Biology · Science General
Cell Biology and Structure
3,062 Questions
Cell biology focuses on the structure and function of cellular organelles. Key topics include cellular respiration, DNA inheritance, and energy production. These fundamental biology concepts are crucial for medical entrance and state service examinations.
Cell organelles functionsCellular respiration sitesDNA and ribosomesAnimal cell structurePlant cell components
Cell Biology and Structure Questions
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Leucoplast
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Chromoplast
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Proplastids
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Lysosomes
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Mitochondria
C
Correct answer
Explanation
Plastids develop from colourless precursors called proplastids. So, this answer is right.
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Betz cells
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Basket cells
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Purkinje cells
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Lugaro cells
C
Correct answer
Explanation
Niemann-Pick disease type C involves the progressive loss of Purkinje cells. In this disease, sphingomyelin accumulates in lysosomes in the cells.
A
Correct answer
Explanation
The glial/neuron ratio in the cerebral cortex is 3.72 (60.84 billion glia : 16.34 billion neurons).
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Endoplasmic reticulum
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Spindle fibers
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Microfilament complex
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Cytoplasmic membrane
C
Correct answer
Explanation
Phytoplasma antigenic protein has been shown to interact with insect microfilament complexes. It is believed to be the determining factor in insect-phytoplasma interaction.
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1 and 2
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1 and 4
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2 and 3
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2 and 4
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3 and 4
B
Correct answer
Explanation
Apoptosis is the process of programmed cell death that may occur in multicellular organisms where biochemical events lead to characteristic changes in morphology of cell and death. These changes include blebbing, cell shrinkage, nuclear fragmentation, chromatin condensation and chromosomal DNA fragmentation.
Anoikis is a form of programmed cell death which is induced by anchorage-dependent cells detaching from the surrounding extracellular matrix.
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Cytoplasm
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Chromosome
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Cell membrane
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Mitochondria
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Large vacuole
B
Correct answer
Explanation
Chromosomes carry genes and transmit the characteristics of parents to the offsprings.
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Vacuole
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Mitochondria
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Cell wall
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Nucleus
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Cell membrane
B
Correct answer
Explanation
This is the correct option. Mitochondria provide energy for all the activities of a cell.
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Nucleus
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Mitochondria
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Vacuole
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Cytoplasm
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Cell membrane
A
Correct answer
Explanation
This is the correct option. Nucleus contains chromatin that forms chromosomes during cell division.
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Only a
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Only a and b
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Only b
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Only b and c
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Only c
C
Correct answer
Explanation
This is the correct option as this statement is false.
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Muscle cell
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White blood cell
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Red blood cell
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Nerve cell
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Epithelial cell
D
Correct answer
Explanation
This is the correct option. Nerve cell is long and branched and has thread-like projections.
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Only a and b
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Only b and d
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Only b and c
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Only a and c
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Only a and d
C
Correct answer
Explanation
This is the correct option. Vacuole and chloroplast are present only in a plant cell.
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Only a
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Only a and b
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Only b
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Only b and c
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Only c
B
Correct answer
Explanation
This is the correct option. White blood cells and nerve cells both have a nucleus.
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Only a and b
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Only b and c
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Only a and c
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Only a and d
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Only b and d
D
Correct answer
Explanation
This is the correct option. Only plant cells have a cell wall.
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Only a and b
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Only b and c
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Only a and c
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Only c and d
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Only a and d
D
Correct answer
Explanation
This is the correct option. Red blood cell and epithelial cell cannot change their shape.
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Only a
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Only a and b
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Only b
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Only b and c
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Only c
A
Correct answer
Explanation
This is the correct option as this statement is false.