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10th Class Science Life Processes Question Bank Life Processes

  • question_answer
    Gita is supposed to face an interview. During the first five minutes before the interview she experiences sweating, increased rate of heartbeat, increased respiratory rate, etc. Which of the following hormones has increased in her blood and is responsible for her restlessness?

    A) GnRH

    B) Estrogen

    C) Adrenaline     

    D) Insulin

    Correct Answer: C

    Solution :

    Adrenaline is secreted in small amount in normal situation but when a person faces stress or danger, it is secreted in large amount to prepare the body for emergency and stress condition such as facing an interview. Large amounts of adrenaline causes increase in heart beat to supply more oxygen to muscles. The breathing rate also increases due to the contraction of the diaphragm and rib muscles. Also, basal metabolic rate, blood pressure and sugar level in blood is increased. Because of its roles in emergency situations, adrenaline is also called emergency hormone.


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