PPSC FPSC KKPSC BPSC SPSC Lecturer Botany MCQs Test No. 55

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There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
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Test Instructions:-
Test Name Lecturer Botany
Subject Botany Test 55
Test Type MCQs
Total Questions 25
Total Time 20 Minutes
Total Marks 100
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You have 20 minutes to pass to the quiz.

You have 20 minutes to pass to the quiz.


Lecturer Botany Online Test No. 55

1 / 25

By analyzing the structure of normal and sickle cell haemoglobin, Ingram, working at Cambridge university, showed that sickle cell anemia is caused by a change from glutamic acid to:

2 / 25

The segments, called Okazaki fragments are about__ nucleotides long in prokaryotes.

3 / 25

One _ gene/ One _ Enzyme Hypothesis was given by:

4 / 25

Beadle and Tatum exposed Neurospora spores to:

5 / 25

The two steps of central dogma taken together are also means of gene:

6 / 25

The ___ of the gene encoding hemoglobin differed only in their specification of this one amino acid in the hemoglobin amino acid chain.

7 / 25

In alkaptonuria the patients produced urine that contained:

8 / 25

Many enzymes contain multiple protein or polypeptide subunits, each encoded by a separate gene, the relationship is today more commonly referred to as:

9 / 25

The second step of the central dogma is the transfer of information from RNA to  proteins. Which occurs when the information contained in the mRNA is used to direct the synthesis of polypeptides by ribosomes. This process is called:

10 / 25

The medium has limited supply of nutrients is called as:

11 / 25

Change in tiny part of DNA is:

12 / 25

The critical change leading to sickle cell disease is a mutation that replaces a single thymine with an __ at the position that codes for glutamic acid converting the position to valine:

13 / 25

__ are responsible for catalysing the synthesis of all the parts of an organism.

14 / 25

Following is the essential Constituent of the fungal medium:

15 / 25

The first step of central dogma is the transfer of information from DNA to RNA, which occurs when an mRNA copy of the gene is produced. The process is called:

16 / 25

Transcription is initiated when the enzyme RNA polymerase binds to a particular binding site called a:

17 / 25

 Sanger's achievement was significant, as  it was demonstrated for the first time that proteins consisted of definable sequences of:

18 / 25

In 1953, an English biochemist Frederick Sanger, described the complete sequence of amino Acids of:

19 / 25

Vernon Ingram in 1956 discovered the molecular basis of:

20 / 25

The medium having rich source of food is:

21 / 25

The characteristics of sickle cell anemia and most other hereditary traits are defined by changes in protein structure brought about by an alteration in the sequence of:

22 / 25

The sequence of nucleotides that determines the amino acid sequence of a protein is called a:

23 / 25

All organisms use the same basic mechanism of reading and expressing genes, which is often referred to as central dogma. The genetic information resides in:

24 / 25

The genetic information flows down into RNA, which is then converted into:

25 / 25

Each Okazaki fragment is synthesized by DNA polymerase III in:

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