Metacognitive Knowledge and Critical Thinking Biology 11^th of Public Senior High School in Bogor

The research aims to find out the profile of students level of knowledge, especially in metacognitive knowledge and critical thinking skills eleventh grade students public senior high school in Bogor City on biology subjects. This research used survey method in descriptive research. The population used were all students of eleventh grade students, the sampling technique was used multistage random sampling. Data collection was carried out with test and non-test techniques, then data would be analyzed using descriptive. Descriptive analysis is used to find out metacognitive knowledge and critical thinking skills student. Based on the results obtained from metacognitive knowledge and critical thinking students on biology subject in the low category. Between aspect of Cognition Knowledge and Cognition Regulation is not significantly different, namely 71.95 and 71.48. Metacognitive results show that metacognitive knowledge is in line with critical thinking skills students.