Mix tomatoes, tomato paste, water, sugar, basil, garlic powder, oregano, salt and red pepper in large saucepan. Bring to boil on medium-high heat. Reduce heat to low; simmer, uncovered, 20 minutes, stirring occasionally.
Meanwhile, cook pasta as directed on package, adding shrimp during last 3 minutes of cooking. Drain. Return pasta and shrimp to saucepot.
Pour tomato sauce over shrimp and pasta. Toss gently to coat well. Serve immediately with shredded Parmesan cheese, if desired.