About lipids

The term "lipid" comes from the Greek word lyptos (λύπτομαι), meaning "fat", which itself comes from luptes (λύπτης), meaning "oily". Fats and oils are the main dietary sources of lipids. Lipids have applications in the cosmetic and food industries as well, as well as in nanotechnology, where they are called lipids to distinguish them from the biological molecules. Lipids also form a significant part of living organisms such as plants and animals, particularly in their cell membranes.

Lipid is a scientific term for fatty substances. The terms “lipids” and the obsolete “fatty acid” are interchangeable in common usage.

Lipids are organic molecules, this means that they contain carbon and hydrogen. They are insoluble in water but soluble in solvents like alcohol and ether. Their hydrophobicity is generally higher than alcohols. Lipids are also amphiphilic which means they have both polar and non-polar parts to them.

Lipids (glycerolipids, sphingolipids and fatty acids) are not mentioned much in the biochemistry courses but they are essential components of the biological membranes. Here I will try to elaborate on their structural and chemical properties as well as how classification is performed and what else can you say about these compounds.

Lipids are a group of natural organic compounds that include fats, waxes, sterols, fat soluble vitamins (like A, D, E and K), monoglycerides and diglycerides. Lipids can be broadly defined as hydrophobic or water-insoluble molecules that are found in biological membranes. Lipids can also be used for energy storage for example in the form of lipoprotein complexes found in cell membranes.

Lipids are one of the five top level groups of biomolecules. Lipids are technically a subgroup of fatty acids and alcohols. Basically, lipids are defined as hydrophobic or amphiphilic biological molecules. When you think of lipids, fats and oils come to mind. The remaining group is aqueous (water soluble) organic compounds that do not dissolve well in water.

Lipids are organic compounds, both natural and artificial that are either waxy or oily. It is an important class of substances, often referred to as the fats, waxes or phospholipids.

Lipids are water-insoluble organic macromolecules used mainly as cell structural components or as precursors for the synthesis of bioactive compounds. They consist of fatty acid molecules joined to glycerol by ester linkages. In general, they are insoluble in water, but soluble in organic solvents. Lipids are rarely amongst the top 10 proteins produced in a given organism, since most organisms can synthesize all the lipids they need for their cell membranes and other functions

Lipids are the compounds that make up fats. Fats are esters of fatty acids and glycerol. Fats are insoluble in water while triglycerides are specifically soluble in fat.

Curiosity: Why do they clean the soaps?

Soaps have amphipathic behavior, that is, they have a hydrophilic or water-soluble end, and another that is hydrophobic, which rejects water and tends to bind to fat, which detach and remain floating in the aqueous medium, forming micelles. Micelles can contain fats inside them, so soap has a cleansing power.

If the water is hot or we rub the clothes, the action of the soap is greater, since the hydrophilic end acquires more power to remove the dirt. In hard water, with a large amount of calcium and magnesium, these salts react with the soap to form an insoluble precipitate and it is necessary to use a softener to achieve a more pleasant touch.

3.2.1.2. Chemical properties of fatty acids | Biology 2nd Baccalaureate (biologia-geologia.com)

Global warming

No matter how you look at it, global warming is something that should concern us all. Research tells us about its effects on earth and our ecosystem, but also reveals we can do something to stop it. In this article I'm going to tell you how global warming affects ice melting, from the scientific point of view.

The human race is slowly causing a warming of the surface temperature of our planet. This warming is effecting everything around us, including global ice melting.

When you think of global warming and rising temperature levels you may imagine the arctic or Antarctic. You're probably picturing polar bears (who wouldn't be sad when they see a poor polar bear trying to catch fish but failing). Fact is that these two regions are important in the discussion of global warming and ice melting. So then, why are we talking about global warming in relation to the south?

If you believe in global warming, then you must also be aware of global warming's impact on the ice. I personally dislike the cold weather and cannot wait for global warming to stop. That's why I want to discuss it using this post.

As global warming progresses, the amount of ice present on the Earth's surface decreases. Melting is one of the key elements in global warming and it can have adverse effects on our planet.

It's important to always be an environmental friendly person, but with global warming it's imperative. Global warming is related to the environment in that it's causing ice melts. I'll talk about how you can be a part of the movement and help.

Heat. Warming. Climate change. Global warming. Ice melting. Polar Bears and penguins are drowning; our forests are burning, and the world is dying! We have to save it, don't you agree?

We are living times that are crucial for the future of our planet: global warming is affecting the whole planet, and there's a reason why it's so important to be informed about this phenomenon.

Global warming is a controversial issue. Let's face it, there are two types of people in this world. People that believe and people that don't. The realistic side of me wants to take the entire globe and shake them until they stop their selfish ways, but the more realistic side of me realizes that the earth isn't going to hold onto everything forever (yeah I'm going all apocalyptic). That's why it's important for  those of us that recognize the fact that humans are damaging our planet with pollution, overpopulation and irresponsible living towards animals and green life need to get together, prove science, carry signs of protest and save our planet before we destroy it.

Have you ever asked yourself why global warming occurs? It's a fact that Earth is the hottest it has ever been in recorded history. According to the Environmental Protection Agency, " 97 percent of climate scientists agree Earth is warming and human activities are the cause." Climate change and global warming are two words that are used interchangeably. But what does each mean? Is there any relation between them?

In the past two years, we have seen two of the warmest months in history with October 2016 as the hottest October on record and December 2015 as the second hottest.

It's happening again. And it's not because of the sun this time either. It's happening because of the man-made pollution humans are causing in the air they breathe, which is getting thicker by the day. The result: global warming.

Importance of excursions and field trips for the subjects of Biology and Geology

The importance of excursions and field trips in Biology and Geology is beyond compare. These trips help students to gain confidence, learn disciplines and make friends. But are they actually worth the time and efforts? This article will guide you towards the right decision.

Several studies have shown the importance of field trips and excursions for the students of Biology, Geology, Chemistry and Physics. Students remember more of what they experienced with their five senses rather than by just reading it in books. Apart from that, these field trips also help them develop a better understanding of things which they read in books. Excursions are an eye-opener for students and also enhance their knowledge on numerous topics.

Excursions and field trips are a key aspect of learning in the sciences. Understanding the difference between them is vital when deciding which one to take part in.

People must learn to appreciate the beauty of our world. They must take the initiative to educate themselves and explore. For better understanding of subjects such as Biology and Geology, students must be encouraged to sign up for excursions.

Field trips and excursions are a wonderful way for students to learn about their new topics of study. Often field trips provide an opportunity for real life application of theories, which helps us remember the concepts taught in class. Which reminds me, I'm planning on going on a Geology field-trip this summer — it's going to be so much fun!

Field trips and excursions are always a great learning experience for students.

When students are at school, they tend to prefer the classes that don't require a lot of work from them. However, there are some educators out there who know how to make even the most boring class sound truly exciting. These educators tend to introduce field trips and excursions in these classes, in order to make their lessons more interesting and versatile.

It is said that when you have time to play you have no time for work. When the students or employees are on for a trip, they are out of school and workplaces respectively. They have to take leave from their respective schools and offices, get inside the bus and travel to some other part of the country or even the world. This field trips give them a chance to visit real life places, enjoy nature, go through some adventure sports, and more importantly makes them realize how they were wrong in their assumption. Furthermore, joining trips helps them contribute in their community through social works like cleaning trash etc.

If you're a grade school or high school student, you know just how fun field trips can be. When you're in school, I would bet that there is a good chance that you've taken at least one fun and educational field trip with your fellow students to a local park, zoo, museum, lake, river, mountain or other area of nature.

The physical world around us has been a great source of fascination and inspiration to mankind ever since they first gazed upon the vast skies above them, or marveled at how strange and wonderful are the many creatures that inhabit our planet. Great advances in science, technology and civilization have been brought about through continual study and research about the world's environment, climate, flora and fauna.

Lifelong learning is a requirement of many jobs and careers. Thanks to vacations and business trips, you have the opportunity to learn new things in a different environment than your classroom. But, having the time to go on trips is not enough. You need a plan.

Field trips and excursions are important tools for teachers, especially in the subjects of Biology and Geology. A field trip can be fun for students as it offers them to learn about different places and things. Teachers have to remember that teenagers don't like to stay in school for a long time so a field trip is always a great way to get their attention back by introducing new topics and new information.

It is essential for students to take excursions and field trips, otherwise the degree of their understanding will be superficial. Exercises that students do in the classroom are not enough to learn the subjects fully. 

Excursions and field trips are an essential part of the education. This is because they provide students with the perfect opportunity to see real-world situations and conditions.

Every student of Biology and Geology has attended field trips. Given that it's absolutely necessary for the students to get a firsthand experience of hands-on learning, how can field trips help in achieving this?

Field trips are an often overlooked — but still very important — aspect of learning. A lot of students, as well as teachers, believe that engaging and fun field trips will have a lower impact on grades than regular classroom work. As we can see in the review of literature student grades are strongly influenced by field trips and excursions. Such activities change the perception and approach to the learning process. To learn more about this important topic please read on.

There are so many things you can learn on an excursion. Of course, you go to make the most of it by visiting museums and monuments, but don't forget to take a close look at nature – that's the best place to start if you want to be a biologist one day.