Tag: food and it's constituents

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Questions Related to food and it's constituents

Multiple choice biology food and it's constituents energy giving food carbohydrate and its test biological molecules

Carbohydrates are made of

  1. Carbon

  2. Hydrogen

  3. Oxygen

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Carbohydrates are molecular compounds made from just three elements carbon, hydrogen and oxygen. Carbohydrates are one of the main types of nutrients. They are the most important source of energy for your body. Your digestive system changes carbohydrates into glucose (blood sugar). Your body uses this sugar for energy for your cells, tissues and organs. 

Therefore, the correct answer is option D.

Multiple choice biology food and it's constituents energy giving food carbohydrate and its test biological molecules

Which of the following do not provide energy for animals?

  1. Fats

  2. Carbohydrates

  3. Vitamins

  4. Proteins
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In animals fats, carbohydrates and proteins are responsible for generation of energy.
Proteins are metabolized by breaking down into individual amino acids by various enzymes and hydrochloric acid present in the gastro-intestinal tract which are further broken down to α-keto acids which can be recycled in the body for generation of energy, and production of glucose or fat or other amino acids.
Fats are the major contributor of the molicules like acetyl-CoA which is an integral part of Krebs cycle and generates energy.
Carbohydrates takes part in cellular process like glycolysis and leads to generation of energy.
Vitamins are not directly involved in generation of energy although they indirectly support the process of energy production.
So, the correct answer is option C.

Multiple choice biology food and it's constituents energy giving food carbohydrate and its test biological molecules

Which of the following is oligosaccharide?

  1. Lactose

  2. Glycogen

  3. Glucose

  4. Ribose
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oligosaccharides are formed by joining together 2-9 monosaccharides molecules. For example maltose, sucrose, lactose.

Lactose is called milk sugar. It is composed of one glucose molecule and one galactose molecule joined by 1 and 4 carbons. Thus option A is the correct answer.

Multiple choice biology food and it's constituents energy giving food carbohydrate and its test biological molecules

Rhamnose is

  1. A simple carbohydrate which follows empirical formula

  2. A complex carbohydrate which follows empirical formula

  3. A simple carbohydrate which does not follows empirical formula

  4. A complex carbohydrate which does not follows empirical formula
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

All monosaccharides with six carbon atoms, resembling glucose, fructose, etc have an empirical formula of C$ _n$H$ _{2n}$O$ _n$. However, the molecular formula of Rhamnose is C$ _6$H$ _{12}$O$ _5$.

Hence, it does not follow the empirical formula
So, the correct answer isn't simple carbohydrate which does not follow empirical formula'

Multiple choice biology food and it's constituents energy giving food carbohydrate and its test biological molecules

Which of the following is known as reducing sugar?

  1. Monosaccharide

  2. Oligosaccharide

  3. Polysaccharide

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A reducing sugar has a free aldehyde group or a free ketone group so it can act as reducing agent.
Monosaccharides are the simplest carbohydrates. They cannot be hydrolyzed into smaller units. These sugars contain a free aldehyde or ketone group. The anomeric carbon of the reducing sugar has OH group. For example, glucose and fructose.
So, the correct answer is option A.
Multiple choice biology food and it's constituents energy giving food carbohydrate and its test biological molecules

${C} _{n}{H} _{2n}{O} _{n}$ is the formula of

  1. Carbohydrate

  2. Fatty acid

  3. Fat

  4. Nucleic acid
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A monosaccharide is the simplest form of carbohydrate which is composed of carbon, hydrogen, and oxygen. The basic formula of the monosaccharide is C$ _n$H$ _{2n}$O$ _n$. For example, the formula for the most common monosaccharide, glucose is  C$ _6$H$ _{12}$O$ _6$. So, the correct answer is option A.
Multiple choice biology food and it's constituents energy giving food carbohydrate and its test biological molecules

If glucose is to be injected in human blood, the property to be matched with glucose is

  1. Density

  2. Viscosity

  3. Osmotic potential

  4. Sugar group
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When injecting substances into the blood, they must be isotonic to prevent damage to red blood cells. Osmotic potential is the property that determines the tonicity of the solution.