Question

Question 6 1 pts Type I diabetes mellitus is caused by: reduced insulin response of target cells due to changes in insulin receptors. insufficient dietary supply of iodine. immune system destruction of pancreatic alpha cells. immune system destruction of pancreatic beta cells. Question 7 1 pts According to the sliding-filament model, muscle contraction occurs when: thick filaments repel other thick filaments, pushing the sarcomeres together and shortening the muscle fiber. thin filaments repel thick filaments, producing no overlap between the filaments. thin filaments interact with and slide past thin filaments, producing more overlap between the filaments. thick filaments interact with and slide past thick filaments, producing more overlap between the flaments. o thin filaments interact with and slide past thick filaments, producing more overlap between the filaments. 1 pts Question 8

Answer 1

6) d) immune system destruction of beta cells

Explanation : Immune system recognize self and non self components . It is programmed to attack only foreign antigens and give response against them but sometime immune system lose this ability to differentiate and they start attacking self cells. Exactly same happens in Type 1 diabetes mellitus, here due infection such as viral leads to immune response and this immune response get error prone and start destroying self pancreas beta cells.

7) a) thick filament repels thick filament pushing sarcomere together and shorting the muscles.

Explanation: Thick filament slide past thin filament to produce muscle contraction. With advancement , it was said that contraction mechanism is due to cross bridge formation that forms when myosin head attaches to actin filament forming a protein complex.

If it was helpful give a thumps up