Question

i. Describe in detail how SNARE proteins and other accessory proteins may help intracellular vesicles to be directed to the correct destination. 2. Discuss a model on how Na - K transporter may function. How is the proper functioning of this pump tied to import of glucose into a cell? 3. Discuss the how oxygen and carbon dioxide is transported in a red blood cell. Discuss what happens regarding the fate of these gases in both the lungs and the tissues. (The ppt slides only describes transport of CO2, you will need to find thoe transport of oxygen part OUTSIDE of the textbook. Feel free to use any A&P textbook, Wikipedia or any other online resources. You will only get maximum 7/10 for the content score if you only describe CO, transport)

Answer 1

If you post more than 1 question, as per HOMEWORKLIB RULES I have to solve only 1 question.

ques2:

it consists of 2 steps-

1) binding of $3Na^{+}$ions and ATP to a carrier protein inside the cell causes change in shape of protein resulting in $3Na^{+}$ions to move out of the cell.

2) when $2k{+}$ions bind to the carrier proteins on the outside of the cell this causes second change in shape of protein resulting in $2k{+}$ions to move into the cell.

IMPORT OF GLUCOSE INTO CELL-

glucose diffusion into the cell occurs through facilitated diffusion and cannot occur though simple diffusion because glucose molecule is too large.

also glucose is transported by glucose transporter (GLUT) across intestinal epithelium and into RBCs , muscles and adipose tissues in presence of insulin.