Tag: need for nutrients

Digestion tanks (anaerobic digesters) produce biogas, which is primarily methane. Methane has a high energy density, giving the gas a high calorific value.

Just like any food or drink, alcoholic drinks contain energy or calories. There are 7 calories per gram of alcohol (29kJ). A 'standard' alcoholic drink or 'unit' contains 8 grams of alcohol, which is equal to 56 calories from the alcohol alone. 

Molecules called lipoproteins to carry cholesterol in the blood. Two important kinds of lipoproteins are low-density lipoprotein (LDL) and high-density lipoprotein (HDL). LDL cholesterol is often referred to as "bad cholesterol" because too much is unhealthy. HDL is often referred to as “good cholesterol” because it is protective.

Carbohydrates (also called saccharides) are molecular compounds made from just three elements: carbon, hydrogen and oxygen. Monosaccharides (e.g. glucose) and disaccharides (e.g. sucrose) and polysaccharide (starch). They are often called sugars.

Nutrients that we obtain through food have vital effects on physical growth and development, maintenance of normal body function, physical activity and health. Nutritious food is, thus needed to sustain life and activity. Our diet must provide all essential nutrients in the required amounts. Requirements of essential nutrients vary with age, gender, physiological status and physical activity. Dietary intakes lower or higher than the body requirements can lead to under nutrition (deficiency diseases) or over nutrition (diseases of affluence) respectively. So, the correct option is 'True'.

• Malnutrition is the condition or state in which the body does not get proper nutrition or get overnutrition (imbalanced nutrition) and as a result a deficiency or excess or imbalanced of energy. 
• Malnutrition is referred to overnutrition resulting from overeating or excessive intake of specific nutrients. 
• The amount of nutrients exceeds the amount required for normal growth, development, and metabolism. Hence, If one's diet exceeds one's need, it is called overnutrition.
  

Option D is the correct answer here.

Protective components of foods are minerals and vitamins. Vegetables like spinach, cabbage, brinjal, beans, and fruits are called protective foods. These components protect us from diseases. Hence, they are called protective components of food. Carbohydrates and fats are the energy components of the food. Proteins are bodybuilding components of the food. 

The nutrient synthesized by plants through photosynthesis is carbohydrates. Plants are autotrophs and they synthesize their own food by the process of photosynthesis. During photosynthesis, they convert carbon dioxide and water in presence of sunlight and chlorophyll to produce carbohydrates (glucose) and oxygen.