Topics in Biology
Tropical savanna explained with its characteristics Ecological pyramid explained with its importance and limitations 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 Male accessory sex organs: Seminal vesicles and bulbourethral glands Scrotum and its contents: Testicles 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 explained with their causes Types of desert and their characteristics Characteristics of tropical rainforest Swamp forest: What are swamp forests? Characteristics of swamp forests Savanna biome: Concept of the savannaAcademic Questions in Biology
In a food chain, the primary consumers are classified under trophic level _____.
A. Zero
B. One
C. Two
D. Three
E. Four
F. Five
Cold blooded animals are referred to as _____.
A. Homeotherms
B. Endotherms
C. Poilokitherms
D. Ectotherms
E. Thermotherms
F. None of the above
All reptiles are vertebrates.
A. True
B. False
_____ cells are responsible for the formation of osteoblasts.
_____ is a bone that constitute the axial skeleton.
Which of the following is false concerning cartilages and bones?
A diagram showing the movement of energy through a food chain is called a _____.
Which of the following is NOT a part of the wrist bones (or carpal bones)?
When we reflect on some of the basic necessities of life, oxygen (O2) will definitely rank among the top.
Although oxygen makes up about 21% of the atmosphere, it is still enough to make earth a livable planet for its different inhabitant.
Please read on layers and composition of the atmosphere here.
In humans, without the red blood cell and hemoglobin, atmospheric oxygen will be considered a waste because the various bodily cells, tissues and organs will not be able to utilize it for respiration. Meanwhile, understand that breathing and respiration aren't the same thing.
Breathing is simply when one inhales and exhales air. Everytime we breathe, oxygen is inhaled while carbon(IV)oxide is exhaled.
Respiration is the use of inhaled oxygen to break down food (glucose) in order to generate energy in the form of ATP (Adenosine TriPhosphate).
In order to ease our explanations on red blood cells and hemoglobin, we will look at some of the facts pertaining both.
Below are some of these facts:
Note: Blood is a mixture. It is made up of a liquid termed plasma and solid (called cells). Based on this fact, a blood can be dried and grounded to form a blood meal.
Please read on the separation of blood into its various components here.
The image below illustrates the shape and diameter of the red blood cell:
Understand that capillaries are tiny and microscopic blood vessels that operate at the cellular level. You can think of a blood vessel as a pipe that carries blood within our body system.
Apart from the capillaries, other blood vessels are the arteries and veins.
Read on the layers of an artery here.
Please read on interesting facts for students here.
The spleen and lymph nodes also produces some red blood cell during this period.
Please read on the bones of the human skeleton here.
Examples of long bones are humerus (bone of the arm) and femur (bone of the thigh).
During this period (after age 20), the red blood cells are now produced in the membranous bones. Examples of membranous bones are the vertebrae, sternum and ribs.
Please read on the types of bone here.
Note: The red blood cell has other functions too. For instance, they initiate the transport of CO2.
The transport of carbon(IV)oxide by hemoglobin is made possible because it contain an enzyme called carbonic anhydrase which catalyzes the reversible reaction between carbon(IV)oxide (CO2) and water (H2O) to form carbonic acid (H2CO3). It is in this form that CO2 is transported back to the lungs for expiration.
They become blue after the oxygen had been delivered to the body cells.
Please read on some amazing facts in biology here.
Erythropoietin is produced in the kidneys and an increase in its production is trigged during hypoxia.
Hypoxia is a condition where there is very little amount of oxygen in the blood; and as a result, the body tissues consequently lack oxygen.
You can read on homeostasis here.
Anemia will also occur when there are too few red blood cells in the blood.
Note: The higher the altitude, the lower the atmospheric oxygen.
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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 10 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.
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Amazing facts in Biology
99% of a panda's diet is bamboo. They may eat fish or other small animals occasionally
When attacked by insects, lima beans plant will often command parasitic wasps to their defence.
When the leaves of the lima bean's leaves are eaten by insects, the plant gives off a substance that signals parasitic wasps to swam in, destroying its enemies (the leaf-eating insects) in the process
Frogs drink water through their skin
Armadillos are western mammals known for their unique armor-like shell which are bulletproof
Although zebras are known for their characteristics black and white stripes, we still have some polka-dotted zebras
Charles Darwin is a British naturalist and biologist who contributed greatly into the study of evolution. According to research, he frequently ate the animals he studied
Lungs are the only human organ that can float on water
Unlike most snakes that lay eggs, anacondas give birth to live babies
A shrimp's heart is in its head
Women have more pain receptors than men
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:
Bios: means life.
Logos: means knowledge or to study.
Biology can therefore be defined as 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:
Movement
Respiration
Nutrition
Irritability or Sensitivity
Growth
Excretion
Reproduction
Death
Adaptation
Competition
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
It is noteworthy to state that plants are the only orgnisms that take away CO2 from the atmosphere