Biology class. Must cite work, must be 250 words. YouTube URL: http://www.youtube.com/watch?v=rjza24Oyalc Dieters often talk about their metabolism. What is metabolism? Catabolism? Anabolism? Total metabolic rate (TMR)? Basal metabolic rate (BMR)? Is having a higher metabolic rate a good thing? Does a high metabolic rate promote aging? What factors contribute […]

1. What is Knudson’s Multistep Cancer Model? How does it explain that some people have a “predisposition” to cancer?2. How do tumors evolve?3. Cancer genes fall into 2 catagories. What are they?4. How can viruses cause cancer?5. What are Cyclin-dependent kinases and how are they related to cancer?6. What’s the […]

1. The common ancestor of all the tetrapod vertebrates had four limbs with a similar skeletal structure to thatseen in many vertebrates today. Considering this, in what sense are the arms of humans homologous to thewings of a bird? 2. The green algal ancestors of plants existed in aquatic habitats, […]

A certain culture of the bacterium Streptococcus A initially has 10 bacteria and is observed to double every 1.5 hours. (a) Find an exponential model (b) Estimate the number of bacteria after 34 hours. (Round your answer to the nearest whole number.) (c) After how many hours will the bacteria […]