How many questions does AceMRCOG have?

AceMRCOG has 1,750 expertly curated MRCOG Part 1 SBA questions across all 14 subjects including Physiology, Pharmacology, Microbiology, Genetics, Pathology, Anatomy, Statistics, Immunology, Biochemistry, Endocrinology, Biophysics, Neonatology, Clinical Management and Embryology.

Yes. AceMRCOG offers a free plan with 50 questions — no credit card required. Paid plans unlock all 1,750 questions, timed mock tests, detailed explanations and performance analytics.

Does AceMRCOG have mock tests?

Yes. Paid plans include full timed mock tests that simulate the real MRCOG Part 1 exam format. Each mock has 100 questions with a 90-minute timer, matching the actual exam conditions.

What is the MRCOG Part 1 pass rate?

The MRCOG Part 1 first-attempt pass rate is approximately 40-50%. Candidates who practice at least 1,500 questions and complete multiple timed mock tests significantly improve their chances of passing on the first attempt.

How long should I study for MRCOG Part 1?

Most successful candidates study for 3-6 months. If working clinically, 3 months with 1.5-2 hours of daily structured study and daily question practice is achievable. The key is consistent question practice — at least 30 questions per day.

What subjects are tested in MRCOG Part 1?

MRCOG Part 1 tests 14 subjects: Physiology, Pharmacology, Microbiology, Genetics, Pathology, Anatomy, Statistics & Epidemiology, Immunology, Biochemistry, Endocrinology, Biophysics, Neonatology, Clinical Management and Embryology.

When is the MRCOG Part 1 exam held?

The MRCOG Part 1 exam is held twice a year — typically in March and September. Exact dates are published by the RCOG on their official website. Registration usually opens 3-4 months before the exam date.

MRCOG Part 1 Subject Guide

MRCOG Part 1: Embryology

~45 questionsLower priority

Embryology covers the development of the embryo and fetus from fertilisation through organogenesis. Approximately 45 questions, with particular focus on early development, placentation, and the developmental origins of congenital anomalies.

Topics Covered

Early Development

›Gametogenesis — spermatogenesis (continuous), oogenesis (arrested at meiosis I until ovulation)
›Fertilisation — site (ampulla), acrosome reaction, cortical reaction (block to polyspermy)
›Cleavage and compaction — morula, blastocyst formation
›Implantation — day 6–7, trophoblast invasion, decidualisation
›Bilaminar and trilaminar disc formation — gastrulation

Organogenesis

›Neural tube closure — day 22–28, failure causes NTD (spina bifida, anencephaly)
›Heart development — cardiac looping, atrial and ventricular septation
›Gut development — foregut, midgut, hindgut derivatives
›Renal development — pronephros, mesonephros, metanephros (permanent kidney)
›Critical periods — each organ has a critical window of teratogen vulnerability

Placentation

›Trophoblast differentiation — cytotrophoblast, syncytiotrophoblast, extravillous trophoblast
›Placental development — villous types (stem, intermediate, terminal)
›Uteroplacental blood flow — spiral artery remodelling by extravillous trophoblast
›Placental transfer — oxygen/CO2 (simple diffusion), glucose (facilitated), IgG (active)
›Amniotic fluid — fetal urine main source after 16 weeks; oligohydramnios vs polyhydramnios

Exam Tips for Embryology

Timing of neural tube closure (days 22–28) is a classic exam question — folate supplementation reduces NTD risk.

Oogenesis arrested at prophase of meiosis I until LH surge — this is tested as a comparison with spermatogenesis.

Placental transfer mechanisms are very high-yield: oxygen and CO2 by simple diffusion, glucose by facilitated diffusion, IgG by active transport (FcRn receptor).

Spiral artery remodelling failure is the basis of pre-eclampsia — connect embryology to clinical O&G.

Know the derivatives of each germ layer (ectoderm, mesoderm, endoderm) — the MRCOG tests these specifically.

Recommended Book

✓ Essential Reproduction (Johnson) for the reproductive embryology sections.

Practice Embryology questions now

AceMRCOG has 45 Embryology SBA questions with detailed explanations. Start with 50 questions free — no credit card needed.

Start Free →

Related Subjects

Physiology

~139 questions

Anatomy

~85 questions

Genetics

~135 questions

← Back to MRCOG Part 1 overview