Question 1
Tendons are strong, rope-like structures that connect skeletal muscle to bone. Which of the following proteins would provide strength to a tendon?
◦ molecular chaperone
◦ albumin
◦ actin
◦ collagen
Question 2
Phospholipids make up most of the lipid part of the cell membrane. Since water exists on both the outside and inside of a cell, which of the following phospholipid arrangements makes the most sense?
◦ two back-to-back phospholipid layers with the polar heads facing out on both sides
◦ a single layer of phospholipids with the polar heads facing outside the cell
◦ a single layer of phospholipids with the polar heads facing inside the cell
◦ two back-to-back phospholipid layers with the non-polar tails facing out on both sides