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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, contained chlorophyll a and b, and had cellwalls composed mainly of cellulose. Land plants also contain chlorophyll a and b and have cell walls ofcellulose. What traits in the land plants are primitive? What trait represents divergent evolution from theancestral form?
3. The ancestors of hominids were quadrupeds, walking on four legs. Humans are bipedal. Is this characterderived or ancestral? Are the walking habits of chimpanzees primitive or advanced?
The exzyme-catalyzed conversion of a substrate at 25C has a Michaelis constant of 0.035 ml/L. The rate of the reaction is 1.15*10^-3 mol/Ls when the substrate concentration is 0.11 mol/L.
calculate the density of a 15% glucose solution.
q1. discuss the qualities of water that make it unique and why hydrogen bonds are responsible.q2. what are the
Determine what problems might invalidate our assumptions that duration and frequency of different phases of the cell cycles are directly related?
In a eukaryotic cell specialized forsecretion of hormones, which internal organelles would you expectto be particularly abundant
Calvin and colleagues determined the pathway of carbohydratesynthesis in plants by studying the incorporation of radioactivecarbon dioxide into biological compounds
Consider the differences between an animal that must survive in the arctic cold and one that lives in a hot, dry desert. Each one has adapted to their environment over evolutionary time in order to ensure survival.
How does sexual reproduction benefit the offspring in terms of genetic variation? Provide an example
q1. think of beavers digestive organ system. describe its overall roll list several of the organs in the system
List the systems that either evolved by piggybacking on the ones above or evolved to compensate for potential problems caused by the systems listed above.
You are working on corn and find that a particular locus you are studying influences the number of kernels in a row of corn, a quantitative trait. On average an ear of corn has ~800 kernels of corn in 16 rows. The locus you are working with appears t..
Is there a difference between the initial and the final energy levels in catalyzed and non-catalyzed reactions?
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