Final answer:
The statement is true; the distal convoluted tubule does contact the afferent and efferent arterioles at the juxtaglomerular apparatus.
Step-by-step explanation:
The statement "Portion of the distal convoluted tubule curves upward and contacts the afferent and efferent arterioles" is true. The initial part of the distal convoluted tubule (DCT) indeed comes into direct contact with both the afferent and efferent arterioles at the point where they enter and leave Bowman's capsule. This area is known as the juxtaglomerular apparatus (JGA), and the contact is specifically with a structure in the DCT's wall called the macula densa. The macula densa monitors the fluid composition and flow and releases paracrine signals in response to changes in Na+ concentration and fluid movement within the distal convoluted tubule.