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MCQ’s GENERAL PATHOLOGY- CELL CYCLE (29/03/21)

1.Correctly matched with organ and stem cell niche are all except?

A)  Intestine- crypts

B)  Eyes- limbus of cornea

C)  Brain- periventricular zones

D)  Bone marrow- Paratrabecular area

Answer: D- Bone marrow stem cell niche is – peri-sinisoidal region.

2. Which is the true statement

A)  Rb gene is the key regulator of G2M cell cycle transition.

B) Rb is active in hypophospholylated state

C) MDM2 protein activates p53

D)  p53 activation leads to cell cycle progression

Answer: B – is true, Rb is the regulator of G1/S phase, MDM2 protein inhibits p53 and p53 active leads to transient cell cycle arrest.

Yeaterdays questions with updated answers https://pathologymcqforall.wordpress.com/2021/03/28/mcqs-general-pathology-growth-factors-and-receptors-28-3-20/

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ROBBINS PATHOLOGY QUESTION BANK

MCQ’S GENERAL PATHOLOGY-GROWTH FACTORS AND RECEPTORS (28/3/20)

1.All are true about receptors with tyrosine kinase activity except?

A) Downstream phosphorylation is a common pathway of signal transduction

B) Changes in receptor geometry can stimulate intrinsic receptor protein kinase activity

C) The cellular homologue of the transforming protein of the Rous sarcoma virus, called Src, is the
prototype of this family.

Answer: C – src is a prototype of non- receptor tyrosine kinase family

2. Which one is matched correctly?

A) EGFR- synonymous to ERB-B2

B) Her-2-neu -ERB-B1

C) TGF-beta- Inflammatory cytokine

D) Hepatocyte growth factor- Scatter factor.

Answer- D – erb-b1 is EGFR, erb-b2 is her2-! and TGF-beta is anti-inflammatory

3. Which of the following is false about collagen ?

A) Collagen I,V and XI are heterotrimers

B) Defects in collagen occur in marfan syndrome

C) Helix formation occurs in the golgi apparatus

D) Cross-linking occurs in the extracellular space

Answer: B- Marfan syndrome is caused by defects in fibrillin

For more questions checkout

Questions and explanations on cellular housekeeping: https://pathologymcqforall.wordpress.com/2021/03/28/general-pathology-mcqs-topic-cellular-house-keeping/

Questions and explanations on genome: https://pathologymcqforall.wordpress.com/2021/03/26/mcqs-general-pathology-genome-26-03-2021/

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All about Peutz-Jeghers syndrome

Watch the video and answer the following question..

All of the following are associated with Peutz- Jehers syndrome except?

A) Sertoli cell tumors

B) Adenoma malignum

C) Pancreatic carcinoma

D) Transitional carcinoma of bladder

E) Sex-cord stromal tumor with annular tubules.

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Useful for NEET-SS Oncopathology, DM Histopathology, FRCPath, and Hematopathology fellowships.