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Plant Cells
Animal Cells
Cell Theory
Organization of Living Things
Characteristics of Living Things
100

This rigid structure surrounds the cell membrane and helps support a plant cell.

What is the cell wall?

100

100: This organelle contains DNA and directs many cell activities.

  • Answer: What is the nucleus?
100

100: According to cell theory, all living things are made of these.

  • Answer: What are cells?
100

100: A group of similar cells working together forms this level.

  • Answer: What is a tissue?
100

100: Living things are made of one or more of these basic units.

  • Answer: What are cells?
200

200: These organelles capture light energy for photosynthesis.

  • Answer: What are chloroplasts?
200

200: This organelle releases usable energy from food during cellular respiration.

  • Answer: What is the mitochondrion?
200

200: The invention of this lab tool helped scientists develop the cell theory.

  • Answer: What is the microscope?
200

200: Several tissues working together form this level.

  • Answer: What is an organ?
200

200: Living things use energy to carry out this process.

  • Answer: What is metabolism?
300

300: This large storage sac can hold water and help support a plant cell.

  • Answer: What is the central vacuole?
300

300: This flexible boundary controls what enters and leaves an animal cell.

  • Answer: What is the cell membrane?
300

300: New cells come from this source, according to cell theory.

  • Answer: What are other cells?
300

300: Organs that work together to perform major functions make up this level.

  • Answer: What is an organ system?
300

300: This life process allows organisms to produce offspring.

  • Answer: What is reproduction?
400

400: The process by which plants make their own food in the form of glucose?

  • Answer: What is a photosynthesis?
400

400: These tiny structures build proteins by joining amino acids.

  • Answer: What are ribosomes?
400

400:The scientist that coined the term cells.

  • Robert Hooke
400

400: Put these levels in order from simplest to most complex: organ, organism, tissue, cell, organ system.

  • Answer: What is cell, tissue, organ, organ system, organism?
400

400: On the Galapagos Islands there are similar finches with different beaks on each island.  This is an example of?

What is adaptation?

500

500: A plant cell loses water and its large vacuole shrinks. Explain how this may affect the cell’s support.

  • Answer: The cell may become less firm because the vacuole no longer presses as strongly against the cell wall.
500

500: A cell needs more energy to do its work. Which organelle might become more active, and why?

  • Answer: The mitochondrion, because it helps release usable energy from food.
500

Scientist that first viewed living cells from teeth gunk.

Antonie van Leeuwenhoek

500

500: Muscle cells form muscle tissue, which helps make the heart. Explain the organization from cells to the whole organism.

  • Answer: Muscle cells form tissue; tissues make the heart, an organ; the heart works within an organ system; organ systems make the organism.
500

500: A single-celled organism moves toward food. Name two characteristics of living things shown by this action.

  • Answer: It responds to a stimulus and obtains or uses resources for energy.