What is the basic structural and functional unit of life?
A) Atom
B) Molecule
C) Cell
D) Tissue
Which organelle is responsible for energy production in the cell?
A) Nucleus
B) Mitochondria
C) Ribosome
D) Lysosome
Which structure controls the movement of substances in and out of the cell?
A) Cytoplasm
B) Cell membrane
C) Nucleus
D) Golgi apparatus
Which organelle is known as the “brain” of the cell?
A) Mitochondria
B) Endoplasmic reticulum
C) Nucleus
D) Ribosome
Which of the following is found only in plant cells?
A) Lysosomes
B) Chloroplasts
C) Ribosomes
D) Golgi apparatus
Which of these structures provides shape and support to plant cells?
A) Nucleus
B) Mitochondria
C) Cell wall
D) Centrioles
Which organelle is responsible for protein synthesis?
A) Ribosomes
B) Golgi apparatus
C) Lysosomes
D) Vacuole
What is the function of the lysosomes in a cell?
A) Transporting materials
B) Producing energy
C) Digesting waste
D) Storing genetic information
Which organelle is responsible for packaging and transporting proteins?
A) Golgi apparatus
B) Ribosomes
C) Nucleolus
D) Cytoplasm
Which part of the cell contains genetic material?
A) Golgi body
B) Mitochondria
C) Nucleus
D) Endoplasmic reticulum
Which of the following is a semi-permeable membrane?
A) Cell wall
B) Nucleus
C) Plasma membrane
D) Cytoplasm
Which organelle helps in cell division in animal cells?
A) Ribosome
B) Centriole
C) Lysosome
D) Chloroplast
What is the jelly-like substance that fills the cell?
A) Nucleoplasm
B) Cytoplasm
C) Plasma membrane
D) Lysosome
Which of the following is a function of the smooth endoplasmic reticulum?
A) Protein synthesis
B) Lipid synthesis
C) DNA replication
D) ATP production
Which organelle helps in the synthesis of ribosomes?
A) Mitochondria
B) Golgi apparatus
C) Nucleolus
D) Lysosomes
Which of the following is present in both prokaryotic and eukaryotic cells?
A) Nucleus
B) Mitochondria
C) Ribosomes
D) Golgi apparatus
What is the function of vacuoles in plant cells?
A) Storing food, water, and waste
B) Producing proteins
C) Conducting photosynthesis
D) Transporting oxygen
Which structure connects the nucleus to the cytoplasm?
A) Endoplasmic reticulum
B) Golgi apparatus
C) Ribosomes
D) Lysosomes
What is the main function of peroxisomes?
A) Breaking down fatty acids
B) Storing proteins
C) DNA replication
D) Photosynthesis
Which component of the cytoskeleton provides mechanical support to the cell?
A) Microtubules
B) Ribosomes
C) Peroxisomes
D) Golgi apparatus
Which type of cells lack a nucleus?
A) Plant cells
B) Animal cells
C) Bacterial cells
D) Fungal cells
What is the function of the rough endoplasmic reticulum?
A) Protein synthesis
B) Lipid storage
C) Digestion
D) Cell division
What structure allows plant cells to carry out photosynthesis?
A) Mitochondria
B) Chloroplasts
C) Ribosomes
D) Endoplasmic reticulum
Which organelle plays a role in apoptosis (programmed cell death)?
A) Mitochondria
B) Golgi apparatus
C) Ribosome
D) Nucleus
Which macromolecule makes up the majority of the plasma membrane?
A) Carbohydrates
B) Proteins
C) Lipids
D) Nucleic acids
Which of the following structures do animal cells lack?
A) Cell wall
B) Mitochondria
C) Nucleus
D) Endoplasmic reticulum
What is the primary function of cilia and flagella?
A) Storing nutrients
B) Cell movement
C) Producing proteins
D) Conducting photosynthesis
Which of the following best describes prokaryotic cells?
A) They contain membrane-bound organelles
B) They lack a nucleus
C) They are multicellular
D) They have a complex structure
What is the function of chromatin in the nucleus?
A) Producing ATP
B) Storing genetic information
C) Breaking down waste
D) Transporting molecules
