Major Competitive Exams

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Q. Which structure in the neuron is responsible for transmitting electrical impulses? (2019)
  • A. Dendrites
  • B. Cell body
  • C. Axon
  • D. Synapse
Q. Which structure in the neuron is responsible for transmitting impulses away from the cell body? (2019)
  • A. Dendrite
  • B. Axon
  • C. Synapse
  • D. Node of Ranvier
Q. Which structure in the neuron is responsible for transmitting impulses to other neurons? (2019)
  • A. Dendrites
  • B. Cell body
  • C. Axon
  • D. Synapse
Q. Which structure in the plant regulates the opening and closing of stomata?
  • A. Guard cells
  • B. Xylem vessels
  • C. Phloem fibers
  • D. Mesophyll cells
Q. Which structure increases the surface area for absorption in the small intestine? (2022)
  • A. Villi
  • B. Microvilli
  • C. Plicae circulares
  • D. All of the above
Q. Which structure is found in plant cells but not in animal cells?
  • A. Cell membrane
  • B. Mitochondria
  • C. Chloroplasts
  • D. Ribosomes
Q. Which structure is involved in the synthesis of lipids? (2022)
  • A. Rough ER
  • B. Smooth ER
  • C. Golgi apparatus
  • D. Lysosome
Q. Which structure is responsible for controlling the activities of the cell? (2019)
  • A. Cell wall
  • B. Nucleus
  • C. Cytoplasm
  • D. Ribosome
Q. Which structure is responsible for controlling the entry and exit of substances in a cell? (2022)
  • A. Cell wall
  • B. Plasma membrane
  • C. Cytoplasm
  • D. Nucleus
Q. Which structure is responsible for maintaining the shape of plant cells? (2021)
  • A. Cell membrane
  • B. Cell wall
  • C. Cytoplasm
  • D. Chloroplast
Q. Which structure is responsible for packaging and modifying proteins? (2020)
  • A. Nucleus
  • B. Golgi apparatus
  • C. Lysosome
  • D. Vesicle
Q. Which structure is responsible for packaging and transporting proteins?
  • A. Lysosome
  • B. Golgi apparatus
  • C. Rough endoplasmic reticulum
  • D. Nucleus
Q. Which structure is responsible for photosynthesis in plant cells? (2021)
  • A. Mitochondria
  • B. Chloroplast
  • C. Ribosome
  • D. Vacuole
Q. Which structure is responsible for pollen production? (2020)
  • A. Ovary
  • B. Anther
  • C. Style
  • D. Stigma
Q. Which structure is responsible for the synthesis of ATP? (2022)
  • A. Chloroplast
  • B. Mitochondria
  • C. Nucleus
  • D. Golgi apparatus
Q. Which structure is responsible for the synthesis of lipids? (2021)
  • A. Smooth endoplasmic reticulum
  • B. Rough endoplasmic reticulum
  • C. Golgi apparatus
  • D. Mitochondria
Q. Which structure is responsible for the synthesis of ribosomal RNA? (2021)
  • A. Nucleus
  • B. Nucleolus
  • C. Ribosome
  • D. Endoplasmic reticulum
Q. Which structure is responsible for the transport of sperm? (2020)
  • A. Urethra
  • B. Vas deferens
  • C. Seminal vesicle
  • D. Prostate gland
Q. Which structure is selectively permeable and regulates the entry and exit of substances in a cell?
  • A. Cell wall
  • B. Plasma membrane
  • C. Nuclear membrane
  • D. Cytoplasm
Q. Which structure prevents the backflow of food from the stomach to the esophagus? (2020)
  • A. Pyloric sphincter
  • B. Cardiac sphincter
  • C. Ileocecal valve
  • D. Anal sphincter
Q. Which structure protects the developing seeds in a flowering plant? (2021)
  • A. Ovary
  • B. Anther
  • C. Filament
  • D. Pistil
Q. Which substituent has both +M and -I effects?
  • A. -OH
  • B. -NH2
  • C. -COOH
  • D. -NO2
Q. Which substituent is a strong +I and +M director?
  • A. -NO2
  • B. -OH
  • C. -CN
  • D. -COOH
Q. Which substituent is a strong +M director?
  • A. -CHO
  • B. -NO2
  • C. -OH
  • D. -Br
Q. Which system in the body is primarily responsible for fighting infections?
  • A. Nervous System
  • B. Digestive System
  • C. Immune System
  • D. Respiratory System
Q. Which system is responsible for the body's response to stress?
  • A. Nervous system
  • B. Endocrine system
  • C. Immune system
  • D. Both A and B
Q. Which system is responsible for the exchange of gases in the body? (2023)
  • A. Digestive system
  • B. Nervous system
  • C. Respiratory system
  • D. Circulatory system
Q. Which system is responsible for the production of hormones in the body?
  • A. Nervous system
  • B. Endocrine system
  • C. Circulatory system
  • D. Muscular system
Q. Which system is responsible for the production of hormones?
  • A. Nervous system
  • B. Endocrine system
  • C. Circulatory system
  • D. Muscular system
Q. Which tab in Word would you use to change the font style? (2023)
  • A. Home
  • B. Insert
  • C. Layout
  • D. Review
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