Biology, 20.08.2019 07:20 arianaaldaz062002
Theodor schwann and matthias schleiden were major contributors to the cell theory as we know it. in 1839 schwann published a book including a summary of his observations into three conclusions about cells: 1. the cell is the unit of structure, physiology, and organization in living things. 2. the cell retains a dual existence as a distinct entity and a building block in the construction of organisms. 3. cells form by free-cell formation, similar to the formation of crystals (spontaneous generation). which one of schwann's statements is no longer accepted as truth? a) cells are found in both living and nonliving entities. b) cells are distinct identities, not just building blocks. c) cells form via free cell formation from existing cells only. d) cells come from pre-existing cells, not from free cell formation.
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Biology, 21.06.2019 20:00
Here's one way to follow the scientific method. place the missing steps in the correct position in the process.
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Biology, 22.06.2019 01:30
Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?
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Biology, 22.06.2019 20:30
The hershey and chase experiments involved the preparation of two different types of radioactively labeled phage. which of the following best explains why two preparations were required? a. the bacteriophage used in the experiments was a t2 phage. b. it was necessary that each of the two phage components, dna and protein, be identifiable upon recovery at the end of the experiment. c. each scientist had his own method for labeling phage, so each conducted the same experiment using a different isotope. d. establishing the identity of the genetic material required observation of two phage generations.
Answers: 2
Biology, 22.06.2019 22:10
The long-term increase in the average temperature on earth is referred to as _[blank]_. global cooling ozone cooling global warming ozone warming
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Theodor schwann and matthias schleiden were major contributors to the cell theory as we know it. in...
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