In this video we are going to look at a few different ways in which plant hormones can be used. Plant growth hormones (auxins) can be used as selective weedkillers. The selective weedkillers contain growth hormones, that cause the weeds to grow really quickly. This means the weed is absorbing nutr
Plants have developed responses called tropisms. A tropism is a growth in response to a stimulus; so light and water in the plant’s case. There are different types of tropisms: Positive tropisms are when growth is towards the stimulus - so the plant growing towards the light to maximise the stimul
A hormone is a chemical messenger that is secreted (or released) into our bloodstream by specific organs known as glands. Hormones regulate (or control) many processes in our body, including blood glucose levels, water content in blood, general growth, and blood pressure – just to name a few. They
Hormones are chemical messengers secreted by glands and have specific target organs. In this lesson, you will learn about hormones that stimulate changes to your body during puberty. Puberty is the timeframe when secondary sexual characteristics develop – in other words, when a boy matures physi
Hunger and body weight are affected by these three important hormones: leptin, insulin and ghrelin. Together, they play a key role in regulating our metabolism. Author: 3sat/nano, Telekult, Petra Cyrus, Thomas Henk Henkel+Knut Muhsik, Lena Hatebur) Translation and Dubbing: alugha Click here to
http://www.hoTodi.tv shows how it's done! Now that we are familiar with notes, the fretting hand and plucking hand, let's continue with some important basics. Today, we are going to learn what a root, a fifth and a concave is. is. We will play them on the strings and learn how to transpose them. H
Fluorescein is an amazing substance that when added to water or alcohol will become UV reactive and make some of the coolest effects you have ever seen. Which test is your favorite? *Hang with me* Facebook: http://facebook.com/HackThePlanet Twitter: http://twitter.com/householdhacker Serious Bus
Leptin is very important for the regulation of our body weight. If the fat cells are sufficiently filled, they send out leptin and thus signal that you are sated. Author: 3sat/nano, Telekult, Petra Cyrus, Thomas Henk Henkel+Knut Muhsik, Lena Hatebur), tricky GbR Translation and dubbing: alugha Cl
On the eastern edge of the region, parts of the North and South American plates slide under the Caribbean plate at a rate of about two centimeters per year. Even today, 16 volcanoes are still active over a long period of time. Author: ZDF/Terra X/R. Marel/S. Hillmann/C. Gerisch/A. Kindler/SpiegelTV
In this video excerpt from NOVA scienceNOW, learn about an area of the brain that is involved with both language processing and the creation of stone tools. Correspondent and New York Times technology columnist David Pogue explores how tool-making (an ancient human skill that requires complex, seque
Our advent calendar 2014 - 3. December 2014nnWith this advent video series we like to give you one of 24 facts about YouTube, videos, synchronisation and everything else.nnOur today’s topic is a the name and meaning of the word alugha. We will explain you where it is from and what it means :)nnHave
If a plant has enough water, minerals and energy it will grow right? Well sort of… but there is more to it - like why do plants bend towards the light and not just grow straight? And how come the stem grows up but the roots grow down? It isn’t as if a plant has eyes to tell it where the sun is. Pl
