Cell Culture Overview
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Questions and Answers

What is the primary purpose of cell culture?

  • To cultivate cells and tissues outside of an organism in an artificial environment (correct)
  • To grow bacterial infections in laboratory settings
  • To study cells only through biochemical assays
  • To study the effects of drugs within the organism
  • Which term refers to the study of cells or tissues grown in an artificial environment?

  • Ex vivo
  • In vitro (correct)
  • Hyper vivo
  • In vivo
  • Who first successfully undertook cell culture?

  • Ross Harrison (correct)
  • Gregory Pincus
  • Louis Pasteur
  • Robert Hooke
  • What does the term 'confluent culture' refer to?

    <p>When cells reach around 80% of their maximum capacity</p> Signup and view all the answers

    What is a primary culture?

    <p>Cells removed and disaggregated directly from the tissue</p> Signup and view all the answers

    Which of the following is NOT an essential factor in creating a cell culture environment?

    <p>Presence of heavy metals</p> Signup and view all the answers

    What is the main concern when culturing cells in a laboratory setting?

    <p>Infection by bacteria or viruses</p> Signup and view all the answers

    How can cells be disaggregated from tissue?

    <p>By enzymatic or mechanical methods</p> Signup and view all the answers

    What happens to cells after multiple subcultures?

    <p>They lose their original tissue properties</p> Signup and view all the answers

    What occurs when a cell line reaches finite divisions?

    <p>Cells stop dividing further</p> Signup and view all the answers

    What is the difference between primary culture and subcultured cells?

    <p>Primary cultures consist of already disaggregated cells compared to subcultures</p> Signup and view all the answers

    What type of environment does body cell culture aim to replicate?

    <p>In-vivo conditions such as temperature and nutrition</p> Signup and view all the answers

    What can result from the use of enzymes in the disaggregation of cells?

    <p>Separates cells from tissue</p> Signup and view all the answers

    Study Notes

    Cell Culture

    • Cell culture is the process of cultivating cells and tissues outside the body in an artificial environment, often a petri dish, designed to replicate conditions found within the body.
    • Cell culture replicates in vivo (inside the body) conditions by providing an environment that includes temperature, nutrition, CO2 concentration, humidity, and oxygen concentration, and protects against invading microorganisms like bacteria and viruses.
    • Cell culture can be used to study cells and tissues in a controlled environment, allowing researchers to observe and manipulate cellular processes.

    Types of Cell Culture

    • Primary cultures: Cells are directly removed from a tissue.
    • Cell lines: Cells that have been derived from primary cultures and have been cultivated for an extended period, allowing for increased growth and proliferation.

    Methods of Cell Culture

    • Primary Cultures: Cells are isolated from an organ or tissue using enzymatic or mechanical methods.
    • Cell Lines: Cells are either derived from primary cultures or are established cell lines that are already in existence.

    Cell Culture Stages

    • Primary Culture: The initial stage where cells are isolated and cultured for the first time.
    • Confluent Culture: Occurs when the cells reach a certain density, typically 80% of the available space in the culture vessel, halting cell division.
    • Subculture: The process of transferring cells from a confluent culture to a new culture vessel to allow for continued growth and passage.
    • Secondary Cell Line: A cell line that has been derived from a primary culture and has undergone at least one subculture.
    • Finite Divisions: The limited number of times a primary cell line can be subcultured before ultimately reaching a point of no further cell division.
    • Immortalized Cell Lines: Cell lines derived from tumor cells or cells that have been genetically modified, enabling them to divide indefinitely.

    Applications of Cell Culture

    • Drug discovery and development.
    • Toxicology testing.
    • Tissue engineering.
    • Studying cellular function and disease mechanisms.

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    Description

    This quiz provides insights into the process of cell culture, including its significance and the various types of cultures such as primary cultures and cell lines. Explore the methods used in cell culture and how they replicate in vivo conditions to study cellular processes in a controlled environment.

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