Answer:
The answer is below.
Explanation:
All carbohydrates are composed of one or more <em>monosaccharides</em> . A protein is composed of one or more long, unbranched chains called <em>peptides</em> which are coiled and folded into a specific 3-dimensional shape. A polypeptide is composed of monomers called <em>amino acids</em> . Nucleic acids are composed of monomers called <em>nucleotides</em> . Triglycerides are composed of glycerol and <em>fatty acids</em> . Glucose, starch, and cellulose are all examples of <em>carbohydrates</em> . RNA and DNA are examples of <em>nucleic acids</em> . Fats, steroids, and terpenes are examples of <em>lipids</em> . Polymers are formed by linking monomers together through <em>chemical</em> reactions. Breaking the bonds between the subunits of a polymer involves <em>catabolic</em> reactions. During a hydrolysis reaction, a molecule of water is <em>consumed</em> . During a condensation reaction, a molecule of water is <em>formed.</em>
Natural selection affects undesirable traits, because as time pass on, the undesirable traits will be lost due to the competition with the desirable traits. For an example, the Rabbits that runs slower than normal rabbits, will eventually die due to the natural selection because the normal ones will run faster than the undesirable one.
Answer:
The correct answer is: True.
Explanation:
- Obesity is a disease condition in which the BMI or Basal Metabolic Index of a person goes beyond normal.
- The BMI of a person is calculated by finding the ratio between the weight of the person measured in kilograms and the square of the height of the person measured in metres.
- A person having a BMI below 18 is considered to be underweight, between 18 and 25 is normal weight, between 25 and 30 in overweight and above 30 is obese.
- The disease is caused more due to social reasons than biological reasons.
- When a person A lives near the vicinity of another person B who is obese, this means the person A lives in an environment where a proper balanced diet is not maintained during the consumption of food. They tend to consume food rich in oil and fat.
- Hence, the intake of the fat rich food by the person A will result him in consuming fat and oil in amounts far more than his body actually requires. Excess fats deposits in the body thereby increasing his BMI and resulting into obesity.
- Due to obesity the person B will also show the symptom of being lethargic and will not prefer to do exercises. This lethargy would be induced in person A as well.
Answer:
Respiratory System: The respiratory system's main job is to move fresh air into your body while removing waste gases.
Nostril: To warm air on inhalation and remove moisture on exhalation.
trachea: Serves as passage for air, moistens and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles.
bronchiole: To deliver air to a diffuse network of around 300 million alveoli in the lungs.
alveoli: To exchange oxygen and carbon dioxide molecules to and from the bloodstream during breathing.
pharynx: Helps the respiratory system by allowing air to make its way to the respiratory tract.
larynx: Produces vocal sounds and prevents the passage of food and other foreign particles into the lower respiratory tracts.
lungs: To help oxygen from the air we breathe enter the red cells in the blood.
ribs: To aid respiration and help protect the lungs.
diaphragm: Contracts and flattens when you inhale. Creates a vacuum effect that pulls air into the lungs, and relaxes when exhaling.
