A scientist is studying an organism under a microscope. The organism is eukaryotic, unicellular, and contains chloroplasts that allow
it to perform photosynthesis.
The organism described above could most likely be classified as a
A. bacterium
OB. protist
OC. plant
OD. fungus
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Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes