Topics in BiologyBrain: Introduction to the Human Brain Forebrain: Lobes of the Cerebrum and their Functions Cerebellum: Parts and Functions of the Cerebellum Midbrain: Division and Functions of the Midbrain Negative Feedback Mechanism in Homeostasis Arterial Disorders: Characteristics and Causes of Arterial Disorders Types of Desert and their Characteristics Characteristics of Tropical Rainforest Swamp Forest: What are Swamp Forests? Characteristics of Swamp Forests Savanna: Savanna and Grassland explained Savanna - Types of Savanna Tropical Savanna and Temperate Savanna with their Characteristics Introduction to Biomes: What is a Biome? Importance of Swamp Forests Swamp Forests - Types of Swamp Forests Ecology - Ecological Concepts explained Biology: What is Biology? Are Viruses Living Organisms? Differences Between Bone and Cartilage Skeleton: Functions of the Human Skeleton
Academic Questions in Biology
Which of the following is a category of long bones?
The end product of photosynthesis is _____.
The above diagram illustrates a _____.
The living cells that makes up cartilages are called _____.
Which of the following statement is incorrect with regards to chitin?
Which of the following is NOT a function of the human skeleton?
Organisms that manufacture their own food through the help of sunlight or chemicals are best referred to as _____.
Organisms that begins a food chain and also manufacture their food through photosynthesis are best referred to as _____.
The term “skeletal materials” should not be confused with “types of skeleton”.
Think of a skeletal material as the kind of substance in which a skeleton is composed of.
The materials that make up the skeleton are different in animals. For instance, the skeleton of humans is composed of both cartilages and bones while that of a cockroach is composed of a material called chitin.
Note: Some fishes have their skeletal material composed entirely of cartilage.
The skeletal materials in animals can be put into 3. These are:
Chitin is a skeletal material found in insects and anthropods. Cockroaches and grasshoppers are examples of insects while shrimps and crabs are examples of anthropods.
Note: Exoskeleton is a type of skeleton.
The image below shows some insects in possession of Chitin (which is a component of an exoskeleton).
Chitin is NOT a living tissue and thus does not grow along with the organism. Functionally, it protects the soft internal tissues in organisms that possesses them.
In order for organisms (with chitin as skeletal material) to grow, they must shed or put off their chitin to the environment. After their growth, these organisms will regenerate a new chitin. This is why you may have probably seen the chitinous reminants of cockroaches in the corners of homes or inside a box of old clothes.
The process through which living organisms grow by shedding off their chitin is called moulting or ecdysis.
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Amazing facts in Biology
Male Seahorses actually give birth to their young ones, NOT the female
All babies are born with blue eyes
Research made at the University of Vienna suggested that yawning may play an essential role in cooling the brains
All voluntary and concious activity of right handed people are controlled from the left part or hemisphere of the brain
A snail can actually sleep for 3 years 😁
An adult human being is composed of about 60% water. In fact, a newly born baby is composed of about 80% of water. This will drop to 65% after a year and finally to about 60% as the child ages
Without saliva, food can never be enjoyed. Food becomes tasteless since saliva is needed to dissolve the chemicals present in food onto the tongue’s taste buds.
Saliva also contains an enzyme called salivary amylase or "ptyalin" which helps to digest cooked starch to maltose. Maltose is a double sugar or disaccharide. Please read on sugars here
NOTABLE POINTS IN Biology
For a thing to be considered Living, it must possess all the Basic Characteristics of Life. These include:
Irritability or Sensitivity
During strenuous exercises like sprinting or 🏃 running, your body may actually work in the shortage of oxygen. During this time, your body owes oxygen (called oxygen debt) and it must be replenished or repayed after the exercise is stopped. This is why you breathe excess of oxygen after you stopped the exercise.
This is the concept of anaerobic respiration
A food Chain is a diagram that shows the relationship between plants and animals within a habitat on the basis of how they rely on each other for food.
Note: Habitat is a place where an organism live. It is of three types:
The term Biology originated from two Greek words. They are:
Biology can therefore be defined is the study of life
Anything that has life is generally considered as a living organism (or organism) 🌱🐐🐓. All living organisms must be able to carry the following activities:
The above listed points are often regarded as the basic characteristics of life. You can memorize them using the acronym (MR. NIGER DAC).
The gas used in the manufacture of food by plants is Carbon dioxide or Carbon(IV)oxide or CO2.
Plants manufacture food through a process called photosynthesis. Please read on photosynthesis here
Note: Plants are the only orgnisms that take away CO2 from the atmosphere