#1
What is the basic unit of life in all living organisms?
Cell
ExplanationCell: Fundamental unit of life, containing genetic material and performing essential functions.
#2
Which organelle is responsible for producing energy in a cell?
Mitochondria
ExplanationMitochondria: Powerhouse of the cell, generating energy through cellular respiration.
#3
What is the function of the cell membrane?
Regulate passage of substances
ExplanationCell Membrane: Controls the movement of substances in and out of the cell, maintaining internal environment.
#4
Which type of tissue provides support and structure to the body?
Connective tissue
ExplanationConnective Tissue: Supports, binds, and protects organs and other tissues.
#5
Which cellular structure is responsible for synthesizing proteins?
Ribosome
ExplanationRibosome: Molecular machinery for protein synthesis, translating genetic information into proteins.
#6
What is the primary function of the smooth endoplasmic reticulum?
Lipid synthesis
ExplanationSmooth ER: Synthesizes lipids and detoxifies drugs and poisons.
#7
What is the function of the Golgi apparatus in a cell?
Modification and packaging of proteins
ExplanationGolgi Apparatus: Modifies, sorts, and packages proteins for secretion or transport within the cell.
#8
What is the main function of the chloroplast in plant cells?
Photosynthesis
ExplanationChloroplast: Site of photosynthesis, converting light energy into chemical energy.
#9
Which type of cell division results in the formation of gametes (sperm and egg cells)?
Meiosis
ExplanationMeiosis: Cell division producing gametes with half the chromosome number for sexual reproduction.
#10
What is the role of cilia and flagella in cells?
Cell movement
ExplanationCilia & Flagella: Appendages for cell movement, sensory functions, and moving substances.
#11
In which cellular structure does transcription occur?
Nucleus
ExplanationNucleus: Contains genetic material and orchestrates cellular activities, including transcription.
#12
What is the main function of peroxisomes in a cell?
Detoxification
ExplanationPeroxisomes: Break down toxic substances and generate hydrogen peroxide, involved in detoxification.