Hello, readers. This is the concluding post on the topic I stopped in my previous post where I discussed about translocation and phloem.Today, I will start by explaining the mechanism of translocation

Greetings to the entire HiveSTEM community. Thanks for all the supports and motivations. It’s great to be back on Hive. In my last post, I explained vividly on how plants work talking about the life of

One substance that is not in short supply on this planet is salt. Two-thirds of the world is covered in salty water and there are vast deposits on land. This is a big problem because plants can’t grow

Greetings to all my readers. Thanks for the constant support and motivations. I will start today's post by explaining more on the learned responses such as habituation and conditioning. Afterwards, I will

Greetings to my ardent readers and to the entire steemstem community. This post is a sequel to my previous post on Senses and behaviour. In the final paragraph, I said there are two types of photoreceptor

The eyes are literally our window on the world. This most sensitive and intricate of sense organs has fascinated both scientists and poets for centuries. In this section, I will look at the basic structure

Talking about making fishing nets ‘visible’ to dolphins. Dolphins, porpoises and toothed whales make sense of their environment by producing a variety of squeaks, whistles and clicks at high frequencies

Robert Wadlow, the tallest man who ever lived, had a condition called gigantism; he probably had a tumour that produced large amounts of growth hormone. The growth plates in his long bones didn’t fuse

We usually think of hormones as complex chemicals that occur in the human body. But hormones control all sorts of processes in all sorts of organisms. The vital part that one hormone plays in the life

Greetings to my dear readers and the entire steemstem community. Thanks for the constant support, I really do appreciate.This post is a continuation from where I stopped in my last post on THE CHEMICALS

Anabolic steroids are synthetic compounds that are similar in structure to testosterone, the male sex hormone. They increase anabolic (building-up) reactions, which enhance muscle size. Athletes, notably

The term ‘reducing sugar’ reflects the fact that some certain sugars can reduce other chemicals. What this means is that the sugar can donate electrons to other substances. A standard test for this is

All new organisms come from other organisms – they don’t just arise spontaneously. So how did life first come about? Could it have developed from non-living chemicals? Some experiments, carried out in

Cloning is a difficult topic for anyone; it is not only complex biology, but it is also a tricky subject ethically, What you feel about cloning may not just depend on your knowledge of science – it may

Cystic fibrosis (CF) is a genetic disease that is due to one defective allele (I’ve explained this in details in some of my past posts). About one person in 25 carries the defective allele, but they also

The first recombinant DNA molecules were produced in the early 1970s when bacteria were made to copy foreign DNA along with their own, However, in 1983 an American called Cary Mulls cloned DNA without

In February 2002, the first cloned cat, a kitten called cc (the typists’ abbreviation for ‘carbon copy’) made her world press debut. Cute though she was, cc highlighted some of the technological and ethical

How many kingdoms are there?The answer to this question reveals a lot about the nature of science. There is no general agreement about how many kingdoms there are, and opinions keep changing. Many scientists

The process of evolution is generally slow, and it is no surprise that for centuries people thought that the living world was static. However, there are situations where you can see the process in action.

Many people tend to think that evolution is something that happened in the past and that the world of today is the finished product. But this is far from the truth: evolutionary forces are still at work