Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Feedback Inhibition

Feedback Inhibition

Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!

Feedback Loops

Feedback Loops

In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.

Proofreading

Proofreading

Synthesis of new DNA molecules starts when DNA polymerase links nucleotides together in a sequence that is complementary to the template DNA strand. DNA polymerase has a higher affinity for the correct base to ensure fidelity in DNA replication. The DNA polymerase furthermore proofreads during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.Errors during Replication Are Corrected by the DNA Polymerase EnzymeGenomic DNA is synthesized in...

Proofreading

Proofreading

Synthesis of new DNA molecules is carried out by the enzyme DNA polymerase, which adds nucleotides on the daughter strand complementary to the template DNA strand. DNA polymerase has a higher affinity to add the correct base and ensures fidelity during DNA replication. Furthermore, it exhibits proofreading activity during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.
Errors During Replication are Corrected by the DNA Polymerase Enzyme

Allergic Reactions

Allergic Reactions

Contact-dependent Signaling

Contact-dependent Signaling

Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
In animal cells, gap junctions are formed...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Factors Determining Consumer Acceptance of Biofortified Food: Case of Zinc-Fortified Wheat in Pakistan's Punjab Province.

Frontiers in nutrition·2021

Same author

Rising incidence of obesity in Saudi residents. A threatening challenge for the surgeons.

International journal of health sciences·2018

Same author

Comparison of the efficacy of standard bariatric surgical procedures on Saudi population using the bariatric analysis and reporting outcome system.

Saudi medical journal·2017

Same author

Parent's use of the Internet in the search for healthcare information and subsequent impact on the doctor-patient relationship.

Irish journal of medical science·2017

Same author

Non-melanoma skin cancer: United Kingdom National Multidisciplinary Guidelines.

The Journal of laryngology and otology·2016

Same author

What factors are important in smoking cessation and relapse in women from deprived communities? A qualitative study in Southeast England.

Public health·2016

Search research articles

Related Experiment Video

Updated: Jun 19, 2026

Light/dark Transition Test for Mice

Light/dark Transition Test for Mice

Published on: November 13, 2006

Authors' reply

Arshad M Malik¹, A A Laghari, K A Talpur

¹Department of Surgery, Liaquat University of Medical and Health Sciences, Jamshoro, Pakistan.

Journal of Minimal Access Surgery

|October 1, 2009

Summary

No abstract available in PubMed .

More Related Videos

Knee Arthrocentesis in Adults

Knee Arthrocentesis in Adults

Published on: February 25, 2022

Related Experiment Videos

Last Updated: Jun 19, 2026

Light/dark Transition Test for Mice

Light/dark Transition Test for Mice

Published on: November 13, 2006

Knee Arthrocentesis in Adults

Knee Arthrocentesis in Adults

Published on: February 25, 2022