Biology Paper 1 Cell Biology B1 Flashcards
What is the basic unit of life?
The cell
True or False: All living organisms are made up of cells.
True
What structure controls the entry and exit of substances in a cell?
The cell membrane
Fill in the blank: The __________ is the control center of the cell.
nucleus
What is the function of ribosomes?
Protein synthesis
Which organelle is responsible for energy production?
Mitochondria
True or False: Plant cells have chloroplasts.
True
What is the function of the cell wall?
To provide structure and support to the cell
What is the jelly-like substance inside a cell called?
Cytoplasm
Which type of cell lacks a nucleus?
Prokaryotic cell
What is the primary function of the endoplasmic reticulum?
Protein and lipid synthesis
Fill in the blank: The __________ is involved in processing and packaging proteins.
Golgi apparatus
What is the role of lysosomes?
Digestion and waste removal
True or False: All cells have the same structure and function.
False
What are the two main types of cells?
Prokaryotic and eukaryotic
Which organelle is responsible for photosynthesis in plant cells?
Chloroplasts
What is the function of the vacuole in plant cells?
Storage of substances and maintaining turgor pressure
Multiple choice: Which of the following is NOT found in animal cells? A) Cell wall B) Mitochondria C) Nucleus
A) Cell wall
What is diffusion?
The movement of particles from an area of high concentration to an area of low concentration.
True or False: Osmosis is the diffusion of water.
True
What is active transport?
The movement of molecules against a concentration gradient, requiring energy.
Fill in the blank: The __________ function to transport substances within the cell.
vesicles
What is the role of the cytoskeleton?
To provide structural support and shape to the cell.
Multiple choice: Which organelle is involved in detoxification? A) Ribosome B) Smooth endoplasmic reticulum C) Golgi apparatus
B) Smooth endoplasmic reticulum
What is the primary role of the plasma membrane?
To regulate the movement of substances in and out of the cell.
What is the difference between plant and animal cells?
Plant cells have a cell wall, chloroplasts, and a large central vacuole; animal cells do not.
True or False: Mitochondria are known as the powerhouse of the cell.
True
What are stem cells?
Undifferentiated cells that can develop into different cell types.
Fill in the blank: Cells that have specialized functions are called __________ cells.
differentiated
What is the function of the nucleolus?
To produce ribosomes.
Multiple choice: Which of the following is responsible for protein modification? A) Ribosomes B) Golgi apparatus C) Mitochondria
B) Golgi apparatus
What is the role of chlorophyll?
To absorb light energy for photosynthesis.
True or False: Cell division occurs only in prokaryotic cells.
False
What is the process of cell division in eukaryotic cells called?
Mitosis
