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Which supports the idea that a membrane is asymmetric?
a. the ratio of the area of lipids extracted from red cell membranes to the area of the membranes was 2:1b. particles were seen in freeze-fractured samples of membranesc. addition of certain antibodies to cells caused patching of the antigens.d. Certain proteins can be labeled from either side of a membranee. Certain proteins can be labeled from only one side of a membrane.
You have created a cDNA library of human DNA from fibroblasts (a type of skin cell), and have obtained from a colleague a cloned histone H4 gene from yeast.
Why is it advantageous of an organism to be diploid? Why is it a disadvantage to a geneticist who might wish to study the organism? Why is it advantageous for a diploid organism to produce haploid gametes in order to reproduce itself?
Does the nucleotide sequence of a mutation tell you anything about its dominance or recessiveness?
A student needs 260 ml of buffer at the working concentration (1X) and has a 20X buffer stock. What volume of the 20X stock is required?
Some proponents argue that the "damage" hypothesis makes more sense from an evolutionary perspective, claiming that it is more advantageous for an organism's defence system to respond to tissue damage than to the mere presence of a foreign microbe. D..
How do biologists make phylogenetic trees? That is, what information do biologists generate to determine relatedness? How strong / weak are each of these different types of data?
Suggest two different strategies for synthesizing a 0.5-kb gene. Discuss the advantages and disadvantages of both methods.
Suppose that a typical stomach pH of 2.0, how many times more concentrated are the hydrogen ions inside your stomach than in milk?
Why does traveling up a mountain take you through biomes similar to those you would encounter traveling from the south to the north (in the northern hemisphere)?
Explain why are ripe fruits often colorful, fragrant and sweet? Determine the difference between pollination and fertilization in flowering plants?
Determine pseudodominance and how is it produced through a chromosome deletion and how does bacterial DNA differ from eukaryotic DNA?
Describe the process of genetic recombination in respect to the manner by which a vast diversity of antibody specificities is produced by a relatively small number of genes.
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