Topics in Biology
Hindbrain: Medulla Oblongata and its features Food 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 CharacteristicsAcademic Questions in Biology
Which of the following is NOT a part of the wrist bones (or carpal bones)?
The statements below are true concerning arteries except _____.
A. The arterial wall has 4 layers
B. Tunica Adventitia is the outermost layer of an artery
C. Aorta is the largest artery in the human body
D. Pulmunary artery conveys deoxygenated blood
E. Internal bleeding will occur when a deeply located artery is broken
F. Arterial vascular disorders are worsened in people with diabetes and renal failure
The following statements are true concerning blood vessels except _____.
A. They are comprised of arteries, veins and capillaries
B. Problems associated with blood vessels are called vascular disorders
C. All veins carry blood towards the heart
D. Capillaries are found at cellular level
E. Arteries usually divide to form arterioles
F. Arterioles give rise to capillaries
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 _____.
A. Response
B. Irritability
C. Adaptation
D. Competition
E. Stimulus
F. Action potential
Which of the following molecule is utilized directly as energy in the human body?
A. Glucose
B. Carbohydrate
C. Starch
D. Adenosine Mono Phosphate
E. Adenosine Di Phosphate
F. Adenosine Tri Phosphate
Which of the following is not a basic characteristics of life?
A. Locomotion
B. Competition
C. Adaptation
D. Irritability
E. Nutrition
F. Death
The final organisms in a food chain are best referred to as _____.
A. Saprophytes
B. Parasites
C. Commensals
D. Decomposers
E. Tertiary consumers
F. Quatenary consumers
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Food chain can be interlinked in a habitat, giving rise to food web. An understanding on the concept of food chain is vital towards comprehending a food web. This is true because a food web is simply a complicated food chain.
Recall that a food chain is a diagram that shows the feeding relationship between organisms (plants and animals) in a given habitat.
In order to properly explain what a food web really is, a diagram that shows its illustration is required. Below is a diagram that shows a food web.
Using the above diagram as a point of reference, notice that the feeding pattern is interlinked. In fact, it is this interlinking of food chain that gives rise to a food web.
Consider the explanations below (The diagram serves as our reference):
EXPLANATION 1:
The aformentioned observations are illustrated below:
Berries >> Grasshopper >> Frog >> Snake >> Titmouse >> Fox
This illustration (above) is just one of the various food chains shown in the diagram. In this case, it is commenced by the berries, (called producers in a food chain). You will also observe from the diagram that another food chain in the same habitat is commenced by the plantain (also a producer).
Please read on Autotrophic mode of Nutrition and Photosynthesis here
Note: The producers always commence a food chain while the decomposers ends it.
Notice that the food chain commenced by the berries were directly consumed by the grasshopper, greenfly, butterfly and titmouse; (generally referred to as primary consumers) as illustrated in explanation 2.
EXPLANATION 2:
Recall that the food chain in explanation 1 began with the berries which were consumed by the grasshopper (called primary consumers).
Notice that apart from the grasshopper feeding on berries, the greenfly, titmouse and butterfly also fed on the berries, thus initiating their respective food chain at the level of a primary consumer.
Once again, it's important to state that the interlinking of food chains will give rise to a food web. In this instance, the interlinking of the separate food chains initiated by the berries and plantains (at the level of the producers) gave rise to the food web as illustrated in the diagram. In addition, a separate food chain was also started (at the level of the primary consumer) by the butterfly, greenfly, grasshopper and titmouse respectively since they all fed on the berries.
The instance below shows the food chain initiated by the greenfly at the level of a primary consumer:
Berries >> Greenfly >> Ladybird >> Dragonfly >> Frog >> Snake >> Buzzard.
The above instance is another food chain although it has some links with the first food chain (in explanation 1).
Note: It is this linking of food chains that gives rise to a food web.
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EXPLANATION 3:
A food web shows multiple food chains or multiple feeding relationships or multiple feeding connections all linked together.
Note: Food web always consist of more than one food chain (at least, a minimum of 2 food chains linked together).
You can read the Bones of the Human Skeleton here
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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:
Movement
Respiration
Nutrition
Irritability or Sensitivity
Growth
Excretion
Reproduction
Death
Adaptation
Competition
Please read the explanations on all the Basic Characteristics of Life here
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).
You can read on the introduction to Biology and the basic characteristics of life here
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
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