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.
Last updated
Read the Cell Structure and Function notesFree MDCAT chapter notes with key terms2,478 questions · page 77 of 124
- A. Cytoplasm, endoplasmic reticulum, Golgi apparatus
- B. Cytoplasm, lysosomes, endoplasmic reticulum,
- C. Lysosomes, nucleus Golgi apparatus
- D. Membrane cytoplasm, nucleus
Explanation: "The explanation for this question will be added soon!".
Correct answer: Cytoplasm, endoplasmic reticulum, Golgi apparatus- A. 5
- B. 4
- C. 6
- D. 2
Explanation: 2 represents golgi apparatus. The most important function of this apparatus is to modify the proteins and lipids by adding carbohydrates…
Correct answer: 2- A. Primary cell wall
- B. Secondary cell wall
- C. Middle lamella, if present
- D. Cell surface membrane
Explanation: The cell wall in plants and few algae consists of three important layers: 1) The primary cell wall is the outermost thin, flexible and…
Correct answer: Middle lamella, if present- A. Nucleolus
- B. Mitochondrion
- C. Centriole
- D. Golgi apparatus
Explanation: The correct answer is the Golgi apparatus. It is located near the nucleus and is characterized by its stack of flattened, membrane-bound…
Correct answer: Golgi apparatus- A. 4X
- B. 10X
- C. 40X
- D. 400X
Explanation: The total magnification of a microscope is the product of the magnifications of the eyepiece and the objective lens.
Correct answer: 4X- A. Galactose
- B. Glucose
- C. Phospholipid
- D. Carbohydrate
Explanation: Fluid mosaic model of the plasma membrane describes the arrangement of phospholipids in two layers, stabilized interiorly by the…
Correct answer: Phospholipid1527. Among followings which cellular organelle contains circular DNA similar to those found in bacteria?
- A. Ribosome
- B. Lysosome
- C. Chloroplast
- D. Nucleus
Explanation: Chloroplasts and mitochondria are unique among cellular organelles as they possess their own circular DNA, similar to bacterial DNA.
Correct answer: Chloroplast- A. Tetraploid
- B. Triploid
- C. Haploid
- D. Diploid
Explanation: Germ cells are products of meiosis, a process that reduces the chromosome number by half, resulting in haploid cells.
Correct answer: Haploid- A. Five subunits
- B. Four subunits
- C. Three subunits
- D. Two subunits
Explanation: Ribosomes are essential organelles in the process of protein synthesis, consisting of two subunits: the large subunit and the small…
Correct answer: Two subunits- A. Mitochondria
- B. Lysosome
- C. Nucleus
- D. Chloroplast
Explanation: The correct answer is Lysosome, as it is the only organelle among the options that is enclosed by a single membrane.
Correct answer: Lysosome- A. i, ii, iii, iv, v
- B. v, iv, iii, ii, i
- C. ii, iv, i, iii, v
- D. ii, v, iv, iii, i
Explanation: The correct sequence for the events in Tay-Sachs disease is: ii, v, iv, iii, i.
Correct answer: ii, v, iv, iii, i- A. i, ii, iii, iv, v
- B. i, iv, v, iii, ii
- C. v, iv, iii, ii, i
- D. ii, iii, iv, v, i
Explanation: Mutations (i) in the genes responsible for lysosomal enzymes result in their deficiency (iv).
Correct answer: i, iv, v, iii, ii- A. Phagocytosis
- B. Pinocytosis
- C. Endocytosis
- D. Exocytosis
Explanation: The correct answer is Pinocytosis. This process is specifically designed for the intake of extracellular fluid and dissolved solutes into…
Correct answer: Pinocytosis- A. ER
- B. SER
- C. RER
- D. RAZ
Explanation: Steroid hormones are synthesized in the smooth endoplasmic reticulum (SER), which is involved in lipid metabolism and detoxification…
Correct answer: SER- A. Nucleus
- B. Cell wall
- C. Cell membrane
- D. All of these
Explanation: The correct answer is the cell wall, which is a non-living component of the plant cell.
Correct answer: Cell wall- A. Cellulose
- B. Chitin
- C. Peptidoglycan
- D. Glycogen
Explanation: The cell wall of fungi is primarily composed of chitin, a strong and flexible polysaccharide that provides structural integrity.
Correct answer: Chitin- A. Cellulose, hemicellulose, pectin
- B. Cellulose, hemicellulose, lignin
- C. Cellulose only
- D. Magnesium and calcium salts and pectin
Explanation: The secondary cell wall is a structure found in many plant cells, providing additional strength and rigidity beyond the primary cell wall.
Correct answer: Cellulose, hemicellulose, lignin- A. Tonoplast
- B. Protoplast
- C. Symplast
- D. Epiblast
Explanation: A plant cell devoid of cell wall is called a protoplast. Protoplasts are employed in tissue culture protocols as explants.
Correct answer: Protoplast- A. Cell wall
- B. Cell membrane
- C. Vacuole
- D. Cytoskeleton
Explanation: The correct answer is Cell wall. The cell wall is a rigid structure that surrounds the cell membrane in plant cells, providing them with…
Correct answer: Cell wall- A. Lignin
- B. Cellulose
- C. All of them
- D. None of these
Explanation: Cellulose is the primary structural component of plant cell walls and is known for its hydrophilic properties, as it can form hydrogen…
Correct answer: Cellulose