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SSLC EXAM TIPS BIOLOGY FOCUS AREA BASED MODEL QUESTIONS AND ANSWERS

SSLC biology

  1. Complete the table.
Proteins required for treatment Disease symptoms
…………………………………. Viral diseases
Insulin ……………………..
Endorphin Pain

 

  1. Give the scientific name of the causative organism of rat fever.
  2. Name the nitrogen base absent in RNA and present only DNA.
  3. Define a nerve.
  4. Identify the relation and complete the second pair.

Theory of natural selection – Darwin

Mutation theory       – ………………….

  1. Among the following which hormone is not secreted by the adrenal gland?

Aldosterone, epinephrine, cortisol, vasopressin.

  1. What are genetic scissors? Give an example.
  2. Tabulate the statements given below appropriately.
  3. a) Ligaments relax.
  4. b) Ciliary muscles relax.
  5. c) Curvature of the lens decreases.
  6. d) Focal length decreases.
While viewing distant objects While viewing near objects
   

 

  1. ’Excessive production of thyroxine leads to goitre’ . Evaluate this statement.
  2. The box contains the symptoms of a disease that affects the nervous system.
Loss of body weight, Irregular movement of muscles, Shivering, Profuse salivation

 

  1. a) Identify the disease.
  2. b) What is the cause of the disease?

 

ANSWERS

1.

Proteins required for treatment Disease symptoms
Interferon Viral diseases
Insulin Diabetes meelitus
Endorphin Pain

 

  1. Leptospira
  2. Thymine
  3. Group of Axons or nerve fibers
  4. Hugo de vries
  5. Vasopressin
  6. The enzyme used to cut genes is called genetic scissors.

Example: Restriction endonuclease

  1. While viewing distant objects -b, c

While viewing near objects      – a, d

  1. The statement is wrong. The excessive production of thyroxine leads to hyperthyroidism. The absence of iodine obstructs the production of thyroxine. In an attempt to produce more thyroxine, the thyroid gland enlarges. This condition is called goitre.
  2. a) Parkinson’s disease.
  3. b) Destruction of specialised ganglions in the brain. Production of the neurotransmitter called dopamine decreases.

 

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