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Consider the following statements.<br>1. The smallest RNA is t RNA.<br>2. The most abundant RNA of cell is r RNA.<br>3. DNA can be formed over RNA through reverse transcriptase.<br>Which of the statements given above are false?
A
1 and 2
B
2 and 3
C
1, 2 and 3
D
None of the above
Correct Answer:
None of the above
What is the monoisotopic mass of glycine? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031.
A
99.0687
B
87.2365
C
57.052
D
57.0214
What is the monoisotopic mass of threonine? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031.
A
111.0451
B
121.024
C
201.258
D
101.047
What is the monoisotopic and average mass of valine? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031, The average mass of Carbon (C)=12.011, The average mass of Hydrogen (H)=1.008, The average mass of Oxygen (O)=15.999, The average mass of Nitrogen (N)=14.007.
A
99.068 and 99.2361
B
99.216 and 99.326
C
99.111 and 99.321
D
99.068 and 99.132
What is the monoisotopic mass of proline? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031.
A
91.527
B
43.519
C
87.063
D
97.052
Consider the following statements regarding DNA replication and choose the correct answer:
1. The very first requirement of DNA synthesis is the presence of a template or plan along which the new strand is to be constructed
2. The second requirement is of a DNA-dependent-DNA polymerase or simply DNA polymerase enzyme
3. A DNA Pol cannot join two free nucleotides; one of them must be anchored by hydrogen bonds to a DNA strand
4. Replication takes place bidirectionally
A
1, 2, 3 and 4 are true
B
Only 2 and 4 are true
C
Oniy 2, 3 and 4 are true
D
Only 1 and 2 are true
Consider the following statements regarding cell cycle and choose the correct answer:
1. During G
1
phase the cell grows in size and there is an active synthesis of RNA and proteins
2. The third stage of the cell cycle is termed G
2
phase
3. In the mitotic phase, the DNA molecule of each chromosome replicates by the synthesis of a new DNA molecule on the template of the existing DNA
A
Only 1 and 2 are correct
B
Only 2 and 3 are correct
C
Only 3 is correct
D
Only 1 and 3 are correct
Consider the following statements.
1. All valid arguments contain only true premises and a true conclusion.
2. Some valid arguments contain only false propositions - false premises and a true conclusion.
3. All valid arguments contain only false propositions all premises are false, conclusion is false as well.
Which of the above statements is correct?
A
Only 1
B
Only 1
C
Only 3
D
None of these
The transfer function of a discrete time LTI system is given by
$$H\left( z \right) = {{2 - {3 \over 4}{z^{ - 1}}} \over {1 - {3 \over 4}{z^{ - 1}} + {1 \over 8}{z^{ - 2}}}}$$
Consider the following statements:
S
1
: The system is stable and causal for
$$ROC:\left| z \right| > {1 \over 2}$$
S
2
: The system is stable but not causal for
$$ROC:\left| z \right| S
3
: The system is neither stable nor causal for
$$ROC:{1 \over 4} Which one of the following statements is valid?
A
Both S<sub>1</sub> and S<sub>2</sub> are true
B
Both S<sub>2</sub> and S<sub>3</sub> true
C
Both S<sub>1</sub> and S<sub>3</sub> are true
D
S<sub>1</sub>, S<sub>2</sub> and S<sub>3</sub> are all true
Simplify : $${{{5 \over 3} \times {7 \over {51}}{\text{ of }}{{17} \over 5} - {1 \over 3}} \over {{2 \over 9} \times {5 \over 7}{\text{ of }}{{28} \over 5} - {2 \over 3}}}$$
A
$$\frac{1}{2}$$
B
4
C
2
D
$$\frac{1}{4}$$
Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it. The Alaska pipeline starts at the frozen edge of the Arctic Ocean. It stretches southward across the largest and northernmost state in the United States, ending at a remote ice-free seaport village nearly 800 miles from where it begins. It is massive in size and extremely complicated to operate. The steel pipe crosses windswept plains and endless miles of delicate tundra that tops the frozen ground. It weaves through crooked canyons, climbs sheer mountains, plunges over rocky crags, makes its way through thick forests, and passes over or under hundreds of rivers and streams. The pipe is 4 feet in diameter, and up to 2 million barrels (or 84 million gallons) of crude oil can be pumped through it daily. Resting on H-shaped steel racks called "bents", long sections of the pipeline follow a zigzag course high above the frozen earth. Other long sections drop out of sight beneath spongy or rocky ground and return to the surface later on. The pattern of the pipeline's up-and-down route is determined by the often harsh demands of the arctic and subarctic climate, the tortuous lay of the land, and the varied compositions of soil, rock, or permafrost (permanently frozen ground). A little more than half of the pipeline is elevated above the ground. The remainder is buried anywhere from 3 to 12 feet, depending largely upon the type of terrain and the properties of the soil. One of the largest in the world, the pipeline cost approximately $8 billion and is by far the biggest and most expensive construction project ever undertaken by private industry. In fact, no single business could raise that much money, so 8 major oil companies formed a consortium in order to share the costs. Each company controlled oil rights to particular shares of land in the oil fields and paid into the pipeline-construction fund according to the size of its holdings. Today, despite enormous problems of climate, supply shortage, equipment breakdowns, labour disagreements, treacherous terrain, a certain amount of mismanagement, and even theft, the Alaska pipeline has been completed and is operating.
Which of the following were not problems faced while constructing the pipeline?
A
Supply shortages
B
Treacherous terrain
C
Lack of funds
D
Equipment breakdown