Question

3. Humans have disrupted the cycling of several nutrients (C N, P, S, etc). Choose three nutrients and fill in the following table. (3pts) 0.5pt per middle or right column Nutrient Human disruption Function of the nutrient at the cellular level Carbon Phosphorous Nitrogen 4. Climate change and other anthropogenic impacts on the ecosphere are predicted to impact NPP. Fill out the following table. (3 pts) Change in climate Effect on NPP? Rationale Increased N deposition Drought Decreased cloud cover Two different species of catfish, Twig (Rineloricaria lanceolate) and Bristlenose (Ancistrus temminckii), eat algae. Both species take in 4000 J of energy from eating algae. Both excrete 2500 of feces, but Twig catfish live in a high current area where they need to expend more energy because they are swimming. Therefore, it takes this catfish 1250 J of energy for respiration, and they only can add 250 J towards growth. Bristlenose catfish live in a calm lake where they do not swim as much and can use more of their food towards growth, specifically 350 J. What is the production efficiency of cach fish? (1 pt) 6. Suppose that T. W.Engelmann (1882) found that the pigments that drive photosynthesis in algae absorb most strongly at wavelengths of 450nm and 560 nm. What color do you think these algae might be? Explain. (1 pt) Itll be red-orange because the color that the algae absorbs, which is green-ish, it will not show But it will show the color that it is reflecting which is red-orange. 7. Suppose an inhibitor of the enzyme NADPH oxidase is introduced into a chloroplast, and the Calvin cycle stops functioning. How would this affect the light reactions? (1 pt)

answer and explain 3,4,5&7 please. help is much appreciated. just some deeper thinking and application into biology concepts

Answer 1

As per our honor code, we are authorized to answer only one question at a moment. So, we are answering the first question (question number 3). Please re-upload the rest of the questions separately.

Function of the nutrient at the cellular Nutrient Human level disruption Carbon fossil fuels are the main reservoirs I carbon sources are required for the for Carbon in Carbon cycle. fossil Cell proliferation and progression. fuels mining from the earth crust Carbon sources and oxygen are most and their ure in generating important for the generation of ATP electricity by humans has resulted and building blocks in the cells. in the release of carbon in form I Carbon sources are also used for the of Co2. into atmosphere in large maintenance intracellular redox amount. Other human activities status. such as deforestation and clearing the of vegetation, results in lesser carbon sinks. These human activities exacerbating the Change in carbon cycle.

Phosphorous Introduction of synthetic function of Phosphorous nutrient fertilisers and their commercial ) is in the formation of teeth use are the main contributors and bones. git plays role to humans' influences on the in how the cells of body uses . Phosphorous cycle. Plants fats and Curbohydrates. can not utilise all the phosphate , gt is used for the growth, fertilisers, which results in the maintenance and repair of of transfer phosphate the fertilisers cells. to the water boelies in that area. other human disruption of phosphate include, outflows from the sewage treatment - Plants. Nitrogen > creation of Nitrogen fertilizers, 1 gt is the most Extensive cultivation of legumes, I commonly used nutrient by the calls, sto pollution emmition from functions in protein production. industrial Plants and vehicles Necessary for cellular enzymatic are the ways of human reactions. It also used in disruption to the amount of T cell division Ice and growth. Nitrogen in the biologically available forms.