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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?
Does anyone know how to solve this question? I've been trying butcan't seem to get it right. If anyone could help me I would greatlyappreciate it.
Meiosis is duplication-division-division. Could a cell that underwent asexual reproduction by normal mitosis also undergo a variation of sexual reproduction, producing gametes by halving its chromosomal number by simply dividing once (without chro..
After fiddling with the simulation program to see how it works, restore all parameters to their default settings.
how does the adaptive immune system remember its past victories.
What is a "Holliday Structure"? Describe the differentially resolved heteroduplexes and recombinants.
Describe how the genetic message is transferred from DNA to the site of protein synthesis. Be specific.
1) Identify the articulation site that allows us to nod our head "yes". choice (A) or (B) (A) Occipital bone - axis (B) Occipital bone - atlas Identify the articulation site that allows us to rotate our head.
What bacteria cause botulism and lock-jaw (tetanus)? What are their characteristics? How have these diseases been controlled?
Assume you hypothesize that an animal with a mutation that affects conversion of the b form of glycogen synthase to the a form could not produce glycogen at functional levels.
In prokaryotic genome replication and cell division a battery of enzymes copies the DNA of each strand until the entire circle is copied. After the genome has been replicated.
Why is the immune system so highly conserved, as other physiological systems are more specially adapted to our mammalian ancestry or hominid roots.
A 10 year old girl lacerates her thumb picking up broken glass in the kitchen. Four hours later, the wound appears red and swollen. Compared to granulation tissue, the scar tissue that forms in this patient's hand will contained more of which of t..
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