DNA is composed of repeating structural units called . is the five-carbon sugar found in DNA. 3 components of a nucleotide are labeled. Part A is a phosphate with 1 double-bond and single-bonds to 3 Oxygen molecules. Part B is a sugar with 5 carbon molecules. Part D is made up of nitrogen molecules.

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.

Will mark brainliest. (20 points) many have pigments structures known as eyespots that detect direction of light. a. b. archaebacteria c. protists d. none of the above

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells