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Q. A. An ecologist studying desert plants performed the following experiment. She staked out two identical plots that included a few sagebrush plants and numerous small annual wildflowers. She found the same five wildflower species in similar numbers in both plots. The she enclosed one of the plots with a fence to maintain kangaroo rats, the most common herbivores in the area. After two years, four species of wildflowers were no longer present in the fenced plot, but one wildflower species had increased dramatically. The unfenced control plot had not changed significantly in species composition. By means of the concepts discussed in the chapter, what do you think happened?
B. supposes that you have been chosen as the biologist for the design team implementing a self-contained space station to be assembled in orbit. It will be stocked with organisms you choose, creating an ecosystem that will support you and five other people for two years. Explain the main functions that you expect organisms to perform. List the types of organisms you would select, and explain why you chose them.
please answer the quesiton in complete and shortresponse.
A bacterial operon encodes enzymes needed to synthesize ahypothetical protein, Snk. When a second gene, mck, is mutated, nosnk is transcribed even in the presence of inducer. In the thirdgene, ops, mutation leads to constitutive Snk production. Ho..
Which of the following is associated with bilateral symmetry? A) a definite ‘head end' B) stationary life style C) lack of organs D) lack of true tissues
Thermus aquaticus is a thermophilic bacterium that grows between the temperatures of 50 and 80°C. Although the signal peptide binding groove of its Ffh M domain is lined with hydrophobic groups, only three of them are Met side chains.
Assume y ou wish to use PCR to sequence a particular gene that you have isolated. The sequencing protocol suggests that you use 3.2pmole (pico moles) of your primer in a 2 micro liter volume.
What is the ratio of normal-leaved to potato-leaved plants when you assume that p is located on chromosome 6?
Why are some bacteria resistant to the effects of penicillin? How would you genetically engineer a strain of anthrax to be resistant to penicillin?
In the lab, you will add 4uL of 1M IPTG to 4mL of bacterial culture. What is the final concentration of IPTG in the bacterial culture?
Describe what a prokaryote is and include a) a description of the genetic material and location, b) what type of organelles they have (if any), and c) if they have a cell wall, cell membrane, or both
Describe the process of the bioremediation in detail. Write down an essay on the topic of bioremediation.
Explain how temperature affects the hemoglobin saturation curve. Discuss how does temperature affect the delivery of oxygen to the tissues?
Which wavelengths of visible light carry the most energy? How does this relate to strategies for plant photosynthesis? Why was it important to mark the TLC plate with pencil?
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