Which of the following hormones is secreted by the Beta cell of Islet of Langerhans of Pancreas?

Which one of the following hormones increases the heartbeat in mammals?

Which one of the following hormones is essential for the uptake of glucose by cells in the human body?

In the human digestive system, which one among the following is the role of the pancreas ?

Which one of the following statements regarding bile secreted by liver is not correct?

Which one of the following is the structure of a cardiac muscle cell?