Human Digestive System and its Functions
Biology

Human Digestive System and its Functions

A human digestive system is a group of organs or parts of organs. The primary goal of the digestive system is to break down large food molecules into smaller ones. The human body easily absorbs these small molecules. We derive energy from the food we consume to carry out our daily activities. Also, the food we eat helps in the growth, repair, and maintenance of the body. Cells in the human body use biomolecules and enzymes and, therefore, run the respiratory chain. All these biomolecules and enzymes are derived from…

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Simple Uses of Biology in D
Biology

15 Simple Uses of Biology in Daily Life

Today we are going to discuss some examples of Biology in daily life where biology plays an important role. Biology is an absolutely fascinating field of science that has been the center of human focus for centuries. Complex biological concepts have intrigued humans since time immemorial. Despite the advances in science and technology, many biological phenomena still lack a rational explanation. The mysteries of the origin of life on earth and the emergence of man are yet to be unraveled. We exist because of biology. Whatever we do; Biology is…

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observation of starch granules of potato
Biology

Observation of Starch Granules in Biology Lab

The Observation of Starch Granules is a practical experiment for Class Eleven Biology 1st Part in Bangladesh Educational System (NCTB). Necessary Materials for observation of Starch Granules: A Big Round Potato Glass Petri Dish Compound Microscope Scalpel Glass Slide Experiment: First, the round potato should be divided into different parts with a scalpel. Then remove the liquid from the potato parts in a Petri dish and take a drop on a clean slide and observe it under the microscope. Observations: Round potatoes on the slide will show oval whitish granules…

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observation of ideal plant cells of onion
Biology

Observation of ideal plant cells from onion peel

Observation of ideal plant cells from onion peel is a biology practical experiment for Class Eleven (HSC-1st part). Necessary Materials for observation of ideal plant cells: i) Onion, ii) Scalpel, iii) Forceps, iv) Needle, v) Glass Slide, vi) Cover Slip, vii) Small Brush, viii) 5% Glycerine, ix) Water, and x) Microscope. The procedure of the Experiment: Cut the onion lengthwise with a scalpel into several pieces. Take a piece of onion and break it with finger pressure on the opposite side of the cut edge. This will cause the scales…

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Microscope and its uses in Bangladesh
Biology

Microscope and its Uses in Biology Lab

The word microscope comes from the Greece languages ‘Micro’ and ‘skopein’. The microscope is an instrument with the help of which small and micro-objects invisible or dimly visible with bare eyes are magnified and visualized. Here we will discuss the microscope and its uses in Biology Lab. The ability to make different parts of an object visible is called resolving power. The resolving power of the human eye is typically 0.1 mm. That is, we cannot see objects smaller than 0.1 mm with our bare eyes. There are different types…

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