IF1 helps in correct placement of the initiation tRNA. How does it do so?

Which set of the following events occurs during the elongation step of translation?
P. Attachment of mRNA with the smaller subunit of ribosome
Q. Loading of correct aminoacyl-tRNA into the A site.
R. Formation of a peptide bond between the amino acyl-tRNA in the A site and the peptide chain that is attached to the peptidyl-tRNA in the P site.
S. Dissociation of the ribosomal subunits.
T. Translocation of peptidyl-tRNA from the A site to the P site of the ribosome.

A

P, Q and R

B

P, Q and T

C

Q, R and T

D

R, S and T

What is the need for having a historically valid science curriculum? (a) It helps understand how social factors influence the development of science. (b) It helps the learner to view science as infallible. (c) It helps learners appreciate how the concepts of science evolve with time. (d) It helps to highlight the achievement of western countries in science.

A

(a) and (b)

B

Only (d)

C

Only (b)

D

(a) and (c)

There is a paragraph in class V EVS textbook based on AI-Biruni's observation of construction of ponds in India some thousand years ago. What would be the purpose of including this paragraph? a. It helps learners to identify sources of history. b. It helps learners to improve their recording of observations. c. It helps learners to appreciate technology present in India some 1000 years back. d. It helps learners to appreciate the role of evidence in history.

A

a, c, d

B

only a & d

C

only a & c

D

a, b, c

Three – phase to ground fault takes place at locations F1 and F2 in the system shown in the figure If the fault takes place at location F1, then the voltage and the current at bus A are VF1 and IF1 respectively. If the fault takes place at location F2, then the voltage and the current at bus A are VF2 and IF2 respectively. The correct statement about voltages and currents during faults at F1 and F2 is

A

V_F1 leads I_F1 and V_F2 leads I_F2

B

V_F1 leads I_F1 and V_F2 lags I_F2

C

V_F1 lags I_F1 and V_F2 leads I_F2

D

V_F1 lags I_F1 and V_F2 lags I_F2

For speed x rpm, we get field current If1 and for speed y rpm, we get the field current If2. If y is greater than x then, ________________

A

If1 f2

B

If1 >If2

C

If1 =If2

D

Cannot comment on If1, If2

Match the following two lists in which List I highlights the description of the Purpose Related to Specific Guidance Service and List II indicates Types of Guidance Service. Choose the correct answer using the code given below. List I List II (a) Determines the pace of progress of former pupils on the basis of their contextual placement (i) Follow-up Service (b) Description of aspects related to a particular job for matching the individuals with the job characteristics (ii) Placement Service (c) Liking of a particular job by a person which is visible through gestures etc. while going to the work place (iii) Job Analysis (d) Aims at providing assistance to students in deciding educational and vocational stream (iv) Job Satisfaction (v) Counselling (vi) Occupational Information Service

A

(a) - (i), (b) - (iii), (c) - (iv), (d) - (ii)

B

(a) - (iii), (b) - (iii), (c) - (iv), (d) - (v)

C

(a) - (v), (b) - (iv), (c) - (vi), (d) - (ii)

D

(a) - (v), (b) - (iv), (c) - (i), (d) - (ii)

ট্রান্সলেশনের ক্ষেত্রে- i. tRNA থেকে প্রোটিন তৈরি হয় ii. tRNA সুনির্দিষ্ট অ্যামাইনো এসিড বহন করে iii. শুরু করার কোড হলো AUC নিচের কোনটি সঠিক?

A

i

B

ii

C

iii

D

i ও ii

Which of the following initiation factor when bound to the 30S subunit blocks the A site, so that only the P site is available for the initiator tRNA to bind to?

A

IF-4

B

IF-2

C

IF-3

D

IF-1

Which of the following initiation factor bring the initiator tRNA?

A

IF-4

B

IF-3

C

IF-1

D

IF-2

The C-terminal domain of tyrosyl-tRNA synthetase contains major binding determinants for the tRNA.

A

False

B

True

IF1 helps in correct placement of the initiation tRNA. How does it do so?

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