Free Animal and Plant Cell MCQs with Answers
275 Animal and Plant Cell 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 and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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275 questions · page 13 of 14
- A. Controlling active transport
- B. Acting as a membrane blood receptor
- C. Helping cells join together
- D. Regulating the flexibility at the membrane
Explanation: Cholesterol helps to regulate membrane fluidity over the range of physiological temperatures.
Correct answer: Regulating the flexibility at the membrane- A. Protein channels
- B. Active transport
- C. Endocytosis
- D. Diffusion
- E. Facilitated diffusion
Explanation: Explanation for this question will be added soon.
Correct answer: Diffusion- A. Option A
- B. Option B
- C. Option C
- D. Option D
- E. Option E
Explanation: Explanation for this question will be added soon.
Correct answer: Option D- A. Sol
- B. Gel
- C. Colloidal
- D. True solution
Explanation: The peripheral parts of a cell are often like gel.
Correct answer: Gel- A. Glycoprotein
- B. Carrier protein
- C. Lipid
- D. Carbohydrates
Explanation: The fluidity of the plasma membrane is primarily controlled by the composition and arrangement of lipids, specifically phospholipids.
Correct answer: Lipid- A. Cellulose
- B. Cell
- C. Ribosomes
- D. Penicillin binding protein
Explanation: The cell wall is synthesized by cellulose which is a polymer of beta-glucose.
Correct answer: Cellulose- A. Wall pressure
- B. Internal pressure
- C. Vacuole
- D. Osmotic pressure
Explanation: "The membrane that bounds vacuole, is called tonoplast which contains a number of active transport systems that pump ions into the vacuole…
Correct answer: Vacuole- A. Cell wall
- B. Cell membrane
- C. Cytoplasm
- D. Nuclear membrane
Explanation: The plasma membrane of all cells represents the universal boundary between the cell and its surroundings.
Correct answer: Cell membrane- A. Vacuole
- B. Lysosome
- C. Nucleus
- D. Endoplasmic reticulum
Explanation: Nucleolus and nuclear membrane always disappear during mitosis and meiosis.
Correct answer: Nucleus- A. Semi-permeable
- B. Differentially permeable
- C. Permeable
- D. Not permeable
Explanation: The cell wall is dead and fully permeable. It cannot regulate the entry of solvent or solute molecules.
Correct answer: Permeable- A. Proteins are not fixed at their position
- B. Hydrophobic tail facing inward and hydrophilic head facing outward
- C. The two surfaces and halves are not identical
- D. Cholesterol molecules are only present inside
Explanation: The cell membrane is an asymmetric structure. That means that the two sides of the membrane are structurally and functionally different.
Correct answer: The two surfaces and halves are not identical- A. Lipid
- B. Comer
- C. Charge pores
- D. Carbohydrates
Explanation: Channel proteins, gated channel proteins, and carrier proteins are three types of transport proteins that are involved in facilitated…
Correct answer: Charge pores- A. Glycoprotein
- B. Carrier prolein
- C. Lipid
- D. Carbohydrate
Explanation: The amount of cholesterol in animal plasma membranes regulates the fluidity of the membrane and changes based on the temperature of the…
Correct answer: Lipid- A. Outer to primary cell wall
- B. In between two primary cell walls
- C. Between the primary cell wall and plasma membrane
- D. Inner to plasma membrane
Explanation: Secondary cell walls in plants are present between the primary cell wall and the plasma membrane
Correct answer: Between the primary cell wall and plasma membrane- A. Hydrophobic
- B. Hydrophilic
- C. Globular
- D. Fitamentous
Explanation: According to the fluid mosaic model of the cell membrane, the Hydrophobic zone is embedded inside
Correct answer: Hydrophobic- A. Lipids
- B. Corner Proteins
- C. Charged Pores.
- D. Carbohydrates
Explanation: Charged pores, also known as ion channels, are essential components of the cell membrane that facilitate the exchange of materials and…
Correct answer: Charged Pores.- A. Chloroplasts
- B. Chromoplasts
- C. Leucoplasts
- D. All of these options are correct
Explanation: Plastids are of three types: 1. "Leucoplasts" --- In Roots ----colourless.
Correct answer: Leucoplasts- A. 500X
- B. 250 000X
- C. 500 000X
- D. 100 000X
Explanation: Option B is correct since the typical ( scanning ) electron microscope magnification power is X 250000.
Correct answer: 250 000X259. According to the fluid mosaic model, the plasma membrane is composed of which of the following?:
- A. Phospholipids
- B. Extrinsic proteins
- C. Intrinsic proteins
- D. All of these
Explanation: Plasma membrane separates the internal and external environment of a cell.
Correct answer: All of these- A. Solid
- B. Semisolid
- C. Fluid
- D. Liquid
Explanation: The model suggests that phospholipids are able to diffuse in their layers and the proteins of the membrane appear to give a mosaic…
Correct answer: Semisolid