While collecting pond samples, Laura found an organism she had never seen before. She brought the organism to class and studied its characteristics. Laura's observations are listed below:
1. The organism is unicellular.
II. The cell has a nucleus.
III. The cell contains chloroplasts.
IV. The cell contains mitochondria.
V. The cell has a cell wall.
Based on Laura's research, to which biological kingdom does the organism belong?
OA. Protista
OB. Fungi
OC. Plantae
OD. Bacteria

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

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.

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.