If the half-life of a decaying isotope is 10 years, which statement is true after 10 years?
A. There are more daughter nuclei than parent nuclei in a sample.
O B. There are more parent nuclei than daughter nuclei in a sample.
O C. The relative numbers of atoms cannot be determined.
O D. The numbers of parent nuclei and daughter nuclei in a sample are
equal.

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia