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Q1. Human babies and hibernating or cold-adapted animals are able to maintain body temperature (a process called thermogenesis) due to the presence of brown fat. Brown fat has a high concentration of mitochondria. The mitochondria in them have a protein called thermogenin, which allows the flow of hydrogen ions through an inner mitochondrial membrane (bypassing the ATP synthase). Based on this and your understanding of cellular respiration, propose a mechanism by which brown fat helps keep animals warm.
Q2. Animal cells are permeable to water and urea but NOT to sucrose. At first, inside of a cell contains 1 M sucrose and 1 M urea and the outside 1 M sucrose and 2 M urea. After system reaches equilibrium, what changes are observed?
The pH of the inner thylakoid space had been measured, as have the pH of the stroma and the cytosol of a particular plant cell. Why will this cause the pH in the thylakoids to be lesser than the pH in the stroma.
Chooses the statement that best describes a buffer. A buffer prevents pH of a solution from changing while an acid or base is added.
What advantages do the O-Scale System and the Canadian Physical Activity, Fitness and Lifestyle Approach-Health Body Composition Assessment procedure has in evaluation to percent body fat predictions from skin folded measurements, when used in indivi..
Organize the genotype in the table, define the origin (parental, single cross-over progeny and double-crossover progeny) and find out the order of the genes on the chromosome.
Monarch butterfly populations are found east and west of Rocky Mountains. How can DNA fingerprinting technology be used to establish that they constitute one breeding population or two separate breeding populations.
Mimulus lewisii and Mimulus cardinalis are two plants that occupy the same habitat but do not interbreed in nature. Though, they can be readily crossed in the laboratory to produce fertile offspring. Which is a likely reason that prevents interbreedi..
The most significant probable cause of this temporary apnea is decreased activity of the what. what is the probability that the next child would be a girl.
How various kilograms of diatoms are needed to build 1 metric ton (1000kg) of blue whale. Give details how filter feeding by blue whales enables them to grow so large.
Explain at least one historical extinction with parallels to the extinction threats facing the bog turtle. When allosteric effector X binds to enzyme #1, enzyme stops working. However, the speed of reaction can be altered by adjusting the concentrati..
Blood glucose was monitored weekly for all mice. After five weeks, there was no change in average body weight between groups.
The results of these experiments point to that plants can be genetically transformed for resistance to virus disease development. What is an expected outcome of a cross between a homozygous recessive woman and a man with hypophosphatemia.
Which of the next statements is untrue of the light reaction in photosynthesis.
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