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Biology MDCAT Prep — practice questions with answers

6 free MDCAT Prep Biology questions, each with the correct answer and a worked explanation. No sign-up and no payment — every answer on this page is visible to anyone who opens it.

They come from the question bank our teachers write for their own students, and each one has been checked by the teacher who wrote it. Attempt the question before you reveal the answer: getting it wrong and then reading why is what actually moves a grade, and a question you answer instantly is a topic you can stop revising.

Topics covered on this page

  • FSc Part I: Animal Diversity
  • FSc Part I: Plant Diversity and Life Cycles
  • FSc Part I: Proteins and Nucleotides
  • FSc Part I: Anaerobic Metabolism and Lipid Respiration
  • FSc Part I: Mendelian Genetics
1

Select the accurate statement concerning Cnidaria.

  1. A.Cnidaria has a gastrovascular cavity with a single opening.
  2. B.Cnidaria has a cellular level of organization and no true organs.
  3. C.Cnidaria commonly has a true coelom divided by septa.
  4. D.Cnidaria is the most species-rich animal phylum.

Answer: Cnidaria has a gastrovascular cavity with a single opening.

Cnidaria has a gastrovascular cavity with a single opening.

FSc Part I: Animal Diversity · standard

2

If pteridophyte were disrupted, which immediate biological effect would be most likely?

  1. A.double fertilization and fruit formation would be lost
  2. B.water and nutrient transport would remain limited without specialized conducting tissue
  3. C.vascular spore-producing plants would be absent from terrestrial ecosystems
  4. D.seed production in dry habitats would rely only on flowering plants

Answer: vascular spore-producing plants would be absent from terrestrial ecosystems

Without functional pteridophyte, vascular spore-producing plants would be absent from terrestrial ecosystems.

FSc Part I: Plant Diversity and Life Cycles · advanced

3

In a living system, what does gymnosperm mainly accomplish?

  1. A.pioneers moist habitats and reproduces by spores
  2. B.reproduces through cones and pollen without forming fruits
  3. C.transports water through vascular tissue while reproducing by spores
  4. D.uses flowers and fruits for reproduction and seed dispersal

Answer: reproduces through cones and pollen without forming fruits

Its principal role is that it reproduces through cones and pollen without forming fruits.

FSc Part I: Plant Diversity and Life Cycles · standard

4

Which site is correctly matched with phosphodiester bond?

  1. A.along the backbone of proteins
  2. B.within folded globular and fibrous proteins
  3. C.in the cytosol and amino-acid pools of cells
  4. D.between the 3-prime hydroxyl and 5-prime phosphate of neighboring nucleotides

Answer: between the 3-prime hydroxyl and 5-prime phosphate of neighboring nucleotides

It is found or acts between the 3-prime hydroxyl and 5-prime phosphate of neighboring nucleotides.

FSc Part I: Proteins and Nucleotides · standard

5

Which term is defined as anaerobic reduction of pyruvate to lactate?

  1. A.beta oxidation
  2. B.substrate-level phosphorylation
  3. C.alcoholic fermentation
  4. D.lactic acid fermentation

Answer: lactic acid fermentation

Lactic acid fermentation is anaerobic reduction of pyruvate to lactate.

FSc Part I: Anaerobic Metabolism and Lipid Respiration · foundation

6

Which term is defined as an alternative DNA sequence at a particular gene locus?

  1. A.independent assortment
  2. B.allele
  3. C.test cross
  4. D.law of segregation

Answer: allele

Allele is an alternative DNA sequence at a particular gene locus.

FSc Part I: Mendelian Genetics · foundation

These come from the question bank our teachers write for their own classes. If a topic here keeps catching you out, ask for a tutor who teaches it.

Biology MDCAT Prep practice — questions parents and students ask

Are these Biology MDCAT Prep questions free?

Yes, completely. There is no sign-up, no paywall and no limit on how many you attempt. Every answer and explanation on this page is visible to anyone who opens it.

How many Biology questions are here?

There are currently 6 MDCAT Prep Biology questions on this page, and we add more as our teachers publish them.

Do the questions come with explanations?

Every one. You get the correct answer plus a worked explanation of why it is correct, which is the part that teaches you something — a bare answer key does not.

Are these past paper questions?

They are written to the same syllabus and style as the papers our students sit, by teachers who teach that syllabus. Use them alongside real past papers rather than instead of them.

How should I use practice questions to improve my marks?

Attempt them before you revise, not after. Mark honestly, read the explanation for every one you get wrong, and write down the topic. That list of recurring topics is your revision plan — far more useful than re-reading the chapter.

Can I get a tutor for the topics I keep getting wrong?

Yes. Tell us the subject and level and we will match you with a tutor who teaches Biology at MDCAT Prep. The first lesson is free.

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