Chemistry & Biology Learning Center.

30/12/2025

That's it

29/12/2025

Name the organic compound below

27/12/2025

another one for Gaseous exchange....get a copy # # Whatsapp me on 0713010699

27/12/2025

summarized notes on RESPIRATION....all concepts covered in a short and precised format for easy understanding.... # # Whatsapp me on 0713010699...if you need a copy.

27/12/2025

To identify that a compound has covalent bonding; you check if the compound has a combination of elements from group(iv,v,vi,vi) in the periodic table....

21/12/2025

Big shout-out to my newest top fans! Brian Kimai

21/12/2025

An experiment to illustrate gaseous exchange in plants

20/12/2025

GASEOUS EXCHANGE IN ALVEOLI
a) There is higher concentration of oxygen in alveoli cavity than in blood in blood capillaries.
b) oxygen therefore diffuses across the thin wall of capillaries into the bloodstream where it combines with haemoglobin in red blood cells to form oxyhemoglobin which is transported to various parts of the body.
c) There is higher concentration of carbon dioxide in blood capillaries than in the alveoli cavity.
d) carbon dioxide diffuse across the thin membrane into alveoli cavity where is expelled during breathing out.

18/12/2025

1. Aim of experiment: To investigate process of anaerobic respiration.
2. observation made:
a) Rise in thermometer readings.
b) smell of ethanol
3. Account for the observation made:
a) glucose is broken down by the yeast to produce Ethanol, energy and carbon dioxide. The energy is in form of heat hence causes increased temperature inside the vacuum flask.
4. Role of the oil: to prevent entry of oxygen.
5. Control experiment: same experiment but using boiled solution of glucose and yeast.

03/01/2025

12/12/2024