Cell Basics
What is the smallest unit of life?
cell
Which organelle is known as the "powerhouse" of the cell?
Mitchondria
Which structure is found in BOTH plant and animal cells?
cell membrane, cytoplasm, nucleus, mitochondria
A cell has damaged chloroplasts. Which cell would be most directly affected?
Plant cell
What is the main purpose of a microscope?
To make very small objects easier to see
What is the main function of the cell membrane?
To control what enters and leaves the cell
What process do chloroplasts help plants carry out?
Photosynthesis
A scientist observes a cell with a cell wall and chloroplasts. What type of cell is it most likely?
Plant
A cell's mitochondria stop working properly. What would most likely happen?
The cell would have less usable energy.
A microscope has a 10× eyepiece and a 40× objective lens. What is the total magnification?
400
What is the cytoplasm?
The jelly-like material where many cell activities occur
What goes into mitochondria?
Oxygen and food
Which structure gives a plant cell extra support and shape?
Cell wall
A cell membrane develops large gaps. What is the most likely result?
The cell can no longer control what enters and leaves.
When making a scientific drawing of a specimen, which is most important?
A. Adding as many artistic details as possible
B. Making the drawing accurate and showing important structures clearly
C. Coloring the specimen realistically
D. Drawing what you think the specimen should look like
B
What is the main function of the nucleus?
To control cell activities and contain DNA
Which organelle captures sunlight to help a plant make food?
Chloroplast
Why do plant cells need chloroplasts?
To capture light energy for photosynthesis
Why does a cell need different organelles?
Each organelle has a different job.
A student observes a cell under a microscope and sees a nucleus, cell membrane, cytoplasm, and chloroplasts. What can the student conclude?
The cell is most likely a plant cell.
What does it mean that the cell membrane is selectively permeable?
The membrane controls what can enter and leave.
Which structure is found in plant cells but not animal cells?
Cell Wall and Chloroplast
A scientists observes that mitochondria appears dim. Why?
Does not produce enough energy, not enough food or oxygen
Which situation best shows organelles working together?
A. The nucleus stores DNA while the mitochondria provide energy for cell activities.
B. The cell wall produces energy while the nucleus stores water.
C. The vacuole controls DNA while the membrane makes food.
D. The chloroplast controls what enters the cell.
B
Which focus know raises and lowers the stage?
Coarse