No explanation is given for this question. Let's discuss the answer together.
103.
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
A
First positive, then negative and continue to be positive
B
First negative, then positive and continue to be positive
C
First positive, then negative and again back to positive
D
First negative, then positive and again back to negative
Answer :
First negative, then positive and again back to negative
No explanation is given for this question. Let's discuss the answer together.
105.
Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements : (i) Vitamin A derivatives are formed from carotene (ii) The photopigments are embedded in the membrane discs of the inner segment (iii) Retinal is a derivative of Vitamin A (iv) Retinal is a light absorbing part of all the visual photopigments