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 5 of 124
- A. bony fish
- B. sea fish
- C. cartilaginous fish
- D. none of these
Explanation: An operculum is a bony flap that covers and protects the gills of bony fish, helping direct water over the gill surfaces.
Correct answer: bony fish- A. simple
- B. advance
- C. complex
- D. highly complex
Explanation: Biological organization is described as highly complex because living systems are arranged in levels, from molecules and organelles…
Correct answer: highly complex- A. ferns
- B. bryophytes
- C. gymnosperms
- D. angiosperms
Explanation: Bryophytes lack true roots, stems, and leaves and instead possess rhizoids that mainly anchor the plant.
Correct answer: bryophytes- A. cuscuta
- B. rose
- C. ferns
- D. mosses
Explanation: Cuscuta, or dodder, is a parasitic plant that obtains water and nutrients from a host through specialized haustoria and has greatly…
Correct answer: cuscuta- A. DNA ad protein
- B. Protein and Lipids
- C. Protein and Chitin
- D. Protein and RNA
Explanation: The basic structure of most cell membranes is a phospholipid bilayer with proteins embedded in or attached to it.
Correct answer: Protein and Lipids- A. An organ
- B. An organism
- C. A Tissue
- D. A Cell
Explanation: A tissue is formed when similar cells are organized together to perform a common function, whether arranged in sheets or bundles.
Correct answer: A Tissue- A. They live in the same ecosystem.
- B. They are highly organized and complex made of one or more cells and contain genetic material
- C. They are acted upon by the same environment
- D. Both a and b
Explanation: Living organisms are cellular, highly organized, and contain genetic material that directs growth, maintenance, and reproduction.
Correct answer: They are highly organized and complex made of one or more cells and contain genetic material- A. Nucleus
- B. Mitochondria
- C. Cell
- D. DNA
Explanation: Robert Hooke examined a thin slice of cork in 1665 and observed many small box-like compartments, which he called cells.
Correct answer: Cell- A. Organ
- B. Tissues
- C. Organelle
- D. Organ System
Explanation: A tissue is a group of similar cells organized to perform a particular function, such as muscle tissue or epithelial tissue.
Correct answer: Tissues- A. Cells
- B. Organs
- C. Organ System
- D. Organelles
Explanation: Different tissues combine structurally and functionally to form an organ, such as the heart, stomach, or leaf.
Correct answer: Organs- A. Cells
- B. Tissues
- C. Organs
- D. Organ System
Explanation: The cell is the first level of biological organization regarded as living because it can carry out essential life processes.
Correct answer: Cells- A. Organelle
- B. Tissues
- C. Organic compound
- D. Inorganic compounds
Explanation: Blood is a connective tissue because it contains cells and a fluid extracellular matrix called plasma, and it transports materials…
Correct answer: Tissues- A. Leave
- B. Root
- C. Stem
- D. None of These
Explanation: Ginger is a rhizome, which is a modified underground stem containing nodes and buds that can produce new shoots.
Correct answer: Stem- A. Asian class
- B. English class
- C. American class
- D. None
Explanation: Feathered shanks, in which feathers extend down the legs, are a characteristic feature associated with the Asiatic or Asian class of…
Correct answer: Asian class- A. Gain Water
- B. Lose Water
- C. Exchange gas
- D. None of These
Explanation: Guard cells lose water, become flaccid and reduce the stomatal pore, causing the stoma to close.
Correct answer: Lose Water- A. Psilopsida
- B. Lycopsida
- C. Sphenopsida
- D. Pteropsida
Explanation: Lycopsida were the first vascular plant group to develop true leaves, called microphylls, which have a single unbranched vein.
Correct answer: Lycopsida- A. Mesophyll cells
- B. Xylem Cells
- C. Phloem Cells
- D. Guard Cells
Explanation: Guard cells are specialized bean-shaped cells that surround each stomatal pore and regulate gas exchange and water loss.
Correct answer: Guard Cells- A. Cell wall
- B. Cytoplasm
- C. Vacuoles
- D. Mitochondria
Explanation: A plant cell has a cellulose cell wall outside its plasma membrane, while an animal cell lacks a cell wall.
Correct answer: Cell wall- A. Cell Membrane
- B. Cell wall
- C. Cytoplasm
- D. Chromatin
Explanation: A cell wall is a rigid outer layer made mainly of cellulose and is characteristic of plant cells, whereas the cell membrane, cytoplasm and…
Correct answer: Cell wall- A. Parenchymatous
- B. Sclerenchymatous
- C. Chloroplast
- D. None of the above
Explanation: Interpreting “Febries” as “fibres,” plant fibres are sclerenchymatous cells with thick, lignified walls that provide strength.
Correct answer: Sclerenchymatous