Tag: minerals and vitamins

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Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

Amoeba engulfs food by the process of

  1. Photosynthesis

  2. Phagocytosis

  3. Respiration

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

Amoeba obtains the food through phagocytosis process. Since, Amoeba has no mouth, it takes the food into it's body by means of pseudopodia, which completely enclose the particle of food, that is enveloped in vacuoles. Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the Sun, into chemical energy that can be later released to fuel the organism's activities. In physiology, respiration is defined as the transport of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction. Meiosis is a process of cell division in eukaryotes characterized by: two consecutive divisions: meiosis I and meiosis II. 

Therefore, the correct answer is option B.

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

Amoeba procures food through

  1. Proboscis

  2. Pseudopodia

  3. Cilia

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

Pseudopods which translates to "false feet" are temporary cytoplasm-filled parts of the cell wall that are able to change their form in order to move. They are used in some eukaryotic cells to move around or to eat. Most cells that do this are called as amoeboids. The amoeba is a common example. Proboscis, cilia and tongue are absent in amoeba. 

Therefore, the correct answer is option B.

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

The inner lining of the stomach secretes

  1. Mucous

  2. Hydrochloric acid

  3. Digestive enzymes

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

The stomach is the main food storage tank of the body. If it were not for the stomach’s storage capacity, we would have to eat constantly instead of just a few times each day. The stomach also secretes a mixture of acid, mucus, and digestive enzymes that helps to digest and sanitize our food while it is being stored. 

Therefore, the correct answer is option D.

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

Pseudopodia are

  1. False feet developed in some unicellular organisms

  2. Small hairlike structures present on the unicellular organisms

  3. Long, tube like structure coming out of the mouth

  4. Suckers which are attached to the walls ofintestines
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pseudopods which translates to "false feet" are temporary cytoplasm-filled parts of the cell wall that are able to change their form in order to move. They are used in some eukaryotic cells to move around or to eat. Most cells that do this are called as amoeboids. The Amoeba is a common example. Proboscis, cilia and tongue are absent in Amoeba. 

Therefore, the correct answer is option A.

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

Digestion within a digestive tract is

  1. Incomplete

  2. Extracellular

  3. The same as absorption

  4. Intracellular
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Extracellular digestion is a process in which saprobionts feed by secreting enzymes through the cell membrane onto the food.
  • The enzymes catalyze the digestion of the food into molecules small enough to be taken up by passive diffusion, transport or phagocytosis.
  • Intracellular digestion is a form of digestion wherein the breaking down of materials into smaller components takes place inside the cell.
  • An incomplete digestive system has only one opening. The food goes in the same opening that the waste comes out.

Therefore, the correct answer is option B.
Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

Which begins at the buccal cavity and ends at the anus. The canal can be divided into compartments

  1. Six

  2. Three

  3. Four

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

The digestive system consists of the alimentary canal or digestive tract and two accessory glands, the liver and the pancreas. The digestive tract can in turn be divided into oral cavity, pharynx, stomach, small intestine, large intestine and anus. 

Therefore, the correct answer is option A.

Multiple choice bio-chemistry minerals minerals and vitamins nutrition and diet role of various nutrients

Which group of element is not essential for a normal plant?

  1. Potassium, calcium, magnesium

  2. Iron, zinc, manganese, boron

  3. Lead, platinum, iodine

  4. Magnesium, iron, molybdenum
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lead, platinum, and iodine are not considered essential nutrients for the normal growth and development of plants, unlike the others listed which are micronutrients or macronutrients.