Cell Theory
What is the basic unit of structure and function in all living things?
Cells
Which organelle contains DNA and helps control the cell's activities?
Nucleus
Cellular Respiration occurs here
Mitochondria
What is the movement of particles from an area of higher concentration to lower concentration called?
Diffusion
What is the process plants use to make sugar using light energy?
Photosynthesis
According to cell theory, where do all new cells come from?
Pre-existing Cells
Which organelle releases usable energy from food during cellular respiration?
Mitochondrion
What is made in Cellular Respiration
ATP (Energy)
What is the diffusion of water across a selectively permeable membrane called?
Osmosis
Which gas do plants take in from the atmosphere during photosynthesis?
Carbon Dioxide
A student discovers a new organism made of only one cell. Does it still qualify as a living thing? Explain.
Yes. Living things can consist of just one cell.
Which organelle captures light energy to make sugar during photosynthesis?
Chloroplast
What are the reactants for cell resp?
Oxygen and Glucose
A drop of food coloring is placed in a glass of water. After several minutes, the color spreads throughout the glass. Explain why.
Particles move from high concentration to low concentration.
What are the two raw materials needed for photosynthesis?
Water, carbon dioxide
A scientist observes a cell dividing into two new cells. Which part of cell theory does this observation support?
Cells come from pre-existing cells.
A cell cannot control which substances enter or leave it. Which cell structure is most likely damaged?
Cell membrane
What are the products of Cell Resp?
CO2, H2O, ATP
Type of transport that requires energy
Active Transport
How does energy change forms during photosynthesis?
Radiant energy from the sun is converted to chemical energy in the glucose.
What are the three parts of the cell theory?
Cell theory states that organisms are made of cells, Cells come from Cells, cells are the smallest thing considered living
A plant cell's chloroplasts stop working, but its mitochondria are still functioning. Explain how this affects the cell's ability to get and use energy.
The cell will make food but not be able to break it down.
Humans have mitochondria but no chloroplasts. Why?
They eat and do not make their own food through photosynthesis.
What are the three types of passive transport
Diffusion
Osmosis
Facilitated Diffusion
A healthy plant is given plenty of sunlight and water and is placed in an environment with almost no carbon dioxide. Predict what will happen to its rate of photosynthesis and explain why.
Photosynthesis will decrease because carbon dioxide is required for it to occur.