Kocayigit, HHacisalihoglu, HH2025-04-102025-04-101307-5624http://hdl.handle.net/20.500.14701/39501We study 1-type curves by using the mean curvature vector field of the curve. We also study biharmonic curves whose mean curvature vector field is in the kernel of Laplacian. We give some theorems for them in the Euclidean 3-space. Moreover we give some characterizations and results for a Frenet curve in the same space.EnglishArticle