Q1. Ethanol is produced through the fermentation process. It is considered as --
ID: 101199 • Letter: Q
Question
Q1. Ethanol is produced through the fermentation process. It is considered as -----. Select the option:
A. Medium value medium volume product.
B. High value low volume product.
C. Low value high volume product.
D. None of the above.
Q2. Which is the correct statement from the following statements on Arrhenius model of the rate constant? k=Ae^(-E/RT)
A. A is always dimensionless.
B. For two reaction 1 and 2, if A1=A2 and E1>E2 then k1(T) > k2(T).
C. For a given reaction, the percentage change of k with respect to temperature is higher at low temperature.
D. The percentage change of k with resppect to temperature is higher for higher A.
A. 2
B. 4
C. 11
D. 22
Q4. For the long term preservation of microbes, the following methods are used. Indicate all the possible options:
A. Slant culture
B. Plating
C. Glycerol stocks
D. Freeze drying
Q5. End product of glycolytic cycle is the following:
A. Ethanol
B. Acetic acid
C. Pyruvic acid
D. Lactic acid
Q6. The probability of congenital heart disease is 1/2. What is the probability that 3 persons in a family of 10 have that disease?
A. 0.045
B. 0.0377
C. 0.033
D. 0.30
Q7. Colon cancer has a mortality rate =12%. A drug is being tested for its cure, what is the minimum number of patients required to demonstrate the efficacy of the completely curative drug (at 95% confidence) ?
A. 23
B. 24
C. 25
D. 26
Q8. The probability of a birth defect is 10%. What is the difference in probability that no one in a family of 10 people have that birth defect if used Poisson distribution or Binomial distribution?
A. 0.0155
B. 0.0183
C. 0.0212
D. 0.0144
Q9. 1250 white blood cells were counted per 1 ml of blood. What is the 95% confidence lower limit for the patient's true white blood cell count?
A. 1170
B. 1220
C. 1180
D. 1200
Q10. We are testing if drug A is better than drug B. Wjich is the correct statement?
C. Ho: Drug A = Drug B, Ha: Drug A > Drug B
D. Ho: Drug A = Drug b, Ha: Drug A < Drug B
Q11. We are conducting a clinical trial for an anticancer drug. In addition to the test group( who are given the drug) what other groups should be present?
A. there should be a control group and a placebo group
B. there should be a control group
C. there should be a placebo group
D. there should not be a control group but a placebo group
A. 63.8% of the area
B. 95.4% of the area
C. 99.7% of the area
D. 90% of the area
Q13. In a standard normal distribution, what is the area between Z= - 2.5 and Z= +2.5?
A. -0.9938
B. 0.9938
C. 0.9876
D. - 0.9932
Q14. During the muation of microbial strain using UV rays, which of the following transformation takes place?
A. Removal of base
B. Formation of free radicals
C. Formation of pyrimidine dimers
D. Modification of base
A. linearly with time
B. exponentially with time
C. very abrubtly towards the end of the reaction
D. logarithmically with time
Explanation / Answer
14.b Formation of pyrimidine dimers occurs by the exposure of UV rays.
15.a.A first-order reaction is a reaction that proceeds at a rate that depends linearly on only one reactant concentration.
11.a.For a clinical trial of anticancer drug there should be a control group and a placebo group.
4.d.Freeze drying bacteria is a useful method for long-term preservation. Freeze drying bacteria is a multistep process which involves culturing the microbes, suspending them in a lyophilization medium/buffer, subjecting them to the freeze drying process, and then subsequently storing them properly.
5. c.End product of glycolytic cycle is pyruvic acid.
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