0 [{"id":376638,"quiz_id":"19231","answer_id":null,"answerType_id":"0","created_at":"2018-02-11 12:45:26","updated_at":"2018-02-13 17:53:38","questionName":"All of the folllowing are used in PCR except:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":1,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":376642,"quiz_id":"19231","answer_id":null,"answerType_id":"0","created_at":"2018-02-11 12:54:39","updated_at":"2018-02-13 17:53:38","questionName":"Which out of the following mechanisms is involved in the production of variety of immunoglobins each specific for a specific antigen?","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":6,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":376637,"quiz_id":"19231","answer_id":null,"answerType_id":"0","created_at":"2018-02-11 12:41:44","updated_at":"2018-02-13 17:53:38","questionName":"A 40 year old alcoholic comes in with severe pain in his big toe. 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block

All of the folllowing are used in PCR except:

Select the correct answer(s).  

(0/0)

---

oligonucleotide primers

Taq polymerase

deoxynucleoside triphosphates

restriction enzymes

none

Which out of the following mechanisms is involved in the production of variety of immunoglobins each specific for a specific antigen?

Select the correct answer(s).  

(0/0)

---

class switching

gene amplification

RNA editing

Gene rearragement

none

A 40 year old alcoholic comes in with severe pain in his big toe. You decide to administer Allopurinol which of the following enzymes:

Select the correct answer(s).  

(0/0)

---

Thymidine kinase

Adenosine Deaminase

Xanthine Oxidase

Adenine phosphoribosyl transferase

none

Which out of the following is an inhibitor of prokaryotic transcription?

Select the correct answer(s).  

(0/0)

---

Etoposide

Rifampicin

Ciprofloxacin

Erythromycin

none

With respect to the LAC operon, if both glucose and lactose are present and glucose is low, which of the following is not true?

Select the correct answer(s).  

(0/0)

---

increased transcription of the lac operon

high CAP

increased uptake of lactose

low cAMP

none

Which out of the following is a common enzyme for de novo as well as savage pathway of purine biosyntesis?

Select the correct answer(s).  

(0/0)

---

adenylosuccinate synthetase

PRPP synthetase

amidotransferase

HGPRTase

none

The following are features of DNA replication except:

Select the correct answer(s).  

(0/0)

---

semi-conservative

semi-discontinous

chain growth in the 5'->3' direction

unidirectional

none

Which of the following subunits of the bacterial RNA polymerase is responsible for promoter region?

Select the correct answer(s).  

(0/0)

---

sigma

B'

alpha

B

none

In Pyrimidine Synthesis, Eukaryotes can use uracil to feedback inhibit which of the following enzymes?

Select the correct answer(s).  

(0/0)

---

Thymidylate synthase

Aspartate Transcarbamoylase

Carbamoyl phosphate synthase

Dihydrooratase

none

which of the following, in high concentrations can overcome PURINE DE NOVO inhibiton?

Select the correct answer(s).  

(0/0)

---

GDP

PRPP

ribose-5-phosphate

5-phosphoribosyl-1 -amine

none

The oncogene Ras binds:

Select the correct answer(s).  

(0/0)

---

hemoglobin

ATP

GTP

glucose

none

Which of the following is not true of RNA synthesis?

Select the correct answer(s).  

(0/0)

---

the energy is supplied by the ring cleavage

the RNA sequence is of opposite polarity to the template starnd of DNA

the RNA sequence is complementary to the template strand of DNA

the key enzyme is RNA polymerase

none

A 10 year old boy comes to the ER after eating wild mushrooms. The poison assosiated with these mushrooms lost likely directly inhibits the synthesis of the following:

Select the correct answer(s).  

(0/0)

---

tRNA

DNA

mRNA

hnRNA

none

All of the following are required for PURINE DE NOVO synthesis EXCEPT:

Select the correct answer(s).  

(0/0)

---

CO2

Glycine

Glutamine

Isoleucine

none

Choose the nucleoside analogue used as an anticancer drug out of the following?

Select the correct answer(s).  

(0/0)

---

cystosine arabinoside

6-mercaptopurine

methotrexate

vinblastin