Tag: different nutrients in food

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Multiple choice biology food for health fats fats and their test different nutrients in food

An example for essential fatty acids

  1. Glutamic acid

  2. Aspartic acid

  3. Linoleic acid

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

Essential fatty acids, or EFAs, are fatty acids that humans and other animals must ingest because the body requires them for good health but cannot synthesize them. Two essential fatty acids, linolenic and linoleic acid, cannot be synthesized in the body and must be obtained from food. These basic fats, found in plant foods, are used to build specialized fats called omega-3 and omega-6 fatty acids.

Multiple choice biology food for health fats fats and their test different nutrients in food

Each fat molecule is formed from 

  1. One glycerol molecule and one fatty acid molecule

  2. One glycerol molecule and three fatty acid molecules

  3. Three glycerol molecules and one fatty acid molecule

  4. Three glycerol molecules and three fatty acid molecules
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Fatty acids are long, straight chain carboxylic acids. A fat molecule is formed when three fatty acids molecules combine with one glycerol molecule to yield a triglyceride (another name for fat) along with three water molecules. Fats are not easily digested and are transported and stored as triglycerides.

So, the correct option is 'One glycerol molecule and three fatty acid molecules'.

Multiple choice biology food for health fats fats and their test different nutrients in food

One of the steroid for manufacturing antifertility pills obtained from Dioscorea is know as

  1. Diazepam

  2. Diosgenine

  3. Diazine

  4. Retrovaire
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dioscorea spp, commonly known as Yams belong to family Dioscoreaceae. The true Yams, belonging to the genus Dioscorea are grown throughout the wetter tropics for their stem tubers. They are important sources of food for millions of people in the tropics, especially in the south western Nigeria where they are a staple food. Dioscorea is a large genus with about 600 tropical or subtropical species. Yams constitute a cheap source of carbohydrate foods and are nutritionally better than cassava because of a higher proportion of proteins. They also contain more of vitamin C.
In recent years, wild species have been much used for the extraction of steroidal sapogenins which can be converted into cortisone, into the testosterone (male hormone) and the oestrogens as well as progesterones (female hormones). Three wild species particularly D. composita, D floribunda, D. mexicana have been used as a source material for the manufacture of oral contraceptives. In this way this genus has contributed significantly towards controlling the world population.

Multiple choice biology food for health fats fats and their test different nutrients in food

Gaucher's disease is concerned with which of the following condition?

  1. Abnormal fat metabolism

  2. Abnormal protein metabolism

  3. Abnormal carbohydrate metabolism

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gaucher disease is a rare genetic disorder characterized by the deposition of glucocerebroside in cells of the macrophage-monocyte system. The disorder results from the deficiency of the enzyme glucocerebrosidase.

Multiple choice biology food for health fats fats and their test different nutrients in food

Select the correct option:

An unknown liquid collected from a sample of peas, is added to a beaker of water and is vigorously shaken. After few minutes, water and the unknown liquid made two separate layers. To which class of biomolecules, does the unknown liquid most likely belongs?

  1. Polysaccharides

  2. Proteins

  3. Lipids

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

The term Lipid was coined by Bloor.

Lipids are the esters of fatty acid and alcohol. These are hydrophobic that is these are insoluble in water but soluble in benzene, ether and chloroform.
As these are insoluble in water when they are added with water they separate to form two layers.

So, the correct option is 'Lipids'

Multiple choice biology food for health fats fats and their test different nutrients in food

The molecule used by most animals for long term energy storage is

  1. Starch

  2. Fat

  3. Cholesterol

  4. Glycogen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The primary cellular function of fatty acids is long term energy storage. The body stores small amount of excess nutrients as triglycerides for storage. Triglycerides are efficient energy storing molecules as more energy can be stored in fat than in glycogen. Fat contains 9 kcal per gram whereas carbohydrates and protein only contain 4 kcal per gram. In other words, fat is more calorie dense so can hold a greater amount of energy in a smaller space
So, the correct answer is 'Fat'
Multiple choice biology food for health fats fats and their test different nutrients in food

A gram of butter provides more energy that a gram of sugar because

  1. Butter is an animal product

  2. Butter has more carbon-hydrogen bonds

  3. Butter is more completely absorbed

  4. Butter contains more ATP
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbohydrates which includes  sugars and starches, contain 4 calories per gram, and are considered one of the main sources of energy for the human body. Fats on the other hand give 9 calories per gram,which is approximately 2.5 times more energy than carbohydrates. Moreover, fats contain more carbon-carbon and carbon-hydrogen bonds than carbohydrates or proteins and are therefore richer in energy. 

Therefore, the correct answer is option B.

Multiple choice biology food for health fats fats and their test different nutrients in food

Cholesterol is related to

  1. Fats

  2. Carbohydrate

  3. Proteins

  4. Vitamin C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Dietary fat and cholesterol are closely related types of dietary fat (saturated and trans fat) can lead to an increase in blood cholesterol levels. Research shows that the amount and type of dietary fat can affect blood cholesterol levels. Dietary fat, especially saturated and trans fats, may raise blood cholesterol levels. High total blood cholesterol levels and LDL cholesterol levels increase risk of heart disease while lower levels reduce risk. Higher levels of HDL cholesterol help lower the risk for heart disease
So, the correct answer is 'Fats'
Multiple choice biology food for health fats fats and their test different nutrients in food

Which of the following plays a key role in absorption and distribution of fats?

  1. Lacteals

  2. Villi

  3. Secretin

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

Meats, dairy products, seeds, nuts and oils contain dietary fat which needs to be broken down to be absorbed by the system. While the bile contains bile salts that emulsifies and pancreatic lipase acts to break lipids, to be absorbed in the blood stream this goes through further breakdown process in the small intestine where lacteals found in the villi of the intestinal wall help the lipids to pass through the  lymphatic system.

Therefore, the correct answer is option A.

Multiple choice biology food for health fats fats and their test different nutrients in food

Which of the following plays a key role in absorption and distribution of fats?

  1. Lacteals

  2. Villi

  3. Secretin

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

Lipids are fat-like molecule that cannot dissolve in water. When these reach the small intestine, the enzymes present there responsible for fat digestion acts on it. The pancreatic lipase breaks lipids down, resulting in free fatty acids and monoglycerides. Further, these are resynthesized into triglycerides which enter the lymphatic capillaries and lacteals present as the finger-like projections of the villi these acts on the lipids so as to be absorbed before they enter the bloodstream.