Biology revision

The relative ISOTOPIC mass is the mass of an element in relation to Carbon-12. The reason that this is the ISOTOPIC mass, is because some elements have different isotopic forms, for example Chlorine...

A Level Biology: Homeostasis 2 – Thermoregulation Hi! Welcome to the second video on Homeostasis. Today, we are going to be looking at Thermoregulation. But first, a quick recap. You should remember...

A Level Biology: Homeostasis 1 – Negative Feedback Hi! Welcome to the first of our videos about Homeostasis. Today, we are going to be looking primarily at how homeostasis works. First of all, when...

A Level Biology: Homeostasis 3 – Blood Sugar Hi! Welcome to the third of our videos on Homeostasis. Today, we are going to be looking at Blood sugar regulation. Glucose is a very important compound...

A Level Biology: Homeostasis 6 – Osmosis Hi! Welcome to today’s video. Today, we are going to be looking at Osmosis. Osmosis is just an example of diffusion and diffusion is the movement of molecules...

A Level Biology: Homeostasis 5 – ADH Hi! Welcome to the second part of this video presentation on Osmoregulation. Today, we are going to be looking at ADH. First of all, some brief points to remember...

A Level Biology: Homeostasis 4 – Kidneys Hi! Welcome to today’s video. Today, we are going to be looking at Osmoregulation, but we are going to split it up into two parts. The first part that we are...

Dr. Larry Brody: -- Human genetic variation and in fact I am sure most of you did it when you came in the room. You looked around and you said “Are there any relatives here? Anyone that is a threat?...

A Level Biology: Enzymes 3 Ð Factor Affecting Rate Hi! Welcome to my third video on the series about Enzymes. Today, we are going to be looking at rates of reaction and how different conditions are...

A Level Biology: Microorganisms and Health 6 – Antigenic Variation Hi! Welcome to my sixth video on the series about Microorganisms and Health. Today, we are going to be looking at Antigenic...