Food components and nutrition - class-VI
Description: food components and nutrition | |
Number of Questions: 34 | |
Created by: Sanjiv Memon | |
Tags: food and it's constituents components of food a healthy diet through the alimentary canal life process: nutrition, transportation, respiration, excretion constitutes of diet nutrition and its deficiency health, disease and yoga health and hygiene health and hygiene - food for living nutrition nutritious food evs how much food, what type of food biology human nutrition option d: human physiology food for health deficiency diseases food components and nutrition food - essence of life |
Along with all other nutrients, the body also needs an adequate supply of water.
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True
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False
The human body can last weeks without food, but only days without water. The body is made up of 50 to 75 per cent water. Water forms the basis of blood, digestive juices, urine and perspiration, and is contained in lean muscle, fat and bones. It helps to maintain the temperature of the body.
Leaves appear green because they reflect green color from light spectrum. The part in the leaf that is responsible for the reflection is
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Inner membrane of Chloroplast
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Thylakoid space
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Thylakoid membrane
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Stroma
Chloroplasts are green because they contain the green pigment chlorophyll in their thylakoid membranes. Chlorophyll is a pigment that absorbs red and blue light. So plants are green because chlorophyll reflects green light.
Which of the following statements is false regarding the experiment carried out for photosynthesis?
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The two leaves experiment proved that photosynthesis took place only in the green part of the leaf which is exposed to sunlight
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Half leaf experiment indicate that co2 is required for photosynthesis
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In half experiment some part of leaf is inserted in a test tube having soaked cotton
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Starch is formed in a leaf
Chlorides are mineral salts, and cannot be affected by
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Chemical Actions
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Biological Action
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Temperature
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Turbidity
What causes excessive growth of algae and other aquatic plants?
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Waste matters
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Organic Nutrients
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Inorganic Nutrients
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Solid waste
Simple inorganic substances released into environment is reused by
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Pyrolysis Reactor
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Pyrolysis Chamber
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Simple Reactor
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Simple chamber
Inorganic salts, mineral acids and metal compounds are:
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Inorganic pollutants
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Organic pollutants
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Air pollution
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All of them
Organisms, obtain energy from sunlight and make organic matter from inorganic substance, known as _____________________.
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Heterotrophs
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Autotrophs
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Consumers
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Decomposers
Simple sugar of blood is
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Galactose
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Lactose
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Sucrose
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Glucose
Glucose is a simple monosaccharide sugar. It is a hexose sugar. It is an aldose sugar. Ingested carbohydrates are broken down into monosaccharides which are absorbed in the intestine. Glucose is absorbed in intestine. Glucose is also chief form of sugar in blood and circulates in blood to supply energy to visceral organs.
Calcium is ____ nutrient.
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Organic
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Inorganic
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Both
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None of these
Calcium strengthens bones and teeth in our body. It is an inorganic substance which is later converted to its organic forms when it gets combined with carbon molecule.
Find the odd :
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Nitrogen
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Potassium
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Sulphur
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Ammonia
Nutrients obtained by plants and animals are classified into two groups organic and inorganic. Inorganic nutrients are those that are not easily found in animals or plants. They are always converted into their organic forms. Ammonia is an organic nutrient generally found in animals for synthesis of various metabolite.
Fertilizers supply this component that is essential for plant growth. Name the component.
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Carbon
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Calcium
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Nitrogen
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Potassium
Nitrogen is one such element which is very important in plant growth because it is an essential part of the chlorophyll that is the site of photosynthesis.
Plants require nitrogen along with carbohydrates. This nitrogen can be obtained by
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Rhizobium
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Vibrio
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Salmonella
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Felix
Rhizobium is a nitrogen-fixing bacteria found in symbiotic association with the root nodules of leguminous plants.
Which one includes others?
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Photosynthesis
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Catabolism
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Metabolism
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Anabolism
Photosynthesis is a metabolic process of formation of glucose from carbon dioxide and water in presence of light energy.
Reduced coenzyme NADPH $(H^+)$ is produced in respiration during
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Glycolysis
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PPP
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Krebs cycle
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Terminal oxidation.
PPP or pentose phosphate pathway is an important pathway that takes place in the cytoplasm.
One example of a nutrient in its reduced form is
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Carbon in $CO _2$
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Hydrogen in $H _2O$
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Nitrogen in $NH _3$
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Sulphur in sulphate
Which of the following statement is correct for a protective role of photosynthesis?
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With the insufficient fund of availability of co2 the light energy cannot be fully absorbed
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In c4 plant some of the oxygen is combined with rubisco
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Either presence or absence of light, yield and productivity is c4 plant is always high
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Excess light can cause photo-oxidation and damage the plant, Photorespiration provides protection against this
A limiting factor is simply anything in short supply that will limit the rate of photosynthesis. Photosynthesis has 3 limiting factors: light intensity, carbon dioxide concentration, temperature. Sometimes photosynthesis is limited by the concentration of carbon dioxide in the air. Even if there is plenty of light, a plant cannot photosynthesis if there is insufficient carbon dioxide as the light energy cannot be fully absorbed.
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Silicon
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Magnesium
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Iron
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Sodium
A comparison of elements present in non-living and living matter is given in the table below:
Elements | $\%$ weight of | $\%$ weight of |
---|---|---|
Earth crust (non living matter) | Human body (living matter) | |
Hydrogen | 0.14 | 0.5 |
Carbon | 0.03 | 18.5 |
Oxygen | 46.6 | 65.0 |
Nitrogen | very little | 3.3 |
Sulphur | 0.3 | 0.3 |
Sodium | 2.8 | 0.2 |
Calcium | 3.6 | 1.5 |
Magnesium | 2.1 | 0.1 |
Silicon | 27.7 | negligible |
What is needed in photosynthesis to convert carbon dioxide into organic molecules?
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Light and hydrogen from the splitting of water
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Light and oxygen from the splitting of water
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ATP and hydrogen from the splitting of water
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ATP and oxygen from the splitting of water
What does an inorganic compounds contain?
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Sodium Chloride
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Nutrients
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Oil
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Fats
During prolonged fasting, the sequence of organic compounds used by body is
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Carbohydrates, fats, proteins
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Fats, carbohydrates, proteins
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Carbohydrates, proteins, lipids
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Proteins, lipids, carbohydrates
The body burns fat after first exhausting the contents of the digestive tract along with glycogen (carbohydrates) reserves stored in muscle and liver cells. During short periods of energy abstinence, the human body will burn primarily free fatty acids from body fat stores. After prolonged periods of starvation when the body has depleted its body fat, it begins to burn lean tissue and muscle (protein) as a fuel source.
The radiant energy is stored in the form of chemical energy in
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DNA
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stored food
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RNA
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ATP
Chemical energy is stored in the bonds that connect atoms with other atoms and molecules with other molecules. Because chemical energy is stored, it is a form of potential energy. When a chemical reaction takes place, the stored chemical energy is released. Chemical Energy - is really a form of potential energy and is the energy stored in food or chemical combinations. Radiant Energy - is a combination of heat and light energy.
Best source for dietary protein for a vegetarian is
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Soya Bean
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Gram
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Groundnut
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Milk
- A vegetarian diet can be a healthy option for many reasons. When choosing vegetarian foods, consider the different ways to get the nutrients you need, including vegetarian protein sources.
- For those looking for meatless protein sources, especially lacto-vegetarians whose diets do not include eggs. Milk and milk products are a great choice because milk is a good source of high-quality protein. Hence, the best source for dietary protein for a vegetarian is milk.
Nutrition of animals is related to
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Trophology
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Teratology
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Dysteleology
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Tricology
If one's diet exceeds one's need, it is called
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Malnutrition
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Balanced diet
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Over nutrition
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None of these
- 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.
Which of the following is incorrect? Good nutrition:
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Can help to slow the ageing process
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Boosts immune system
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Gives you vitality and energy
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Causes fatigue and low mood
Option D is the correct answer here.
Protective components of foods are
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Minerals and vitamins
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Minerals, carbohydrate and proteins
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Minerals, carbohydrate and fats
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Vitamins, water and carbohydrate
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
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Proteins
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Carbohydrates
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Hormones
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Fats
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.
___________ is an inorganic nutrient.
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Nitrogen
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Urea
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Glucose
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Glycine
An inorganic nutrient is essentially any compound or element that is not carbon-based, but is otherwise necessary to maintain health and optimum growth of a plant, animal, or human. Nitrogen is an inorganic nutrient that is later converted to organic forms like nitrite, nitrate or ammonia.
The most important component formed by plants which is useful for the growth is
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Carbohydrates
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Proteins
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Fats
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None of the above
Proteins are major element required in the growth of the plant cells. In plants, all the 20 amino acids should be formed in the plant body because they cannot take them up fro any other source. Proteins are essential as they are the basic constituents of enzymes, cell membrane, and transport systems.
Carbohydrate is made up of all except
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Carbon
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Nitrogen
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Oxygen
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Hydrogen
Carbohydrates, as the name suggests, are the hydrates of carbon and thus are made up of molecules of hydrogen, oxygen and carbon.
Water is important for the functioning of body as
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It releases energy
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It has buffering action
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Kills microorganisms
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It is a very good solvent
Water present in the human body supports the metabolic reactions in the body. The enzymes which act as a catalyst in these biological reaction acts efficiently in presence of water. The salts like sodium and potassium which dissolves in the water act as a transporter as it is a very good solvent. These help in the transmission of the nerve impulse. It helps to maintain a constant temperature inside the body. It also helps in cellular processes like endocytosis and exocytosis. It helps to maintain osmotic condition inside the cell.
The indigestible material in food is also known as
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Roughage
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Fats
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Minerals
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Vitamins
All the constituents of food are digested but roughage or fibres are not digested, but they play a very important role in the formation and smooth elimination of bowels.
Which of the following foods is a source of roughage?
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Cooked rice
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Eggs
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Whole grains
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Fish