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Gene expression normally results in proteins. In blood types the ABO results in carbohydrates. What is the activity of this gene ? Where in the cell would this enzyme activity occur?
A soybean mutant exhibiting tan colored seed coat was recently recognized. Crossing the mutant with wild-type,yellow-seeded soybean plant gave all yellow seeded soybeans in the first generation.
A sixteen year old boy named Jake was admitted into the emergency room complaining of headache, fever, stiffness of abdominal muscles and difficulty swallowing.
The selective estrogen receptor modulators (SERMs) selectively stimulate or inhibit the estrogen receptors of different target tissues. Which group of drug do they belong?
The antibiotic Gramicidin A can transport Na+ ions into a certain cell at the rate of 5.0 x 10^7 Na+ ions channel^-1 s^-1. Calculate the time in seconds to transport enough Na+ ions to increase its concentration.
Create a stretch of DNA that will encode for five or more amino acids. Which DNA sequence will encode for at least five amino acids?
A cricket has a diploid genome of 1.2 billion base pairs. Assume that there are about 200,000 individuals in the population and that the mutation rate is one per 100 million base pairs. About how many new mutations will occur in each generation of..
The phosphorylation of ADP to form ATP stores approximately 7.3 kcal per mole o ATP. What is the approximate efficiency of cellular respiration for a "mutant" organism that produces only 29 mole of ATP for every mole of glucose oxidized, rather than ..
In forensic analysis using STR systems, up to 16 different loci can be tested in a single PCR reaction. Why is it important for forensic analysis that each locus being tested is present on a different chromosome? Ideas are justified.
A typical tumor doubles in size only every 100 days (although this varies significantly depending on the type of tumor). Can you speculate on why this is so much slower than the rate at which the genome can replicate?
Describe the four tissue types, nervous, muscle, epithelial, connective. How did tissues and multicellular animals evolve? How do animals develop.
Chris wanted to test the effect of diet pills on how tall the tomato plants in his garden would grow. He took two pots, filled them with dirt from the same bag, and planted four tomato plants in each.
Define spontaneous generation and who found this idea with animals? who discover his idea for microbes? describe his experiments?
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