End of year Science (Chemistry, Biology and physics) Flashcards
(23 cards)
What is the basic unit of life?
Cell
True or False: All living organisms are made up of cells.
True
What structure controls the movement of substances in and out of a cell?
Cell membrane
Fill in the blank: The jelly-like substance inside a cell is called __________.
Cytoplasm
What organelle is known as the powerhouse of the cell?
Mitochondria
Which organelle is responsible for photosynthesis in plant cells?
Chloroplast
What is the function of the nucleus?
It contains the cell’s genetic material and controls its activities.
Fill in the blank: The rigid outer layer of a plant cell is called the __________.
Cell wall
What is the function of ribosomes?
They create proteins.
What is a common feature of all cells?
They all have a cell membrane.
Fill in the blank: The genetic material of a cell is composed of __________.
DNA
What type of cell contains chloroplasts?
Plant cell
What is the primary function of the cell membrane?
To regulate the movement of substances in and out of the cell.
True or False: Animal cells have a cell wall.
False
What is the function of the vacuole in plant cells?
To store nutrients and waste products.
What is the main difference between plant and animal cells?
Plant cells have a cell wall and chloroplasts, while animal cells do not.
What is the function of the plasma membrane?
To protect the cell and control what enters and exits.
Which organelle is known for detoxifying harmful substances?
Smooth endoplasmic reticulum
True or False: Cells can only divide by a process called mitosis.
False
True or False: All cells have the same structure.
False
What is the main function of the nucleolus?
To produce ribosomes.
What is the function of the cell wall in plant cells?
To provide structural support and protection.
True or False: All cells can perform photosynthesis.
False
