Free Cell Structure and Function MCQs with Answers
2,478 Cell Structure and Function MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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Read the Cell Structure and Function notesFree MDCAT chapter notes with key terms2,478 questions · page 33 of 124
- A. Prophase
- B. Metaphase
- C. Anaphase
- D. Telophase
Explanation: Above diagram shows metaphase of meiosis
Correct answer: Metaphase- A. Tubulin, RNA
- B. Actin, RNA
- C. Myosin, RNA
- D. Tubulin, DNA
Explanation: Microtubules are composed of a protein tubulin and traces of RNA.
Correct answer: Tubulin, RNA- A. Telomere
- B. Kinetochore
- C. Primary constriction
- D. Secondary constriction
Explanation: The centromere has special area known as kinetochore which is formed a special protein.
Correct answer: Kinetochore- A. Prophase
- B. Telophase
- C. Anaphase
- D. Metaphase
Explanation: The most critical phase of mitosis is anaphase.It is the most critical phase of the mitosis, which ensures equal distribution of…
Correct answer: Anaphase- A. Prophase, Metaphase
- B. Anaphase, Telophase
- C. Metaphase, Anaphase
- D. Prophase, Telophase
Explanation: Reaching of the chromosomes at opposite poles terminates anaphase and start telophase.
Correct answer: Anaphase, Telophase- A. Crossing over
- B. Mitosis
- C. Meiosis
- D. Binary fission
Explanation: Regeneration, healing of wounds, and replacement of older cells are all the gifts of mitosis.
Correct answer: Mitosis- A. Chiasmata
- B. Recombination
- C. Crossing over
- D. Mutation
Explanation: The exchange of segments between non-sister chromatids of homologous chromosomes during meiosis is called crossing over.
Correct answer: Crossing over- A. Telomere
- B. Kinetochore
- C. Primary constriction
- D. Secondary constriction
Explanation: A disc-shaped protein structure within the centromere to which the spindle fibers attached during mitosis or meiosis called the…
Correct answer: Kinetochore- A. Monovalent
- B. Bivalent
- C. Tetravalent
- D. Pentavalent
Explanation: The first essential phenomenon of meiosis i.e. pairing of homologous chromosomes called synapsis starts.
Correct answer: Bivalent- A. Prophase I
- B. Metaphase I
- C. Anaphase I
- D. Telophase I
Explanation: The kinetochore fibers contract and the spindle or pole fibers elongate, which pull the individual chromosomes (each having two…
Correct answer: Anaphase I- A. Spore formation in plants
- B. Sex cell formation
- C. Healing of wounds
- D. Gametes formation in animals
Explanation: Some organisms, both plants and animals, undergo asexual reproduction. Regeneration, healing of wounds and replacement of older cells all…
Correct answer: Healing of wounds- A. Recombinant
- B. Synapsis starts
- C. Tetrad
- D. Bivalent
Explanation: The first essential phenomenon of meiosis i.e. pairing of homologous chromosomes called synapsis starts.
Correct answer: Synapsis starts- A. Kinetochore
- B. Both centromere and kinetochore
- C. Centromere, kinetochore and areas adjoining centromere
- D. Centromere
Explanation: In metaphase, chromosomes consisting of two sister chromatids get arranged at the equator.
Correct answer: Kinetochore- A. Metaphase -centromeres split and chromatids separate
- B. Metaphase - Chromosomes moved to spindle equator
- C. Anaphase - Centromeres split and chromatids separate and start moving away
- D. Telophase - Chromosomes move to spindle equator
Explanation: OptionB shows correct characteristics of above diagram
Correct answer: Metaphase - Chromosomes moved to spindle equator- A. Prophase I during meiosis
- B. Prophase II during meiosis
- C. Prophase of mitosis
- D. Telophase of mitosis
Explanation: The given figure shows crossing over i.e., exchange of segments between two homologous chromosomes.
Correct answer: Prophase I during meiosis- A. Primary constrictions
- B. Secondary constrictions
- C. Kinetochores
- D. Centromeres
Explanation: The key feature of metaphase is the attachment of spindle fibers to kinetochores of chromosomes.
Correct answer: Kinetochores- A. Chromocentre
- B. Chromomere
- C. Kinetochore
- D. Centriole
Explanation: The spindle is a microtubular apparatus that appears in many eukaryotic cells at the beginning of nuclear division and is responsible for…
Correct answer: Kinetochore- A. Muscle contraction
- B. Membrane architecture
- C. Cell division
- D. DNA recognition
Explanation: Microtubules are unbranched hollow submicroscopic tubules of protein tubulin that develop on specific nucleating regions and can undergo…
Correct answer: Cell division- A. 28
- B. 32
- C. 7
- D. 14
Explanation: Mitosis is an equational division where after division each cell produces two daughter cells, therefore after 7 divisions one cell will…
Correct answer: 7- A. Bivalent forming
- B. Tetrad
- C. Synapsis
- D. Crossing over
Explanation: Crossing over is responsible for inducing variability. It involves an exchange of equal segments of non-sister chromatids belonging to two…
Correct answer: Crossing over