SS1 first term biology past questions and answers
Here they are;
Question: What is the primary function of the nucleus in a cell?
a) Energy production
b) Storage of genetic material
c) Synthesis of proteins
d) Cellular respiration
Answer: b) Storage of genetic material
Question: Which organelle is responsible for the production of ATP in a eukaryotic cell?
a) Nucleus
b) Mitochondrion
c) Endoplasmic reticulum
d) Golgi apparatus
Answer: b) Mitochondrion
Question: What is the function of the ribosomes in a cell?
a) Lipid synthesis
b) Protein synthesis
c) Oxygen transport
d) Waste elimination
Answer: b) Protein synthesis
Question: Which of the following is a characteristic of prokaryotic cells?
a) Membrane-bound nucleus
b) Multiple chromosomes
c) Presence of ribosomes
d) Absence of a cell membrane
Answer: d) Absence of a membrane-bound nucleus
Question: In photosynthesis, where does the light-dependent reaction take place?
a) Stroma
b) Thylakoid membrane
c) Grana
d) Cytoplasm
Answer: b) Thylakoid membrane
Question: Which of the following is a function of the smooth endoplasmic reticulum?
a) Protein synthesis
b) Lipid synthesis and metabolism
c) Ribosome production
d) ATP synthesis
Answer: b) Lipid synthesis and metabolism
Question: What is the purpose of the Golgi apparatus in a cell?
a) Energy production
b) Synthesis of ribosomes
c) Modifying and packaging proteins
d) DNA replication
Answer: c) Modifying and packaging proteins
Question: Which molecule carries genetic information in cells?
a) RNA
b) ATP
c) DNA
d) Enzymes
Answer: c) DNA
Question: What is the role of chlorophyll in plant cells?
a) Cellular respiration
b) Photosynthesis
c) Lipid synthesis
d) Protein degradation
Answer: b) Photosynthesis
Question: In cellular respiration, where does the Krebs cycle occur?
a) Nucleus
b) Mitochondrial matrix
c) Cytoplasm
d) Endoplasmic reticulum
Answer: b) Mitochondrial matrix
Question: Which structure is responsible for maintaining cell shape and providing mechanical support?
a) Cytoskeleton
b) Endoplasmic reticulum
c) Lysosome
d) Centriole
Answer: a) Cytoskeleton
Question: What is the function of the vacuole in plant cells?
a) Storage of genetic material
b) Intracellular digestion
c) Storage of water and nutrients
d) Synthesis of ATP
Answer: c) Storage of water and nutrients
Question: Which of the following is a function of the cell membrane?
a) Energy production
b) Synthesis of ribosomes
c) Regulation of substances entering and leaving the cell
d) Detoxification
Answer: c) Regulation of substances entering and leaving the cell
Question: What is the primary function of the rough endoplasmic reticulum?
a) Lipid synthesis
b) Protein synthesis and processing
c) ATP synthesis
d) Waste elimination
Answer: b) Protein synthesis and processing
Question: Which process involves the movement of molecules from an area of high concentration to an area of low concentration?
a) Osmosis
b) Active transport
c) Facilitated diffusion
d) Diffusion
Answer: d) Diffusion
Question: What is the main function of the centrioles in animal cells?
a) Synthesis of ATP
b) Formation of the cell membrane
c) Cellular respiration
d) Facilitating cell division
Answer: d) Facilitating cell division
Question: Which of the following is a characteristic of eukaryotic cells?
a) Absence of membrane-bound organelles
b) Presence of a nucleus
c) Lack of a cell membrane
d) Unicellular structure
Answer: b) Presence of a nucleus
Question: What is the function of the lysosomes in a cell?
a) Synthesis of ATP
b) Intracellular digestion
c) Protein synthesis
d) Oxygen transport
Answer: b) Intracellular digestion
Question: Which type of cell division results in the formation of gametes?
a) Mitosis
b) Meiosis
c) Binary fission
d) Budding
Answer: b) Meiosis
Question: What is the primary function of the nucleolus in a cell?
a) Energy production
b) Synthesis of ribosomal RNA
c) Protein synthesis
d) Cellular respiration
Answer: b) Synthesis of ribosomal RNA
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