BioTech
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (24 张)
What is biotechnology?
The application of science and technology to living organisms or substances to meet a want or need.
What is a cell culture?
A process where cells are grown outside their natural environment.
Name one use of cell cultures.
Studying bacteria growth and lifespan.
Name another use of cell cultures.
Developing vaccines or creating tissue/skin for burn victims.
What are mother cells?
The original cells that are grown in a cell culture.
What conditions must be reproduced in a cell culture?
Temperature pressure humidity and pH.
What nutrients are added in a cell culture?
Sugar and water.
What is the purpose of a vaccine?
To stimulate the immune system to produce antibodies.
What are antibodies?
Proteins produced by the immune system that protect against disease.
What are the two main types of vaccines?
Attenuated live vaccines and inactivated vaccines.
What is an attenuated vaccine?
A vaccine made from weakened living bacteria or viruses.
Why are attenuated vaccines effective?
They are still recognizable by the immune system.
Give an example of an attenuated vaccine.
MMR varicella or rotavirus.
What is an inactivated vaccine?
A vaccine made from killed bacteria or viruses.
How are inactivated vaccines produced?
Using chemicals heat or UV rays.
Give an example of an inactivated vaccine.
Tdap or Twinrix.
What is reproductive cloning?
Making a genetically identical copy of a living organism.
Are cloned offspring genetically identical?
Yes.
Why is human cloning illegal?
Because of ethical concerns.
Give one argument against cloning.
It reduces uniqueness or has high failure rates.
What problems have occurred with cloning?
Miscarriages stillbirths and severe abnormalities.
Give one argument in favor of cloning.
It could help infertile individuals or cure illnesses.
What is therapeutic cloning?
Using cloning to obtain stem cells.
What are stem cells?
Undifferentiated cells that can become specialized.