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The sensitiveness of an organelle to a particular stimuli is based on the fact that how it reacts in terms of the substrate intake. In this case, stimulus is temperature and substrate is Oxygen. The graph is a parabolic graph. The maximum effect on mitochondrion seems to appear between 30-40 degrees C where enormous change in the O2 usage is seen as is evident by steepness of graph.
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- Select the statement that does NOT support the origin of excavates that lack plastids, have highly reduced mitochondria and are parasites: A. These parasites typically live in low-oxygen conditions and therefore loss of genes for plastids and mitochondria did not result in lower fitness B. The original, eukaryotic ancestors of these parasites did not engulf prokaryotes C. These parasites typically live in low-oxygen conditions, and many of their mitochondrial genes move to the nucleusWhy do scientists believe that mitochondria evolved before chloroplasts? A. because all eukaryotic cells have mitochondria but not all eukaryotic cells have chloroplasts B. because mitochondria are more efficient than chloroplasts C. because mitochondria live longer than chloroplasts D. because mitochondria are larger and stronger than chloroplasts Chrome OS WienWhich of the following statements is TRUE? a. In mammals and chickens, the first cells to ingress through the primitive groove replace the hypoblast. b. In mammals and chickens, the first cells to ingress through the primitive groove become the hypoblast. c. In chickens the first cells through the primitive streak replace hypoblas, but in mammals the first cells to ingress through the primitive groove become the hypoblast. d. In mammals the first cells to ingress through the primitive groove replace the hypoblast, while in chickens the first cells to ingress become mesoderm.
- Under the endosymbiotic theory for the origin of the eukaryotic cell. The ancestor of mitochondria and chloroplasts original became part of mutualism with a larger host cell. Which of the following best explains this mutualism? A) The mitochondria and chloroplasts provided specialized reproduction as part of the proto-germ line while the larger host cell provided energy for growth and reproduction. B) The mitochondria and chloroplasts provided gene products that could be used by the larger host cell for improved parasitization. C) The mitochondria and chloroplasts provided molecular energy in return for protection by the larger host cell. D) The mitochondria and chloroplasts produce toxins that the larger cell utilized to defend itself from other cells mutually increasing the defense of all those involved.The effect of time (hours) on the mortality (%) of three species of Chironomus larvae exposed to oxygen-free water at a temperature of 20 °C. The table shows the results of five separate experiments conducted on each species of midge.(Species are fictitious) Question 1.3. Plot a graph showing the average percent survival of each midge species (all three species on one graph) against time in oxygen-free water. Label the axes and provide a clear legend.According to your hypothesis about the relationship between temperature and the rate of cellular respiration (as temperature increases, rate of cellular respiration increases and vice versa), answer the following questions: What was the reason that you thought your independent variable would affect the dependent? That is, what cell structures do you think would be affected by the independent variable you chose? (Think of enzymes, membranes, organelles, etc.) What was the reason for the relationship you chose? That is, why did you think the independent variable would make the dependent increase or decrease? What would the results (and graph) look if they did NOT support your claim/hypothesis?
- Encode the word true if the statement is correct. If the underline word/s is incorrect, then correct the underlined word/s that makes the statement wrong by encoding the correct answer beside false. Answers must be encoded in capital letters 1. When Grammia incorrupta caterpillars are infected by a parasitoid, they show an increased preference for acidic toxins found in larval food plants, and by choosing to eat these toxic plants when infected, are able to increase survival.In which scenario would mitosis be least desirable in terms of a species' survival? Top of Form A species has little energy to devote to reproduction. A species is unable to travel far to find a mate. A species has to adjust rapidly to a changing environment. A species is preyed upon by numerous successful predators.Figure attached, you don't need any of the textbook words to figure out the answer so don't worry about the font size. A student in a course on intelligent design theory claims that the graph in part (a) shows that losing the ability to respire actually is adaptive for yeast cells living in small populations. Please read the incomplete sentence that appears immediately below, assess as possible completions the lowercase-Roman-numeral-labelled statements that follow, and click each uppercase-letter-labelled response that is presented below and completes accurately the sentence. An astute student in an evolution course would respond that i. the graph in part (a) shows that selection among mitochondria within yeast cells can lead to fixation for traits that decrease mean fitness for that yeast population. ii. the student in the course on intelligent design is wrong; the yeast cells in the small population group retained completely the ability to respire, as they otherwise would have…
- An experiment was designed to analyze the metabolic rate of several bird species. A single bird was isolated in a chamber, and the amount of respired carbon dioxide was measured for 30 minutes. During this time, the heart rate of the bird was also measured. The table shows the average amount of carbon dioxide after three trials. Based on this data, which of the following species would you predict to have the smallest body mass? A - All species will have equal masses. B - Species A will have the smallest body mass due to its heart rate being the lowest. C - Species A will have the smallest body mass due to its exhaled carbon dioxide being the lowest. D - Species D will have the smallest body mass due to its exhaled carbon dioxide and heart rate being the highest.Listed are the following characteristics or functions exhibit by organisms. For each organism in the first column of the following table, check the columns that correspond to that organisms characteristics a.)Autotrophic b.)Performs photosynthesis c.)Usually motile d.)Cell division requiring cell plate formation e.)Shows alternation of generations f.)Performs cellular respiration g.)Has mitochondria h.)Reproduces sexually and asexually i.)Can adapt and acquire immunity to pathogens j.)Heterotrophic k.)Has a structure called a brain l.)Can perform mitosis m.)Eukaryotic n.)Prokaryotic o.)Has genetic materials or DNAThe Mojave Desert of the western United States is characterized by a hot, dry climate. Scientists predict that temperatures in this region will increase by an average of 4.7° F over the next 30 years. Birds found here (like ground-dwelling roadrunners) are endotherms and have many adaptations to reduce the amount of heat absorbed into the body while active in the daytime. If temperatures increase in this area as predicted, how might the plumage (the feathers covering the body) of these roadrunners change under the influence of natural selection? 1:The plumage will likely become longer and increase heat absorption into the body. 2:The plumage will likely become darker and increase heat absorbed from the environment. 3:The plumaqe will likely become lighter and increase heat reflected away from the body. 4:The plumage will likely become thicker and increase the amount of heat trapped by the body.