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 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.

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!

Cohesion

Cohesion

Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...

Pole and System Stability

Pole and System Stability

The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...

Acid and Bases: Ka, pKa, and Relative Strengths

Acid and Bases: K_a, pK_a, and Relative Strengths

This lesson delves into a critical aspect of the relative strengths of acids and bases. The strength of an acid is evaluated by the acid dissociation into its conjugate base and a hydronium ion in water. The complete dissociation of a strong acid is confirmed with a very high concentration of hydronium ions. As a result, an incomplete dissociation process affirms a weak acid. Therefore, the equilibrium is in the forward direction for strong acids and backward for weak acids in these reactions.

Covalent Bonds

Covalent Bonds

You might also read

Related Articles

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

Sort by

Same author

Differences in treatment choices for localised prostate cancer diagnosed in private and public health services.

The Medical journal of Australia·2021

Same author

Differences in treatment choices for localised prostate cancer diagnosed in private and public health services.

The Medical journal of Australia·2020

Same author

PARP Inhibitors in Ovarian Cancer.

The New England journal of medicine·2020

Same author

Bevacizumab Moonshots: An Important Outcome From the Latest Ovarian Cancer Mission.

Journal of clinical oncology : official journal of the American Society of Clinical Oncology·2019

Same author

Distributions of manganese in diverse human cancers provide insights into tumour radioresistance.

Metallomics : integrated biometal science·2018

Same author

Editorial Comment.

Urology·2018

Same journal

Peptides: FDA appointed advisory committee criticised for conflicts of interest.

BMJ (Clinical research ed.)·2026

Same journal

Hantavirus outbreak linked to cruise ship is over, say officials.

BMJ (Clinical research ed.)·2026

Same journal

BMA recommends that 16 and 17 year olds get access to cross sex hormones.

BMJ (Clinical research ed.)·2026

Same journal

Andy Burnham could apply lessons from Manchester to create a healthier Britain with a stronger economy.

BMJ (Clinical research ed.)·2026

Same journal

Uganda confirms Marburg case as Ebola outbreak continues.

BMJ (Clinical research ed.)·2026

Same journal

Australia increases penalties for social media companies to enforce under 16s ban.

BMJ (Clinical research ed.)·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Mar 18, 2026

Biology of Microbial Communities - Interview

Biology of Microbial Communities - Interview

Published on: May 28, 2007

Authors' reply to Kole

Ian E Haines¹, Richard J Ablin², George L Gabor Miklos³

¹Melbourne Oncology Group, Cabrini Medical Centre, Malvern 3144, Australia AMREP Department of Medicine, Monash University, Australia.

BMJ (Clinical Research Ed.)

|July 14, 2016

Summary

No abstract available in PubMed .

More Related Videos

Using Coculture to Detect Chemically Mediated Interspecies Interactions

Using Coculture to Detect Chemically Mediated Interspecies Interactions

Published on: October 31, 2013

Author Spotlight: A Streamlined and Accessible Analysis Method to Quantify Optokinetic Reflex Tracking Responses

Author Spotlight: A Streamlined and Accessible Analysis Method to Quantify Optokinetic Reflex Tracking Responses

Published on: April 12, 2024

Related Experiment Videos

Last Updated: Mar 18, 2026

Biology of Microbial Communities - Interview

Biology of Microbial Communities - Interview

Published on: May 28, 2007

Using Coculture to Detect Chemically Mediated Interspecies Interactions

Using Coculture to Detect Chemically Mediated Interspecies Interactions

Published on: October 31, 2013

Author Spotlight: A Streamlined and Accessible Analysis Method to Quantify Optokinetic Reflex Tracking Responses

Author Spotlight: A Streamlined and Accessible Analysis Method to Quantify Optokinetic Reflex Tracking Responses

Published on: April 12, 2024