Cells
What is the basic unit of life?
A cell
What system transports nutrients and oxygen to cells?
Circulatory System
What do plants need for photosynthesis?
Carbon Dioxide and Water
What organelle releases energy from food?
Mitochondria
Living or Nonliving: Snails, Red Blood Cells, Leaves
Living - they are made up of CELLS
O2 =
CO2 =
H2O =
O2 = Oxygen
CO2 = Carbon Dioxide
H2O = Water
What is the primary function of the digestive system?
Breaks food down into smaller molecules
What is produced during photosynthesis?
Glucose and Oxygen
What 2 important molecules are needed for cellular respiration to occur?
Glucose and Oxygen
True or False: Living things grow and multiply
True
True or False: A cell membrane allows some materials to pass through while keeping others out.
True
What happens in the circulatory system after the heart pumps?
Blood moves through vessels, Amino Acids and Glucose are delivered to cells, Carbon Dioxide is removed from cells
What type of cell would have the most mitochondria?
A muscle cell that needs a lot of energy or a fingernail cell that doesn't need a lot of energy
Muscle Cell
Which two systems deliver glucose and oxygen for cellular respiration?
Digestive and Circulatory
A drop of blood is made of _______ of cells.
Hundreds
Thousands
Millions
Billions
Millions
Name the part of the cell that controls what goes in/out.
Cell membrane
How do the respiratory and circulatory systems work together?
Lungs bring in oxygen → blood delivers it to cells
Identify the carbon based molecule that is formed when a sugar molecule is rearranged during cellular respiration
Carbon Dioxide
What gets released during cellular respiration?
Carbon dioxide, water, and energy
What happens when bacteria become resistant to antibiotics?
They survive and reproduce
What’s the difference between unicellular and multicellular organisms?
Unicellular = one cell does all life functions; multicellular = many specialized cells that perform all life functions (like humans)
Which 4 systems help you lift a book?
Nervous, Muscular, Circulatory, and Respiratory
Why do athletes need more mitochondria in muscle cells?
To produce more energy during movement
How does exercise affect heart and breathing rate?
They get faster to deliver oxygen to cells
How are people with anemia affected?
Anemia means you have less red blood cells to carry oxygen to your cells. If you have less oxygen in your cells, you will release less energy and be tired all the time