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Biology for Life To give a general awareness in Biology.Biology questions for competitive exams.Biology quizzes etc.

Calotropis gigantea It is a large shrub growing to 4 m (13 ft) tall. It has clusters of waxy flowers that are either ...
21/06/2025

Calotropis gigantea
It is a large shrub growing to 4 m (13 ft) tall. It has clusters of waxy flowers that are either white or lavender in colour. Each flower consists of five pointed petals and a small "crown" rising from the center which holds the stamens.
Given the potent bioactivity of calotropin, calotropis gigantea has been used as a folk medicine in India for many years, and has been reported to have a variety of uses. In Ayurveda, Indian practitioners have used the root and leaf of C. procera in asthma and also used in bacterial infection, swelling with redness, boils also and shortness of breath and the bark in liver and spleen diseases.

GREAT SCIENTISTS IN BIOLOGY. PART-1 CHARLES DARWIN. ----------------Charles Robert Darwin bor...
06/06/2025

GREAT SCIENTISTS IN BIOLOGY.
PART-1
CHARLES DARWIN.
----------------
Charles Robert Darwin born on February 12 ,1809 in Shrewsbury,United Kingdom. He is an English naturalist whose scientific theory of evolution by natural selection become the foundation of modern evolutionary theories.
In 1831 Darwin started a voyage in a ship of British royal Navy ,the HMS beagle. The main aim of the journey was survey the coastal line of South America and chart it harbors to make better maps of the region. During this journey Darwin collected a variety of natural specimens including birds ,plants and fossils. Galapagos Islands were of particular interest to Darwin. The finches he observed there have great importance for formulating his theory of natural evolution.
Upon his return to England in 1836 Darwin continued his work. He studied the specimens and fossils collected from various regions during his voyage.
In 1859 Darwin published his observations about evolution and natural selection in his famous book "Origin of species".
Through his theory he said that all organisms produce more number of offsprings that can with stand on earth. He called it as over production. There is only limited resources on earth. So due to over production there is a struggle for existence between organisms and nature. Darwin also observe that there happens certain changes in the characters of organisms. The changes maybe either favourable or unfavourable to the organisms. Those with favourable variations will survive in the struggle for existence and those with unfavourable variations will destroyed by nature itself.Thus nature makes selection. It is called natural selection. Darwin said that through this continuous process of natural selection new species will form in nature.
He died on 19th April 1882 at the age of 73. He is buried in westminster Abbey in London, England.

06/06/2025

Position of DNA

14/01/2025

1. The average life span of platelets is?
2. Name the gland which produce FSH hormone?
3. Name the branch of science which deals with the study of fossils?
4. Carbon 14 method of determining age of fossils was suggested by?
5. Name the ship on which Darwin Travels for formulating his famous evolutionary theory?
6. Who proposed the ABO grouping system of blood in human being?
7. Where is the headquarters of Indian Council for Agricultural Research(ICAR)?
8. What's the scientific name of rice?
9. Recombinant DNA technology is otherwise known as?
10. Barley coffee and sorghum originated in which country?........................................
ANSWER........................................
1.3-7days
2. pituitary gland
3. palaeontology
4.W.F.Libby
5.H.M.S.Beagle
6. Carl Landsteiner
7. New Delhi
8. Oryza sativa
9. Genetic engineering
10. Ethiopia.

Food that increase the level of happy hormones Yes, food can play a significant role in boosting happy hormones, also kn...
23/07/2024

Food that increase the level of happy hormones

Yes, food can play a significant role in boosting happy hormones, also known as neurotransmitters, in our brain. Here are some foods that can help increase the levels of happy hormones like serotonin, dopamine, and endorphins:

1. Complex carbohydrates: Whole grains, fruits, and vegetables increase serotonin levels.
2. Omega-3 rich foods: Fatty fish, nuts, and seeds support brain health and happiness.
3. Dark chocolate: Contains phenylethylamine, a natural mood elevator.
4. Turmeric: Curcumin in turmeric stimulates serotonin and dopamine production.
5. Fermented foods: Kimchi, sauerkraut, and kefir support gut health, linked to happiness.
6. Green tea: L-theanine promotes relaxation and calmness.
7. Nuts and seeds: Almonds, sunflower seeds, and pumpkin seeds are rich in magnesium and healthy fats.
8. Fatty fish: Salmon, sardines, and mackerel are rich in omega-3s.
9. Eggs: Rich in vitamin D and choline, supporting brain health.
10. Berries: Blueberries, strawberries, and raspberries are rich in antioxidants and fiber.

Incorporating these foods into your diet can help support happy hormone production, but remember, a balanced diet and a healthy lifestyle are essential for overall well-being!.

There are several things you can do to naturally boost your levels of "happy hormones" like dopamine, endorphins, oxytoc...
23/06/2024

There are several things you can do to naturally boost your levels of "happy hormones" like dopamine, endorphins, oxytocin, and serotonin. Here are a few tips:
* Exercise regularly: Physical activity is a well-known mood booster. Aim for at least 30 minutes of moderate-intensity exercise most days of the week.
* Spend time outdoors: Sunlight exposure helps regulate serotonin production.
* Eat a healthy diet: Certain foods can promote the production of happy hormones. Include plenty of fruits, vegetables, whole grains, and lean protein in your diet.
* Get enough sleep: When you're well-rested, your body is better able to produce the hormones it needs for happiness.
* Strong social connections: Spending time with loved ones releases oxytocin, the "bonding hormone."
* Listen to upbeat music: Music can have a powerful effect on mood. Listening to music you enjoy can trigger the release of dopamine.
* Practice relaxation techniques: Techniques like meditation and yoga can help reduce stress and promote feelings of calm and well-being.
*

Importance of exercise.........................................Here are some amazing health benefits of regular exercise...
29/01/2024

Importance of exercise.........................................
Here are some amazing health benefits of regular exercise.
1. Regular exercise reduce stress
2. Makes you feel happier
3. It improve your mood
4. Keeps your brain fit.
5. Exercise also improve mental health.
6. It boost our immune system
7. Helps better joint function
8. Improve muscle strength
9. It develops confidence.
10. Strengthen the bones
11. Strengthen heart
12. High cholesterol levels become normal
13. Controls blood pressure
14. Lower the risk of diabetes
15. Reduces the feeling of depression
16. More oxygen is supplied to cells
17. Less fatigue
And many more......
So exercise must be a part of our routine.

1. Name the secretion produced by sebaceous glands?2.Name the protein present in the epidermis of skin which prevents th...
26/01/2024

1. Name the secretion produced by sebaceous glands?
2.Name the protein present in the epidermis of skin which prevents the entry of disease causing germs?
3. Name the white blood cells which participate in phagocytosis?
4. The process by which white blood cells engulf pathogens and destroying it is called?
5. Name the vitamin needed for blood clotting?
6. What is the normal temperature of human body in Fahrenheit?
7. What is the expansion of MRI scan?
8. Which plant is selected by Mendel for his experiments related with genetics?
9. In 1962 James Watson and Francis crick were awarded the Nobel prize for which invention?
10. Which enzyme is known as genetic scissors?........................................
Answer........................................
1. Sebum
2. Keratin
3. Monocyte and neutrophil
4. Phagocytosis
5. Vitamin k
6. 98.6 degree fahrenheit
7. Magnetic resonance imaging scan
8. Pea plants
9. Spiral double helical model of DNA
10. Restriction endonuclease.

Structure of human ear. The anatomy of ear can be studied under three heads. First is external ear. This part consists o...
25/01/2024

Structure of human ear.
The anatomy of ear can be studied under three heads. First is external ear. This part consists of the externally visible pinna, then the earcanal, and eardrum. The second part is middle ear. It is a chamber consists of three bones malleus, incus and stapes.Among this stapes is the smallest bone in human body. The middle ear is connected with pharynx through a canal called eustachian canal.This is to equalaise the pressure on either side of eardrum.
The third part is internal ear which contain three semicircular canals , a chamber called vestibule and a coiled chochlea. The first two parts are related with maintaining equlibrium of the body. Chochlea is related with hearing.

Structure of human eye. The externaly visible part of eye is a small portion. The remaining part is sunk in the sockets ...
23/11/2023

Structure of human eye.
The externaly visible part of eye is a small portion. The remaining part is sunk in the sockets of skull.As a valuable organ the body itself gives some protection to eyes. The position of eye is in such a way that it gets maximum protection.The other protective measures are eyelids, eyelashes,tear, and eyebrows. Sometime you may wonder how eyebrows protect our eyes. It prevent sweat from forehead reaching our eyes.
Human eye is made us of three distinct layers. They are sclera,choroid and retina. Sclera is the outermost layer; choroid the middle one and retina the innermost layer. The front part of sclera is transparent called cornea.The second layer forms a screen like part behind cornea called iris. The small aperture seen in the centre of iris is called pupil. Light enters inside the eye through pupil. There is a convex lens fitted behind iris. It helps to focus image on retina. Lens can adjust the focal length automatically to view near and distant objects.

Autonomous nervous system. It includes two systems sympathetic system and parasympathetic system.
18/10/2023

Autonomous nervous system. It includes two systems sympathetic system and parasympathetic system.

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