This rigid structure surrounds the cell membrane and helps support a plant cell.
What is the cell wall?
100: This organelle contains DNA and directs many cell activities.
100: According to cell theory, all living things are made of these.
100: A group of similar cells working together forms this level.
100: Living things are made of one or more of these basic units.
200: These organelles capture light energy for photosynthesis.
200: This organelle releases usable energy from food during cellular respiration.
200: The invention of this lab tool helped scientists develop the cell theory.
200: Several tissues working together form this level.
200: Living things use energy to carry out this process.
300: This large storage sac can hold water and help support a plant cell.
300: This flexible boundary controls what enters and leaves an animal cell.
300: New cells come from this source, according to cell theory.
300: Organs that work together to perform major functions make up this level.
300: This life process allows organisms to produce offspring.
400: The process by which plants make their own food in the form of glucose?
400: These tiny structures build proteins by joining amino acids.
400:The scientist that coined the term cells.
400: Put these levels in order from simplest to most complex: organ, organism, tissue, cell, organ system.
400: On the Galapagos Islands there are similar finches with different beaks on each island. This is an example of?
What is adaptation?
500: A plant cell loses water and its large vacuole shrinks. Explain how this may affect the cell’s support.
500: A cell needs more energy to do its work. Which organelle might become more active, and why?
Scientist that first viewed living cells from teeth gunk.
Antonie van Leeuwenhoek
500: Muscle cells form muscle tissue, which helps make the heart. Explain the organization from cells to the whole organism.
500: A single-celled organism moves toward food. Name two characteristics of living things shown by this action.