However, plant and animal cells are different from one another due to their specialized functions. While plants and animals obtain energy in different ways, both must convert their food energy to usable energy in the form of ATP. What organelle do they both possess that is used in making ATP?

• Golgi apparatus
• Endoplasmic reticulum
• Mitochondria
• Chloroplasts

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SC.6.L.14.4

Which letter on this diagram of the human body shows the location where acids and enzymes break down and digest food?

• A

• B

• C

• D

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