Biology, 10.07.2019 14:00, lovebrain123
There is compelling evidence that today’s mitochondria and chloroplasts were once primitive bacterial cells. this evidence is described in the endosymbiotic theory. symbiosis occurs when two different species benefit from living and working together. when one organism actually lives inside the other it's called endosymbiosis. in the 1960's, a number of scientists had proposed that eukaryotic cells evolved when one bacterium (a prokaryote) engulfed another and the two began living together. over many generations, and through many smaller changes, the engulfed cell evolved into an organelle, like the mitochondrion. according to this idea, mitochondria look and act so much like bacteria because they once were bacteria. all but one statement below is further evidence in support of the endosymbiosis theory. that is a) nuclear dna is bundled up in linear strands. b) mitochondria have their own circular dna genome. c) bacterial dna is capable of directing protein synthesis and enzyme production. d) mitochondria are more closely related to bacterial cells than the eukaryotic cells in which they reside.
Answers: 1
Biology, 21.06.2019 22:00, chloerodgers56
An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?
Answers: 3
Biology, 22.06.2019 05:10, lilmsnyah
Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla
Answers: 3
There is compelling evidence that today’s mitochondria and chloroplasts were once primitive bacteria...
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