### substance | inhibitor:

Aromatase inhibitor
* are substances which prevent the formation of the female hormone oestradiol.
* avoid the weight gain associated with progestins.
* work by lowering serum estradiol concentrations.

Cholinesterase inhibitor
* are the current mainstay of AD treatment.
* increase gastric acid secretion due to increased cholinergic activity.

Competitive inhibitor
* are common in nature
  - quite common in nature
* bind to the active site.
* binds to the same site as the substrate.
* compete for the same binding site as the enzyme substrate.
* have a wide range of pharmaceutical applications.

Corrosion inhibitor
* are used to minimize the corrosion of steel and steel bars in concrete.
* coat drain pipes with an invisible film which protects pipes.
* containing chromates and phosphates contribute to a plant's pollution load.
* do two things.
* help by reducing the aggressiveness of the environment.
* protect bearings, rings, and the valve train from acidic attack and pitting.
* provide protection and save time.

Moderator
* are inhibitors
  - mediators
  - part of nuclear reactors
* is an inhibitor

### substance | inhibitor | moderator:

Heavy water
* contains deuterium , an isotope of hydrogen having one neutron in the nucleus
  - rather than ordinary hydrogen as a constituent
* has high heat capacity.
* is an excellent moderator and thus permits the use of unenriched uranium as a fuel
  - chemical compounds
  - necessary to produce plutonium in a nuclear reactor
* is used as a neutron moderator and coolant for nuclear reactors
  - both as a moderator and coolant
  - in the nuclear industry to slow down neutrons
  - useful in some kinds of nuclear reactors called heavy water reactors
  - water with a deuterium atom instead of one of the hydrogen atoms
* reacts with uranium, thorium and structural metals.
* suitable and convenient moderator in nuclear reactors.

Mold inhibitor
* have no effect on mycotoxins already present in stored grain.
* prevent bread from becoming molded.

Neuraminidase inhibitor
* are a new class of antiviral drugs that inhibit influenza A and B viruses
  - analogues of sialic acid
* block release of influenza virus from infected cells.

Noncompetitive inhibitor
* Decreases the turnover number of the enzyme.
* act elsewhere.

Inoculant
* are available in several formulations
  - substances
* come in both dry and wettable forms.
* have a limited shelf life.
* provide the legume seeds with nitrogen-fixing bacteria.

### substance | inoculant:

Bacterial inoculant
* are easy to apply and safe to handle and use
  - probably the most common additives in the United States
* is specific for each legume species.

Inoculum
* is in close proximity to developing crop
  - present belowground in the form of infected roots
* is probably present at varying levels throughout the region
  - uniformly present, and genetic variation among isolates is considerable
* term for the pathogen propagules that initiate an epidemic.

Inorganic material
* Some inorganic materials conduct electricity.
* are non carbon based, like hydrochloric acid.

Inorganic substance
* Most inorganic substances use chemical energy
* Some inorganic substances dissolve metal
  - find in earth
* Some inorganic substances have chemical compositions
* Some inorganic substances have definite chemical compositions

Insulation material
* Some insulation materials are easier to work with than others
  - flammable and give off dense chemical smoke if burned
  - contain formalin and formaldehyde
* are critical in buildings designed for low energy use and good thermal comfort.
* have tiny pockets of trapped air.
* play a primary role in achieving high energy efficiencies in buildings.