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Q1. The oldest rocks on Earth date from about 4.2 billion years ago. What does this propose about the interval between 4.6 billion years ago, while the Earth started to form, and 4.2 billion years ago?
Q2. You also measure that half-life of the Winease catalyzed conversion is 10 sec. If you begin with 100mM of Lemonade, approximately how much Lemonade will stay after 100 sec?
Q3. A scientist conducts research on the sample of DNA that contains 200 nucleotides. Her results show that adenine makes up 30 percent of the sample and cytosine makes up 20 percent of the sample. The remaining 50 percent of the sample is made up of thymine and guanine. How many of nucleotides are thymine?
In maize the genes Pl for purple leaves (dominant over green leaves); sm for salmon silk ( recessive for yellow silk) and py for pigmy plant (recessive to normal size) are on chromosome 6 at positions 45, 55 and 65 respectively. Predict the propor..
Discuss and explain how you would calculate delta G for the reaction: glucose+6O2---> 6CO2+6H2O. If you were told that this reaction is highly exergonic.
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is placed on the scalp, and a brief burst of current in the coil produces a rapidly changing magnetic field inside the br..
At the present we know that over 99 percent of the time, glucose occurs in the closed-ring form. What likely difference between these forms would give chemists a clue that the open-chain form was not present.
AIDS is often treated with a "cocktail" of several antiviral agents at once. Why is the cocktail more effective than a single agent? What is a physician trying to prevent by prescribing several drugs at once?
EDTA is a synthetic amino acid which body perceives as a foreign object. It is therefore delivered to kidney and and removed from body through urine.
Explain why do positive inotropic agents help in the treatment of heart failure and also explain why are patients with chronic hypertension prone to developing heart failure?
In Drosophilia, two red-eyed, long winged flies are mated and produce the following offspring.
What is Mendel's first principle? In your answer give anexample of a cross that led Mendel to this explanation.
Occasionally, subjecting a plant to photoflood and a fan will produce a lower rate of transpiration than exposing it solely to a photoflood. Why is alcohol effective against some viruses and not others?
What is a homin and how is it different from a hominine? and state mnemonic device to remember the difference between a homin and hominine.
q1. a female rat that is heterozygous for an autosomal reciprocal translocation has 36 eggs that were generated from
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