Topics in BiologyFood web explained with examples Biology Scheme of Work, SS1, First Term Biology Scheme of Work, SS1, 2nd Term Biology Scheme of Work, SS1, 3rd Term Seminal Vesicles and Bulbourethral Glands as Male Accessory Sex Organs Male Reproductive System: Scrotum and its contents Brain: 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?
Academic Questions in Biology
The above diagram shows a _____.
A. Food Chain
B. Food Web
C. Food Flow
D. Food Energy
E. Food Pyramid
F. Food Hierarchy
Anything that elicits a physiological response from an organism is termed _____.
F. Action potential
Which of the following molecule is utilized directly as energy in the human body?
D. Adenosine Mono Phosphate
E. Adenosine Di Phosphate
F. Adenosine Tri Phosphate
Which of the following is not a basic characteristics of life?
The final organisms in a food chain are best referred to as _____.
E. Tertiary consumers
F. Quatenary consumers
Which of the following is a category of long bones?
The end product of photosynthesis is _____.
The above diagram illustrates a _____.
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Arteries are one of the vessels that conveys blood in the human body; the others been the veins and capillaries.
Think of a vessel like a pipe, but in their case, they carry blood.
Internal bleeding will occur whenever the vessels located deep within our body are broken (especially deep arteries and veins).
All artery carry blood away from the heart.
Also, Arteries carry oxygen-rich (oxygenated) blood from the heart to all the body tissues; with the exception of one; the pulmonary artery which carry deoxygenated blood from the heart to the lungs.
An artery is composed of three layers:
The outermost layer called the tunica adventitia or tunica external. It consist mainly of collagen fibres and connective tissue that anchors the arteries to other nearby tissues.
The middle layer called the tunica media. It is made up of smooth muscles and elastic fibres that supports the artery in conveying blood at high pressures.
The inner layer called the tunica intima or tunica internal. It is lined by a smooth tissue called endothelium and is made up of a fine network of connective tissues; and another layer of elastic fibres bound together by a membrane which has many pores or openings.
Note: The largest artery in the human body is called the aorta.
Problems with arteries and veins are often referred to as vascular disorders.
Vascular disorders are worsened in people with diabetes, renal failure, high blood pressure, smokers and alcoholics.
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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.
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.
Note: Plants are the only orgnisms that take away CO2 from the atmosphere