Biology Nutrition Health

Explanation

Probiotics are composed of beneficial bacteria and sometimes yeast. These organisms are naturally found in our gut and also in certain foods we consume. Probiotics aid in the digestion of various substances, including milk sugars, helping improve gut health and overall digestion.

Explanation

Lemongrass is used in preparing a natural mosquito repellent due to its high citronella content. Citronella is a natural insect repellent that masks scents that attract mosquitoes, making it an effective and eco-friendly option for repelling mosquitoes.

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In the realm of Biology, Agaricus, Nostoc, and Spirogyra are three organisms. Among these, Nostoc serves as a biofertilizer by converting atmospheric nitrogen and is commonly applied to paddy fields.

Explanation

The process of adding nitrogen to the soil can be achieved through the excretion of urea by animals and the death of vegetation. However, burning coal by humans does not contribute nitrogen to the soil, as it releases nitrogen oxides into the atmosphere instead. So, the correct options are 1 and 3 only (c).

Explanation

Out of the options provided, rice is identified as the least effective source of nutritional calcium when compared to ragi, skimmed milk, and eggs.

Explanation

In the given statements, it is correct that caffeine found in tea and coffee acts as a diuretic and that citric acid is commonly used in soft drinks. However, it is incorrect to say that ascorbic acid (vitamin C) is crucial for bone and teeth formation; instead, vitamin D plays that role. Additionally, citric acid is not a suitable replacement for ascorbic acid in our dietary needs. Therefore, the correct statements among the options provided are 1 and 2 only, which makes option (a) the correct answer.

Explanation

Vitamin D is a type of vitamin that dissolves in fat, not water. It plays a role in aiding the body in absorbing calcium and also in preventing rickets, a condition resulting from its deficiency.

Explanation

Vitamin K is crucial for blood clotting because it plays a role in producing clotting factors.

Explanation

In the context of a balanced human diet, it is important to include fatty acids. This is because the cells in the human body are unable to produce any fatty acids on their own.

Explanation

Glycine is not considered an essential amino acid because the human body has the ability to produce it. On the other hand, lysine, histidine, and tryptophan are essential amino acids as they cannot be synthesized by the body and must be obtained through the diet.

Explanation

Xerophthalmia is a condition that results from a lack of vitamin A. It is commonly observed in economically disadvantaged populations.

Explanation

Linus Carl Pauling suggested that consuming a high amount of vitamin C could potentially aid in reducing the risk of both the common cold and cancer.

Explanation

Consuming fish is believed to be beneficial for health compared to the meat of other animals because fish contains polyunsaturated fatty acids. These fatty acids act as antioxidants and aid in the formation of tissues.

Explanation

In buffalo milk, the average fat content is 7.2%, while in cow milk, it is 4.5%. The correct answer to the question regarding the average fat content of buffalo milk is option (a), which is 7.2%.

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The primary element found in honey is fructose.

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For a moderately active woman, the recommended daily intake of protein is 46 grams.

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Organisms need a minimum of 27 elements to survive, with 15 of these being metals. The essential elements needed in larger quantities are potassium, sodium, magnesium, and calcium. Manganese, molybdenum, and copper are considered trace elements. The correct option is (c) potassium, sodium, magnesium, and calcium.

Explanation

In this biology question, you were asked to match items from List-I with corresponding items from List-II. The correct match is: Vitamin (A) with Carotene (2), Enzyme (B) with Pepsin (1), Hormone (C) with Progesterone (4), and Protein (D) with Keratin (3). This corresponds to option (b) as the correct answer. Regarding the statement about the Vitamin A group including retinol and carotene being a precursor to this group, it means that carotene is a substance that can be converted into Vitamin A in the body.

Explanation

Malnutrition occurs when there is not enough, too much, or an imbalance of nutrient intake.

Explanation

In addition to proteins and carbohydrates, milk also contains significant amounts of calcium and potassium.

Explanation

Among the options provided, sodium is the only micronutrient that is not essential for most plants. Boron, zinc, and copper are crucial micronutrients required by plants for their growth and development.