Tag: diseases and toxic substance

Questions Related to diseases and toxic substance

Which of the following statements is not true for cancer cells in relation to mutations?

zoology important and common human diseases diseases caused by changes in lifestyle diseases and toxic substance non-infectious diseases

  1. Mjutations in proto-oncogenes accelerate the cell cycle

  2. Metations destroy telomerase inhibitor

  3. Mutations inactive the cell control

  4. Mutations inhibit prdduction of telomerase

Show answer
Correct Option: A

Which one is not property of cancer cells 

zoology important and common human diseases diseases caused by changes in lifestyle diseases and toxic substance non-infectious diseases

  1. They show contact inhibition

  2. Divide in uncontrolled manner

  3. Compete with normal cells for vital nutrients

  4. Do not remain confined to area of formation

Show answer
Correct Option: A
Explanation:
  • Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. 
  • All cancer cells show the five properties. They are: 
  1. Continuous growth and division. 
  2. Avoidance of programmed cell death. 
  3. Competes with normal cells for vital nutrients.
  4.  Promoting blood vessel construction. 
  5. Invasion of tissue and formation of metastases. Hence, the property which cancer cells does not have is they show contact inhibition.
 So, the correct answer is 'They show contact inhibition'.

Which one of the following techniques is safest for the detection of cancers?

zoology health and diseases diseases caused by changes in lifestyle diseases and toxic substance non-infectious diseases non infectious diseases categories of diseases

  1. Radiography (X-ray)

  2. Computed tomography (CT)

  3. Histopathological studies

  4. Magnetic resonance imaging (MRI)

Show answer
Correct Option: A

Proliferation of cancer cells is not limited because of:

zoology important and common human diseases diseases caused by changes in lifestyle diseases and toxic substance non-infectious diseases

  1. Differing surface proteins

  2. Differing cholesterol level

  3. Aberrant chromosomal complement

  4. Both A and C

Show answer
Correct Option: D
Explanation:

The difference between normal tissues and cancer tissues is the rate of metabolism.  In normal cells, hundreds of genes intricately control the process of cell division. Normal growth requires a balance between the activity of those genes that promote cell proliferation and those that suppress it. However, in the case of cancer cells, they involve abnormal growth. Cells become cancerous after mutations accumulate in the various genes that control cell proliferation. Hence proliferation of cancer cell is not limited because of differing surface proteins and aberrant chromosomal complements. Thus, the correct answer is option D.

Carbohydrates are generally called as saccharides.

evs food trends need for nutrients nutrition and its deficiency nutrition and its need balanced diet and malnutrition balanced and unbalanced food digestive disorders diseases caused by changes in lifestyle diseases and toxic substance health and its maintenance

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Carbohydrates (also called saccharides) are molecular compounds made from just three elements: carbon, hydrogen and oxygen. Monosaccharides (e.g. glucose) and disaccharides (e.g. sucrose) and polysaccharide (starch). They are often called sugars.

So, the correct option is 'True'.

The food which includes the essential nutrients in a definite quantity is termed as balanced diet.

evs food trends need for nutrients nutrition and its deficiency nutrition and its need balanced diet and malnutrition balanced and unbalanced food digestive disorders diseases caused by changes in lifestyle diseases and toxic substance health and its maintenance

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Nutrients that we obtain through food have vital effects on physical growth and development, maintenance of normal body function, physical activity and health. Nutritious food is, thus needed to sustain life and activity. Our diet must provide all essential nutrients in the required amounts. Requirements of essential nutrients vary with age, gender, physiological status and physical activity. Dietary intakes lower or higher than the body requirements can lead to under nutrition (deficiency diseases) or over nutrition (diseases of affluence) respectively. So, the correct option is 'True'.

Protein and energy deficiency in food result in which disorder.

biology food and human health balanced diet and malnutrition balanced and unbalanced food digestive disorders diseases caused by changes in lifestyle diseases and toxic substance health and its maintenance

  1. Kwashiorkor

  2. Marasmus

  3. Diarrhoea

  4. Dysentary

Show answer
Correct Option: A

A patient is generally advised to specially take exposure to sun to prevent:

biology food and human health balanced diet and malnutrition balanced and unbalanced food digestive disorders diseases caused by changes in lifestyle diseases and toxic substance health and its maintenance

  1. Kwashiorkor

  2. Rickets

  3. Anaemia

  4. Scurvy

Show answer
Correct Option: A

Observe the given statements.
(i) Protein deficiency in diet leads to kwashiorkor disease.
(ii) Deficiency of only calories leads to marasmus disease.

biology food and human health balanced diet and malnutrition balanced and unbalanced food digestive disorders diseases caused by changes in lifestyle diseases and toxic substance health and its maintenance

  1. i and ii are true

  2. i is true and ii is false

  3. i is false and ii is true

  4. i and ii are false

Show answer
Correct Option: A

Inadequate protein intake leads to Kwashiorkor. The subsequent edema is most closely related to inadequate synthesis of which protein?

biology food and human health balanced diet and malnutrition balanced and unbalanced food digestive disorders diseases caused by changes in lifestyle diseases and toxic substance health and its maintenance

  1. Gamma globulin

  2. Glucagon

  3. Insulin

  4. Albumin

Show answer
Correct Option: D
Explanation:

Kwashiorkor is associated with a decrease in serum proteins. The drop is particularly striking in liver-synthesized protein i.e. albumin ( < 2 g/dl against 3-4.5 g/dl ) and lipoproteins. The protein synthesis in liver is dependent upon the supply of alimentary amino acids after each meal. So later if the protein deficiency persist there is again a drop in the level of albumin synthesis which can be noticed immediately.
The ingestion of protein rich food can control kwashiorkor. The treatment can be monitored by measuring plasma albumin concentration, disappearance of edema and gain in body weight.