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Life as we know it could not exist without water. All the chemical reactions of life occur in aqueous solution. Water molecules are polar and are capable of forming hydrogen bonds with other polar or charged molecules. As a result, water has the following properties:A. H2O molecules are cohesive; they form hydrogen bonds with each other.B. H2O molecules are adhesive; they form hydrogen bonds with polar surfaces.C. Water is a liquid at normal physiological (or body) temperatures.D. Water has a high specific heat.E. Water has a high heat of vaporization.F. Water's greatest density occurs at 4°C.Explain how these properties of water are related to the phenomena described in parts a-h below. More than one property may be used to explain a given phenomenon.a. During the winter, air temperatures in the northern United States can remain below 0°C for months; however, the fish and other animals living in the lakes survive.b. Many substances, for example, salt (NaCl) and sucrose, dissolve quickly in water.c. When you pour water into a 50-ml graduated cylinder, a meniscus forms at the top of the water column.d. Sweating and the evaporation of sweat from the body surface help reduce a human's body temperature.e. Water drops that fall on a surface tend to form rounded drops or beads.f. If you touch the edge of a paper towel to a drop of colored water, the water will move up into (or be absorbed by) the towel.
Research protist parasites in the Genus Giardia. Scientists have proposed that these organisms represent the "missing link" between prokaryotes and eukaryotes. Explain the cellular structure of Giardia and describe how the cells are alike to typical ..
Determine which type of chromosome structure is characterized by the centromere position very near the end of the chromosome with the short arm composed of highly repetitive DNA?
Cytopathic and non-cytopathic viruses elicit very different immune responses. The primary determining factor in the type of immune response to a viral infection is which of the following (select one)?Answer
In most organisms, oxygen slows down glycolysis, and pyruvate is directed towards the TCA cycle rather than fermentative pathways this is called the Pasteur Effect.
Look up the genome size of the following organism: Escherichia coli, Homo sapiens, Zea mays, Li Hum longiflorum, Protopterus aethiopicus.
Curled ears is an autosomal dominant monogenic trait in cats conditioned by gene C. A heterozygous curl cat is bred with a normal eared cat.
Assume you examine the stability of your favorite protein kinase and find that half of the protein is degraded every 10 minutes.
What would be the effect of the same analogue on signal transduction of an epithelial cell after exposure to epidermal growth factor (EGF)? How would this compare to the effects of the cholera toxin on these same cells.
find out the length of a DNA molecule in inches
Also glucose technically doesn't have a carbonyl functional group then because it is broken when the ring structure is formed? Is it a random chance that either alpha or beta glucose is formed.
Work out this chi-square value. How to do a Chi Square trouble for the gentics class.
Determine which of the following is the best evidence that thermoregulation in an endothermic animal is taking place?
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