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Q1. Johnny, a 5-year-old boy, has been growing by leaps and bounds; his height is 100 percent above normal for his age. He has been complaining of headaches and vision problems. A CT scan reveals a large pituitary tumour.
1) What is the possible cause of the excessive growth?
2) What condition will Johnny exhibit if corrective measures are not taken?
3) What is the probable cause of his headaches and visual problems?
Q2. Suppose the diameter of the field of vision in your microscope is 2mm under low power. If one Bacillus cell is 2 micrometers how many Bacillus cells could fit end to end across the microscope? How various 10 micrometers yeast cells could fit across the field?
How organismal respiration and cellular respiration are interconnected. While you visit him, his teeth are chattering, his skin is cool and clammy to touch, and he complains of feeling cold even though his room is quite warm. Elucidate his symptoms.
In maize, a dominant allele (A) is essential for seed color as opposed to colorless (a). Another gene has a recessive allele (w) which results in waxy starch, as opposed to normal starch (W).
Two intracellular molecules A and B are continually synthesised at a constant rate of 1000 per molecule per cell. Each molecule of A survives an average of 100 seconds. While each molecule of B survives an average of 10 seconds.
Examine the major stages of sea urchin development with reference to your series of detailed drawings and observational notes. How did the embryonic cells compare in size with the original gamete cells? State reasons such a difference may exist.
After verifying that the protein complex was incorporated into liposomes, you put in NADH and incubate at 37°C. You are dismayed to view no color change in the pH indicator dye.
A mole of an assured compound contains 207.7 g of lead and 32.00g of oxygen. Without doing any calculations, tell whether a formula Unit of a compound contains more atoms of lead or more atoms of oxygen. Explain in details.
Darwin understood how natural selection works in the presence of a population with many variant types. What does that variation consist of? How does variation arise? How does it spread during the population.
ATP-synthase is a large membrane-integral protein complex that produces ATP from ADP and inorganic phosphate. Describe the location of this complex in the cell; list its major parts and the subunits each part is made of. Describe how it is able to co..
Suppose archaeologists discover human skeletal remains in Ethiopia. Examination of the bones suggests that the remains represent four types of individuals. Two of the skeletons have bone densities that are 30 percent less than those of the other two ..
Sickle cell anemia is a disease of red blood cells in which the genetic mutation in DNA leads to a mutation in hemoglobin. A single base vary alters the DNA sequence CTC to CAC which codes for the wrong amino acid. What amino acid is coded for throug..
Describe how these two processes are related between plants and animal based on rectants and products (water, carbon dioxide, glucose and oxigen) of both pathways.
If the horticulturist breeding gardenias succeeds in having a single plant with a particularly advantageous set of traits, which would be her most probable and efficient route to establishing a line of such plants.
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