Final answer:
The first part of the renal tubule is indeed the coiled proximal convoluted tubule, making the answer to the student's question true. Regarding the false statement about the nephron, the collecting duct does not empty into the distal convoluted tubule, which is the incorrect statement.
Step-by-step explanation:
The student has asked whether the first part of the renal tubule is the coiled proximal convoluted tubule. The answer to this question is true. The renal tubule can be divided into several parts based on their function and location. After filtration occurs in the glomerulus, the filtrate enters the proximal convoluted tubule (PCT), which is the first segment of the renal tubule. From there, it continues into the loop of Henle, which includes both descending and ascending limbs, then to the distal convoluted tubule (DCT), and finally into the collecting ducts, which lead to the renal pelvis.
As for the question regarding which statement about the nephron is false, the answer is 'a'. The collecting duct does not empty into the distal convoluted tubule; rather, it collects urine from multiple nephrons and carries it towards the renal pelvis. The remaining options, 'b,' 'c,' and 'd,' are all correct information related to the structure and function of the nephron.