NEW
Font size
Worksheets2P 2exam Biology
Total questions: 50
Worksheet time: 50mins
Which structure is present in eukaryotic cells but not in prokaryotic cells?
Nucleus
Chloroplast
Plasmid
Mitochondrion
What is the main function of ribosomes in prokaryotic cells?
Producing energy
Synthesizing proteins
Storing nutrients
Replicating DNA
Which cellular structure allows the movement of a prokaryotic cell?
Vacuole
Flagella
Lysosomes
Nucleus
Which component of the prokaryotic cell is involved in DNA replication?
Ribosome
Plasmid
Circular DNA
Endoplasmic reticulum
Which component outside the prokaryotic cell provides protection and shape?
Nucleolus
Cell wall
Golgi apparatus
Vesicles
Which organelle is known as the "powerhouse" of the cell?
Endoplasmic reticulum
Lysosome
Mitochondrion
Golgi apparatus
In which organelle does photosynthesis take place in plant cells?
Chloroplasts
Mitochondria
Ribosomes
Nucleus
Which organelle is responsible for breaking down damaged or unwanted cellular materials?
Ribosome
Lysosome
Nucleus
Vacuole
What is the function of the rough endoplasmic reticulum?
Protein synthesis
Photolysis of water
Energy transport
Calcium storage
The cell membrane is composed mainly of:
Carbohydrates
Cholesterol
Phospholipids
Nucleic acids
Which characteristic of the cell membrane makes it a receiver of messages?
Phospholipid bilayer
Receptor proteins
Carbohydrate chains
Microtubules
Which type of molecule can cross the cell membrane by simple diffusion?
Sodium ions
Glucose
Oxygen
Proteins
Cholesterol in the cell membrane contributes to:
Protein uptake
Membrane stability and fluidity
Cell signaling
Lipid digestion
Water transport across the cell membrane is called:
Simple diffusion
Osmosis
Endocytosis
Exocytosis
Which type of transport requires energy in the form of ATP?
Facilitated diffusion
Osmosis
Active transport
Simple diffusion
Passive transport occurs when substances move:
Against their concentration gradient
Along their concentration gradient
Using proteins and ATP
Through vesicles
Endocytosis is a process by which:
Large molecules are exported from the cell
Small molecules cross the membrane
The cell absorbs large particles through vesicles
Ions are transported through the membrane
What is the main objective of cellular respiration?
Store glucose
Produce ATP
Store carbon dioxide
Synthesize proteins
Where does the Krebs cycle occur in the cell?
In the nucleus
In lysosomes
In the mitochondrial matrix
In the endoplasmic reticulum
Who is activated in the electron transport chain, which synthesizes ATP?
Glucose
ATP Synthase
Carbon dioxide
NADH
How many ATP molecules are produced in total by one glucose molecule during aerobic cellular respiration?
2
36-38
20
4
Glycolysis is a stage of cellular respiration that occurs in:
The cytoplasm
The mitochondrion
The nucleus
The cell membrane
In which organelle does photosynthesis occur?
Mitochondrion
Chloroplast
Golgi apparatus
Ribosome
What is the main product of the dark phase (Calvin Cycle) of photosynthesis?
Oxygen
Glucose
Water
Carbon dioxide
The oxygen produced during photosynthesis comes from:
Carbon dioxide
Water
Glucose
Molecular oxygen
In which part of the chloroplast does the light phase of photosynthesis occur?
Stroma
Thylakoids
Outer membrane
Nucleus
Which molecule captures light energy in photosynthesis?
ATP
NADPH
Chlorophyll
Glucose
Which process involves the movement of water across a selectively permeable membrane?
Diffusion
Osmosis
Filtration
Active transport
What is the primary role of mitochondria in eukaryotic cells?
Photosynthesis
Energy production
Protein synthesis
Cell division
Which type of cellular transport does not require energy?
Active transport
Facilitated diffusion
Endocytosis
Exocytosis
What is the role of the endoplasmic reticulum in a cell?
Energy production
Protein and lipid synthesis
Photosynthesis
Cellular respiration
Which compound forms the majority of the cell wall in gram-positive bacteria?
Collagen
Peptidoglycan
Lipids
Nucleic acids
Which of the following statements about prokaryotic cells is correct?
They are larger than eukaryotic cells
They have membrane-bound organelles
Their DNA is contained in a defined nucleus
They do not have a nucleus or membrane-bound organelles
Chloroplasts in plants are responsible for:
Protein production
Photosynthesis
Lipid transport
Nutrient breakdown
Which structure is shared by prokaryotic and eukaryotic cells?
Nucleus
Mitochondria
Ribosomes
Golgi apparatus
What characteristic distinguishes multicellular organisms from unicellular ones?
They are smaller
They lack a nucleus
They have specialized cells
They reproduce only by binary fission
In the eukaryotic cell, where is DNA located?
Ribosomes
Nucleus
Golgi apparatus
Chloroplasts
Which of the following is a function of the cytoskeleton?
Storing energy
Regulating the entry of nutrients
Maintaining cell shape
Transporting oxygen
Which part of phospholipids is hydrophilic?
The entire molecule is hydrophobic
The entire molecule is hydrophilic
Lipid tail
Phosphate head
What is a key difference between gram-positive and gram-negative bacteria?
Gram-positive organisms have an inner membrane
Gram-negative organisms have a thicker cell wall
Gram-positive organisms lack a cell wall
Gram-negative organisms have an additional outer membrane
Which of the following is a characteristic shared by all cells?
Having a nucleus
Having a cell wall
Having a cell membrane
Having mitochondria
What is the main difference between unicellular and multicellular organisms?
Unicellular organisms only have a cell membrane
Multicellular organisms have specialized tissues
Unicellular organisms have a nucleus
Multicellular organisms lack mitochondria
Which of the following structures is present only in plant cells?
Nucleus
Mitochondria
Cell wall
Plasma membrane
What function do ribosomes perform in cells?
Synthesize proteins
Produce energy
Store nutrients
Destroy toxins
In which organelle does cellular respiration take place in eukaryotic cells?
Chloroplast
Ribosome
Golgi apparatus
Mitochondrion
Which of the following is NOT a function of the cell membrane?
Regulate the passage of substances
Synthesize proteins
Protect the cell
Maintain internal balance
What is the role of the vacuole?
Produce energy
Store nutrients and water
Regulate the cell cycle
Synthesize proteins
Which organelle is responsible for protein modification and packaging in eukaryotic cells?
Ribosomes
Golgi apparatus
Smooth endoplasmic reticulum
Mitochondria
Which cell structure is responsible for regulating the exchange of substances between the inside and outside of the cell?
Cell wall
Cell membrane
Nucleus
Ribosomes
What is the primary function of lysosomes in a cell?
Energy production
Digestion of waste materials
Protein synthesis
Photosynthesis
