temperature using δ18O of planktonic (surface floaters) foraminifera back through time at one site in the North Atlantic. In addition to temperature, what other two factors will you have to consider that may have a significant impact on the δ18O signal through time at this site?
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You are interested in reconstructing temperature using δ18O of planktonic (surface floaters) foraminifera back through time at one site in the North Atlantic. In addition to temperature, what other two factors will you have to consider that may have a significant impact on the δ18O signal through time at this site?
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- The amoeba Pelomyxa palustris is a single-celled eukaryote with nomitochondria, but it contains symbiotic bacteria that can live in thepresence of oxygen. How does this observation support theendosymbiont theory?Scientists examined the interactions between bacteria and two species of protozoa, Uronema sp. and Euplotes sp., found in the bays and inlets of coastal California. An experiment was designed that modeled the ecosystem and measured the amount of bacteria and carbon that were ingested by the protozoal species, as shown in the data table. Bacteria with labeled glucose were incubated with these two species of protozoa. The number of bacteria, carbon ingested, and carbon exuded from the protozoa were then measured. Which of the following explains how the difference between ingested and exuded carbon relates to the energy in the aquatic ecosystem? Protozoa Bacteria Ingested (x107 l‒1h‒1) Bacterial Carbon Ingested (ngC l‒1h‒1) Exuded Bacterial Carbon (ngC l‒1h‒1) Uronema sp. 172.20 34,460 3,067 Euplotes sp. 50.82 10,170 305 The protozoa hydrolyzed the ingested carbon, resulting in an increase in energy within the ecosystem. The protozoa decomposed…In the early 1930s, G. F. Gause carried out a series of experiments using two species of ciliated protists (Paramecium), which are single-celled eukaryotic protozoans. The protists were cultured together and separately, with the bacteria being the single food source. The results are shown in the figure below. (a) Based on figure, identify and explain the interaction that is taking place between P. caudatum and P. aurelia. (b) Clam shrimp, a natural predator to P. caudatum, is introduced to the culture containing both P. caudatum and P. aurelia after 24 days. Predict the impact that the clam shrimp will have on the culture and the populations. Justify your prediction.
- You have discovered a new species aquatic protist that is a primary producer. It cannot swim on its own. It appears to be resistant to physical damage from wave action due to the presence of a glass-like wall. Which of the following organisms would this organism be most like? A) diatom B) dinoflagellate C) apicomplexan D) red algaWhy is it important to monitor plankton? What measurements are recorded when collecting water samples for the plankton monitoring community science program and what instruments are used to collect those measurements? Why is it important for all plankton monitors to use the sample protocol for both sample collection and identification? What are the ways you can control the amount of light passing through your specimen?Dinoflagellates are unicellular, marine protists. Dinoflagellates are bioluminescent, but only at night. During the day, they carry out photosynthesis similar to other autotrophs. At night, however, they bioluminesce every time they are disturbed. They are often seen in the wakes of ships at night. While the reason for this bioluminescence is not fully understood, many scientists concur that it is a form of self-defense. If small fish begin to feed upon the protists, the protists will begin to bioluminesce. These flashes of light in the dark water can alert larger fish and draw them towards the small fish, upon which they prey. By making the small fish vulnerable, the dinoflagellates are able to protect themselves. Based on the information above, a researcher decides to design an experiment in which she is testing how long it takes for dinoflagellates to recover after different amounts of disturbance. She maintains 10 containers of dinoflagellates with similar temperature, salinity and…
- Dinoflagellates are unicellular, marine protists. Dinoflagellates are bioluminescent, but only at night. During the day, they carry out photosynthesis similar to other autotrophs. At night, however, they bioluminesce every time they are disturbed. They are often seen in the wakes of ships at night. While the reason for this bioluminescence is not fully understood, many scientists concur that it is a form of self-defense. If small fish begin to feed upon the protists, the protists will begin to bioluminesce. These flashes of light in the dark water can alert larger fish and draw them towards the small fish, upon which they prey. By making the small fish vulnerable, the dinoflagellates are able to protect themselves. Based on the information above, a researcher decides to design an experiment in which she is testing how long it takes for dinoflagellates to recover after different amounts of disturbance. She maintains 10 containers of dinoflagellates with similar temperature, salinity and…What are some constraints shared by all organisms? (select all those that apply). a) withstanding gravitational force b) functioning in a 24 hr light dark cycle c) molecules moving by diffusion d) effects of scaling as organisms increase in sizeComplete Table 1by doubling the number of bacteria (Clostridium sp.) and diatoms (Chaetoceros sp.) every 30 minutes and 60 minutes, respectively, and by writing the log10 of this number in the appropriate columns with the results , Draw a graph showing the growth (N) of the populations of both species from time = 0 (also written as t0) to time = 310 (t310) minutes. Draw both populations on the same graph. NB: It will be necessary to plot Chaetoceros sp. on a second y-axis. Label the axes and provide a suitable legends.
- * 0O 100 v Ao you would use to identify this species (what features would you use personally to ID). ^タヘ三 臣ヘ= 5. View the protists blood parasites (Trypanosoma cruzi, Trypanosoma brucei, and Plasmodium vivax). Which of these species is more likely to cause the most human issues (in terms of number of people with the disease)? What is one of the most likely ways to keep from being infected by any of these blood parasites? Explain. 6. What are slime molds? 7. Identify the organisms below. Next to each name you ID the organism as, give 2 features that helped you come to that determination. Name of organism: a. Features used to ID: 771 words English (U.S.) Text Predictions: On DEOL 8. ca上門后 MacBook Air 71 64 000 F4 F5 F6 F8 F2 F3 23 2$ 5. 6. 4. R.Describe at least one adaptation that allows a) planktonic organisms such as diatoms or jellyfish to stay in the photo zone (where light penetrates the water), and b) marine birds to thrive in the salt marsh/tidal environment.What specialized intracellular components would increase the fitness of prokaryotes dwelling in these particular microenvironments? Name at least one for each example. a. Gut-inhabiting enterobacteria b. Photosynthetic cyanobacteria in damp soil