Biology · Chemistry
Lipids, Fats, and Biochemistry
1,130 Questions
Lipids, fats, and biochemistry explore the structure and function of biological molecules. This includes fatty acids, cholesterol, trans-fats, and cellular membranes. Questions on this topic frequently appear in science sections of competitive government exams.
Types of fats and lipidsCholesterol and human bodyFatty acidsCellular membranes
Lipids, Fats, and Biochemistry Questions
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Glucose
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Gelatine
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Galactose
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Glycerol
D
Correct answer
Explanation
Triglycerides, which make up most dietary fats, consist of three fatty acid molecules bound to a single backbone molecule of glycerol. Glucose and galactose are simple sugars, while gelatine is a protein derived from collagen.
A
Correct answer
Explanation
Oily fish such as salmon, mackerel, and sardines are excellent sources of omega-3 fatty acids, which are essential fatty acids. Since the human body cannot produce these fats on its own, they must be obtained through our diet.
B
Correct answer
Explanation
Fat is classified as a macronutrient because the body requires it in relatively large quantities to provide energy and support cellular functions. Micronutrients, on the other hand, are vitamins and minerals that the body needs only in very small amounts.
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lipid
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globular protein
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fibrous protein
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carbohydrate
C
Correct answer
Explanation
Collagen is the most abundant protein in the animal kingdom and is a fibrous structural protein. It provides strength and structural support to various connective tissues like skin, tendons, and ligaments.
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Free Radicals
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Antioxidants
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Hydrogenation
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Monoglycerides
B
Correct answer
Explanation
Antioxidants are substances that neutralize free radicals by donating electrons, thereby protecting cells and supporting the immune system against oxidative damage.
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Bloom
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Fats
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Carbohydrates
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Protein
D
Correct answer
Explanation
Proteins are large, nitrogenous organic compounds made up of long chains of amino acids. Carbohydrates and fats are also organic compounds, but they do not contain nitrogen as a defining structural element.
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Fats
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Protein
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Ration
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Concentrate
A
Correct answer
Explanation
Fats are organic molecules that serve as a concentrated energy source and are stored as oily or greasy substances in animal bodies. Unlike proteins or rations, fats are primarily composed of lipids.
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Fats
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Carbs
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Calories
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Sugars
C
Correct answer
Explanation
Calories are the standard units used to measure the energy value of feed. Fats, carbohydrates, and sugars are types of nutrients that provide energy, but they are not the unit of measurement itself.
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To assist wool production
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To make them ready for culling out
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Insulation and energy
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To help bone and teeth building
C
Correct answer
Explanation
Fats are a highly concentrated source of energy, providing more than twice the energy per gram compared to carbohydrates or proteins. Additionally, fat deposits in the body serve as thermal insulation to help regulate body temperature and protect internal organs.
C
Correct answer
Explanation
Fats are saturated lipid compounds that remain solid at room temperature, whereas oils are typically unsaturated lipids that are liquid at room temperature. Both are types of lipids, but fat specifically refers to the solid form.
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Carbs
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Lipids
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Protiens
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Fiber
A
Correct answer
Explanation
Carbohydrates (carbs) are organic compounds composed of carbon, hydrogen, and oxygen, typically in a 1:2:1 ratio, and serve as a primary energy source in animal feed. While lipids also contain these elements, carbohydrates are the classic feed component defined primarily by this basic structure and role.
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Protiens
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Carbs
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Vitamins
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Lipids
D
Correct answer
Explanation
Lipids are a broad group of naturally occurring organic molecules that include fats, oils, waxes, and sterols. They are insoluble in water but soluble in organic solvents.
B
Correct answer
Explanation
Lipids (fats and oils) are organic compounds composed primarily of carbon (C), hydrogen (H), and oxygen (O) atoms.
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Energy
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Stored energy
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Fat
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Hair & fingernails
A
Correct answer
Explanation
Carbohydrates are the body's primary and preferred source of quick energy for cellular functions and physical activity.