Tag: bio-chemistry
Questions Related to bio-chemistry
Which reserve food is consumed by man during starvation:
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Fat
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Protein
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Glycogen
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Vitamin
Starvation is defined as a severe deficiency in calorie energy intake needed to maintain human life.
Which of the following break down the food into the simpler form that the body can use?
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Digestive juice
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Teeth
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Water
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None of the above
The digestive juices consist of saliva, gastric juice, pancreatic juice, intestinal juice and bile. They help in break down of complex food into simpler building block components that can easily be absorbed by the body. These reactions occur outside the cells lining the gut.
Most digestion and all absorption of food take place in the :-
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small intestine
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large intestine
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stomach
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caecum
Pepsin is the chief digestive enzyme in the stomach that stomach that breaks down proteins. Cells produce pepsinogen that is produced to act on mucus by epithelial cells of the stomach that helps to protect the lining of the stomach from corrosive hydrochloric acid and pepsin. And the absorption is done in small intestine.
Which part of the body contains teeth?
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Buccal cavity
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Body cavity
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Both A and B
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Tooth cavity
The mouth leads to the buccal cavity or oral cavity. The oral cavity has a number of teeth and a muscular tongue. Teeth help in mastication of food when tongue helps in mixing of food with saliva.
The process of taking in food from the environment is called
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Ingestion
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Digestion
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Assimilation
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Nutrition
- Ingestion is the consumption of a substance by an organism.
- In animals, it normally accomplished by taking in the substance through the mouth into the gastrointestinal tract, such as through eating or drinking.
- In single-celled organisms, ingestion can take place by taking the substance through the cell membrane. Hence, The process of taking in food from the environment is called ingestion.
In the buccal cavity, food is broken down by the teeth of
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Upper jaw only
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Lower jaw only
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Both A and B
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Tongue
The tongue is a muscular structure that cannot break down food. The food is broken down by the teeth of the upper jaw and lower jaw. Teeth is a hard part of the mouth that has a hard chewing surface covering made up of an enamel which helps in the mastication of food.
The fluid secreted in the mouth for partial breakdown of food is called as
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Gastric juice
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Pancreatic juice
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Saliva
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Hormone
Saliva is present in the buccal cavity. It helps in lubricating and adhering the masticated food particles into a bolus.(mass of food) has salivary amylase that hydrolyzed 30% of starch into maltose. Hence, it helps in particle digestion of food.
A bolus is
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A mass of crushed food moistened with saliva
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The semisolid material resulting from partial digestion in the stomach
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The milky emulsified fat absorbed from small intestine
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Indigestible materials that help in movement and absorption of food
A bolus is a mass of crushed food moistened with saliva.
Which of the following is a phosphoryalting unit?
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Oxysome
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Vaculoes
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Peroxisome
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Mitochondria
Oxysomes are found in inner mitochondrial membrane and also called ad $F _1$ or elementary particles. It contains enzymes ATP synthase responsible for synthesis of ATP. They act as phosphorylating unit.
Which of the following organ has single membrane?
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Nucleus
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Cell wall
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Mitochondria
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Sphaerosomes
Spherosomes are membrane covered small spherical organelles which synthesize and store fats. They are covered with a single half unit membrane.