The basic building block of a protein is called an amino acid. There are 20 amino acids in the proteins you eat and in the proteins within your body, and they link together to form large protein molecules. The variety of ways they mix and match allows for the great diversity of proteins in nature. Understanding the structure of amino acids and how they relate to the proteins they create can help you appreciate how critical these nutrients are in your diet.

AAPHER stands for American Alliance for Health, Physical Education, and Recreation. It has created a physical fitness test which has six test items designed to measure the physical fitness of boys and girls in grades five to twelve. The six items are:

1. Pull ups: It judges the arm and shoulder girdle strength. This item has to be done using the overhead grasp from a hanging position on the bar. The arms and legs should be fully extended. The person should raise his body with his arms until the chin is above the bar. Then he should lower the body to the full hanging position. While doing this, the knees should not be bent. The number of completed pull-ups is the person's score.

For girls the pull ups have to be started from a flexed arm hang.

2. Flexed Leg Situps: It judges the efficiency of the abdominal and hip flexor muscles. The person should lie on his back with knees flexed. The hands should be placed at the back of the neck. Fingers should be clasped and the elbows should touch the mat. The person should raise his head and elbows forward until the elbows touch the knees. This is considered to be one sit-up. The score depends on the number of correct sit-ups a person performs in 60 seconds.

3. Shuttle Run: It judges the speed and change of direction. Two parallel lines are drawn 30 feet apart. Two wooden blocks are placed behind one line. When the signal 'Ready', 'Go' is given the person who is standing behind the other line should run and pick up one block. He should run back and place the block behind the starting line. He should repeat the same with the second block. He is given two trials. The better one out of the two trials (nearest to the 10th of a second), is the score of the person.

4. Standing Long Jump: It judges the explosive power of the leg muscles. The person has to stand behind a take-off line with his feet apart. Then he has to jump forward. He is given three trials. The best jump is his score.

5. 50 Yard Dash or Sprint: It judges speed. Two lines are drawn 50 yards apart. The person has to run from the start to the finish line. The time taken is recorded in seconds (nearest to the 10th of a second), this is his score.

6. 600 Yard Run: It judges the person's endurance. In this, the person has to run for a distance of 600 yards. The person can walk in between. But the goal is to cover the distance in the shortest time. The time taken to cover the distance is recorded in minutes and seconds.

Committee for Publicity: The committee for publicity announces the date, venues and sports events, advance information to the institutions and printing, etc. Its main responsibility is to advertise the sports events.

Micronutrients are nutrients that are required by the body in lesser amounts for its growth and development. They play a major role in the metabolic activities of the body. These include vitamins and minerals.

Emile Zola (1840 - 1902) is widely regarded as the ''father of naturalism.

The ancient Greek philosopher Plato (circa 427 BCE to circa 347 BCE) is considered to be the Father of Idealism in philosophy.

A law which states that, in learning, the more frequently a stimulus and response are associated with each other, the more likely the particular response will follow the stimulus. The law implies that one learns by doing and one cannot learn a skill, for instance, by watching others. 

Law of Exercise, Primary Laws of Learning:

This law is also called 'Law of Use and Disuse'. (i) Law of Use: When a modifiable connection is made between a situation and a response, that connection's strength is other things being equal, increased'.

Fixture of 7 teams in league tournament in cyclic method number of matches = n(n-1)/2

n = no. of teams
= 7(7-1)/2
= 7x6/2
 = 42/2  
= 21 matches
Total no. of rounds = 7
Read more on Sarthaks.com - https://www.sarthaks.com/300294/draw-a-fixture-of-7-teams-participating-in-the-league-tournament

A congenital disorder of movement, muscle tone or posture.

Cerebral palsy is due to abnormal brain development, often before birth.

Symptoms include exaggerated reflexes, floppy or rigid limbs and involuntary motions. These appear by early childhood.

Long-term treatment includes physical and other therapies, drugs and sometimes surgery. Causes of acquired cerebral palsy may include. Brain damage in the first few months or years of life. Infections, such as meningitis or encephalitis. Problems with blood flow to the brain due to stroke, blood clotting problems, abnormal blood vessels, a heart defect that was present at birth, or sickle cell disease.

Seeding is a special advantage given to last year winner & runner-up team or to the good teams of the Tournament with the help of seeding teams can be directly entered into any round except the final round seeding always given in form of power of two i.e. (2,4,8,16,32).

Importance of tournament

• The sportsman learns the discipline by playing tournaments.
• The sportsman meets other sportsman at a single platform.
• He learns ethical values such as honesty, fair play, respect for others.
• Tournaments provides recreation to all, i.e… organizers, spectators, students.