For the following problems assume 10μL plasmid DNA added to the + tube, 500μL total volume of + tube contents, and 100μL volume spread on the plate. If you got 15 transformed colonies using a product concentration of 0.10μg/μL, what is your transformation efficiency? 2. If you got 25 transformed colonies using a product concentration of 0.15μg/μL, what is your transformation efficiency?

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.

For a to be healthy, it has to have lots of different kinds of plants and animals. all of the different types of plants and animals in an ecosystem. name four types of ecosystems from those listed in the video. b) c) d) most living things live here. all living things depend on how an ecosystem like a game of sticks? why should we build new buildings on existing land? name four extinct species from those listed in the video. b) c) d) the best way to wipe out a species is to the largest ecosystem in the world is this percent of the world is covered by water. how many of all species in the world live in the ocean? list five things you can do to increase biodiversity. b) c) d) e) how many species are we losing per hour?

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?