Why does ecoli need fats?

What makes a skin cell different from a nerve cell? Why would a 7 year old get a kidney infection? What does it mean if your HCG levels are 283 at 5 weeks? Why is your stomach fat not budging even though you have been steadily losing weight from the rest of your body? Is bone cancer treatable? Where does feeding happen in a digestive system? Can people with paraplegia demonstrate a patellar reflex? What is neurons transmit signals across a? Antibodies are produced in the body and attach themselves to antigen? Where is constipation located? When can I go back to work after liver biopsy? The system is formed by spinal and cranial nerves? Why thick skin is more adapted to abrasion? Which muscles flex the thigh? What substances is the main element that the bone cells use to create a hard and resilient structure? How does a drop in the blood pressure affect urine output? How do conjoined twins of different genders go to the toilet? Is a rash caused by allergic reaction contagious? How many bones do leopards have? Is cooked tomato good for uric acid patients?