Cell Structures and Functions Quiz
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Questions and Answers

Which organelle is responsible for producing and assembling ribosome components?

  • Nucleolus (correct)
  • Rough ER
  • Nucleus
  • Golgi complex

What structure aids in cell division by forming spindle fibers to separate chromosomes during mitosis?

  • Vesicle
  • Centriole (correct)
  • Cytoskeleton
  • Lysosome

Which component of the cell is responsible for holding organelles and is involved in many metabolic reactions?

  • Peroxisome
  • Cytosol (correct)
  • Cell membrane
  • Smooth ER

What is the primary function of the Golgi complex?

<p>Protein and lipid modification and transport (A)</p> Signup and view all the answers

Which organelle contains enzymes that break down waste materials and cellular debris?

<p>Lysosome (C)</p> Signup and view all the answers

What component of the cell contains the genetic material and controls the cell's activities?

<p>Nucleus (B)</p> Signup and view all the answers

Which structure contains enzymes to break down fatty acids and detoxifies chemicals?

<p>Peroxisome (C)</p> Signup and view all the answers

What part of the endoplasmic reticulum is involved in protein synthesis and has ribosomes attached to it?

<p>Rough ER (B)</p> Signup and view all the answers

Small structures that are the site of protein synthesis, floating in cytoplasm or attached to the ER, are called what?

<p>Ribosome (B)</p> Signup and view all the answers

Which of the following lacks ribosomes and is involved in lipid synthesis?

<p>Smooth ER (B)</p> Signup and view all the answers

What is the function of vesicles in the cell?

<p>Transport and storage (D)</p> Signup and view all the answers

Which statement is true about cells?

<p>The cell is the basic unit of life. (B)</p> Signup and view all the answers

What structure is a semi-permeable membrane that surrounds and protects the cell?

<p>Cell membrane (D)</p> Signup and view all the answers

Flashcards

Nucleus

The control center of the cell; contains DNA and regulates gene expression.

Peroxisome

Contains enzymes for breaking down fatty acids and amino acids, and detoxifies chemicals.

Rough ER

Has ribosomes attached, involved in protein synthesis and processing.

Ribosome

Site of protein synthesis; can be free-floating or attached to rough ER.

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Smooth ER

Lacks ribosomes and helps with lipid synthesis and detoxification.

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Vesicle

Membrane-bound sacs used for transporting and storing substances within the cell.

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Cell

The basic unit of life.

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Cell Membrane

The outer layer of a cell that controls what goes in and out, protecting the cell.

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Mitochondrion

The powerhouse of the cell, generating energy through cellular respiration.

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Nucleolus

A structure within the nucleus that makes ribosomes.

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Centriole

Organelle involved in cell division, forming spindle fibers.

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Cytosol

The jelly-like fluid inside a cell, where many reactions occur.

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Lysosome

Organelle containing digestive enzymes to break down waste.

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Study Notes

Cell Structures and Functions

  • Nucleus: Contains the cell's genetic material (DNA) and controls cell activities by regulating gene expression
  • Peroxisome: Contains enzymes that break down fatty acids, amino acids, and certain chemicals, producing hydrogen peroxide as a byproduct which gets converted to water.
  • Rough ER: Studded with ribosomes, involved in protein synthesis and processing
  • Ribosome: Small structures that produce proteins; found floating freely in the cytoplasm or attached to the endoplasmic reticulum.
  • Smooth ER: Lacks ribosomes, involved in lipid synthesis and detoxification processes
  • Vesicle: Small membrane-bound sacs that transport and store substances inside the cell; also aid in transporting materials to and from the cell surface
  • Cell: The basic unit of life
  • Cell membrane: A semi-permeable membrane that surrounds the cell. Provides protection, structure, and controls the movement of substances in and out of the cell.
  • Mitochondrion: Known as the powerhouse of the cell, generates most of the cell's ATP (energy) through cellular respiration
  • Nucleolus: Involved in producing and assembling ribosome components
  • Centriole: Involved in cell division; helps in the formation of spindle fibers that separate chromosomes during mitosis
  • Cytosol: The jelly-like fluid inside the cell that holds the organelles and is the site of many metabolic reactions
  • Cytoskeleton: A network of fibers that provides structural support for the cell, aids in cell movement, helps transport materials inside the cell.
  • Nuclear DNA: Contains the genetic blueprint for the organism, encoding instructions for protein synthesis and cell function.
  • Golgi complex: Modifies, sorts, and packages proteins and lipids for storage or transport out of the cell
  • Lysosome: Contains digestive enzymes that break down waste materials, cellular debris, and foreign invaders like bacteria.

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Related Documents

Grade 7 Science Quiz #2 PDF

Description

Test your knowledge on various cell structures and their functions. This quiz covers essential components such as the nucleus, endoplasmic reticulum, and ribosomes, among others. Understand how these parts contribute to the life of a cell.

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