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An animal cell has 46 post-mitotic chromosomes in each of its somatic cells. How many chromosomes should be present in the following cells-
a) Mature egg, b) 1st polar body, c) Sperm, d) Spermatid, e) Primary spermatocyte, f) Brain cell, g) Secondary oocyte, h) Spermatogonium.
How many pairs of genes regulating tail length character. Adding of H+ or OH- to a reaction increased its overall rate indicating the rate limiting step was the addition of H+ or OH- to the intermediate. Is this really true? Why or why not.
How would you answer to a person who argued that there is nothing to worry about because natural systems, through natural succession, will heal the wounds of human activities and restore the balance of nature.
The "Primordial soup" includes the mixture of elements and gases which are thought to have started life on the Earth. Describe Miller and Urey's experiment.
Tina is consuming 12 mg of iron per day. Her RDA is 15 mg. She has no condition warranting a greater-than-normal need for iron. Which of the statements is true about her consumption of this nutrient.
Propose two ways the photosynthesis process be improved. If the sequence TCGTA was used as a template in DNA replication, what will the sequence of bases be on the newly synthesized strand.
Why is the amount of oxygen consumed so much greater than the amount require to oxidize the added oxaloacetate or malate completely.
How are carbohydrates important in RNA and DNA. What is their function in body organs and nerve cells? Do you know of any other functions?
Though plants, fungi, and prokaryotes all have cell walls, we classify them under different taxonomic units. Which of the observations below comes closest to explaining the basis for placing these organisms in different taxa.
Compare and contrast gene expression in prokaryotes vs. eukaryotes from the standpoint of promoter sequences
A test tube contains starch, pancreatic amylase, and water. The buriet is negative. After 30 minutes, Benedict's test is positive. What substance is present.
explain Why is it advantageous for citrate the product of reaction 1 of the TCA, to inhibit phosphofructokinase, which catalyses the third reaction in glycolysis.
Spiny species of diatoms are found both in warm subtropical waters in addition to in colder areas. Since warm water is less dense than cold water, would you predict any differences between the spines of warm-water and cold-water individuals? Why.
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