Welcome to ELMADRASAH.COM emsat biology practice test, a comprehensive set of EmSAT Biology Sample Questions designed to help you prepare for the Emirates Standardized Test (EmSAT) in Biology. These questions cover key content areas, as well as, the emsat biology sample test incorporates various task types, mirroring the format of the actual EmSAT Biology exam. Use this emsat biology practice test to assess and enhance your knowledge in preparation for success on test day. 

EmSAT Biology Brilliance with ELMADRASAH.COM

Below are 40+ EmSAT Biology Sample Questions across various content areas with answer keys. ELMADRASAH.COM Emsat biology sample test questions are designed to cover a range of topics in biology, including the structure and function of molecules, heredity and genetic technology, the evolution and diversity of life, and ecological principles such as interdependence, energy flow, and dynamics. The Emsat biology practice test incorporates various task types, including Multiple Choice, Multi-select, Fill-in-the-Blank, and Drag and Drop.

• Phosphate in Macromolecules with in Emsat biology practice test

1. Multiple Choice:

Which of the following macromolecules contains a phosphate group?

– A) Nucleic acids

– B) Carbohydrates

– C) Lipids

– D) Proteins

Correct Answer: A) Nucleic acids

Nucleic acids, which include DNA (deoxyribonucleic acid) and RNA (ribonucleic acid), contain phosphate groups. The phosphate groups are an essential component of the nucleotide molecules that make up nucleic acids.

• Enzyme-Substrate Interaction in Emsat biology practice test

2. Multiple Choice:

Which of the following statement is correct regarding the “induced-fit model” in enzyme-substrate interaction?

– A) The structure of the active site of the enzyme is changed by the substrate.

– B) The enzyme directly binds to the substrate to form an enzyme substrate complex.

– C) The shape of the enzyme is changed by the chemical reaction.

– D) The active site of the enzyme changes its shape to accept a substrate.

Correct Answer: D) The active site of the enzyme changes its shape to accept a substrate.

The correct statement regarding the “induced-fit model” is that the active site of the enzyme changes its shape to accommodate and interact with the substrate.

• Cystic Fibrosis Allele Frequency in Emsat biology practice test

3. Multiple Choice:

Cystic fibrosis is a chronic and frequently fatal genetic disease of the body’s mucus glands. It is caused by an autosomal recessive mutation. In the European population, one out of approximately 10,000 babies is born with the disorder. What is the frequency of the cystic fibrosis allele in the European population assuming the Hardy-Weinberg conditions are met?

– A) 0.01

– B) 0.1

– C) 1.0

– D) 0.00001

Correct Answer: A) 0.01

• Gene Versions in Emsat biology practice test

4. Multiple Choice:

Each alternative version of a gene is called ______.

– A) an allele

– B) centromere

– C) a code

– D) a chromatid

Correct Answer: A) an allele

• Protein Synthesis in Emsat biology practice test

5. Multiple Choice:

Which of the following cell structures is considered as a factory for protein synthesis?

– A) Rough endoplasmic reticulum

– B) Golgi Apparatus

– C) Mitochondria

– D) Nucleus

Correct Answer: A) Rough endoplasmic reticulum

The rough endoplasmic reticulum is considered as a factory for protein synthesis. It has ribosomes on its surface, where proteins are synthesized before being transported to other cell parts or secreted from the cell.

• Fluid in Plant Root Tissue within Emsat biology practice test

6. Multiple Choice:

The diagram below represents a cross section through a plant root. A student is given samples of a fluid that is rich with water From which tissue does this fluid come?

– A) A

– B) B

– C) C

– D) D

Correct Answer: A) A

The fluid rich in water in a plant root is most likely to come from the Xylem, as it is responsible for transporting water and minerals from the roots to the rest of the plant.

• Probability of Affected Child in Emsat biology practice test

7. Multiple Choice:

The following pedigree represents the inheritance of an autosomal recessive syndrome in a family.

If the affected male in generation II marries a normal female who is homozygous for the trait, what is the possibility to have an affected child?

– A) 0%

– B) 25%

– C) 50%

– D) 100%

Correct Answer: A) 0%

Since the affected male is in generation II and is presumably affected by a recessive trait, if he marries a normal female who is homozygous for the trait (meaning she does not carry the recessive allele), all their children would be carriers but not affected. Therefore, the correct answer is 0%.

• Parsimonious Phylogenetic Tree in Emsat biology practice test

8. Multiple Choice:

A scientist is studying the phylogeny of 4 species (species 1,2,3 and 4). To this end, she sequenced a fragment of DNA and she obtained the following alignment:

Species 1      AATCGGA

Species 2      CAGGTAC

Species 3      AATCTGA

Species 4      CATGTGC

With this alignment, she constructed a phylogenetic tree using the parsimony method (a method that minimizes the number of changes on a phylogeny).

Which of the 4 phylogenetics trees below is supported by the DNA sequences?

Correct Answer: C) Species 1, Species 3, Species 2, Species 4

To determine the most parsimonious phylogenetic tree, we need to minimize the number of evolutionary changes required to explain the observed DNA sequence differences. We can count the number of differences in each pair of species:

Species 1 vs. Species 2: 6 differences

Species 1 vs. Species 3: 1 difference

Species 1 vs. Species 4: 5 differences

Species 2 vs. Species 3: 6 differences

Species 2 vs. Species 4: 7 differences

Species 3 vs. Species 4: 7 differences

The most parsimonious tree would be the one that requires the fewest changes. In this case, the phylogenetic tree supported by the DNA sequences is: Species 1, Species 3, Species 2, Species 4.

• Ecological Relationship Graph in Emsat biology practice test

9. Multiple Choice:

The ecological relationship between the different species is shown in the graph below.

What ecological relationship does the graph represent?

– A) Mutualism

– B) Extinction

– C) Commensalism

– D) Parasitism

Correct Answer: D) Parasitism

• Effect of Sucrose Concentration in Emsat biology practice test

10. Multiple Choice:

A student immersed a small piece of potato tissue in a 0.25 mol.dm-³ sucrose solution and the tissue showed no change in mass. What would the student find out when he immerses the piece in a 0.1 mol.dm-³ sucrose solution?

– A) The mass would have increased because the water potential of the cells has decreased.

– B) The mass would have decreased because the water potential of the cells has increased.

– C) The mass would have increased because the water potential of the solution has decreased.

– D) The mass would have decreased because the water potential of the solution has increased.

Correct Answer: D) The mass would have decreased because the water potential of the solution has increased.

When a plant cell is placed in a hypotonic solution (lower solute concentration than the cell), water will move into the cell through osmosis, causing the cell to swell and potentially increase in mass. In this case, the student initially placed the potato tissue in a 0.25 mol.dm⁻³ sucrose solution and observed no change in mass, indicating an isotonic solution. If the tissue is then immersed in a less concentrated solution (0.1 mol.dm⁻³ sucrose), it becomes a hypotonic solution relative to the initial condition. Water will move into the cells, causing them to swell and potentially increase in mass. 

• Hawk Population Increase in Food Web within Emsat biology practice test

11. Multiple Choice:

The diagram below represents a food web in an ecosystem. 

If the population of hawks in this area increases, What effect will this increase have on the web?

– A) The prey populations of hawks might decrease. Later, the other populations in the web might decrease.

– B) The prey populations of hawks might decrease. Later, the hawk population might remain unchanged.

– C) The prey populations of hawks might decrease. Later, the hawk population might increase.

– D) The prey populations of hawks might decrease. Later, the hawks would find another prey population.

Correct Answer: A) The prey populations of hawks might decrease. Later, the other populations in the web might decrease.

An increase in the population of hawks could lead to a decrease in the populations of their prey species. This, in turn, may affect the populations of other species in the food web, creating a cascade effect. This process is known as a trophic cascade, where changes in the abundance of one species can affect multiple trophic levels in an ecosystem.

• Mutation in mRNA Sequence within Emsat biology practice test

12. Multiple Choice:

The chart below shows the mRNA codons for different amino acids.

Given the following codon sequence:

5 ‘ AUG UCU UAC CUG GCU CGG … UAA 3 ‘

Which of the following can be described as base substitution causing a nonsense mutation in the mRNA sequence above?

– A) Substitution of UAC for UAA in the third codon

– B) Substitution of UAC for UAU in the third codon

– C) Substitution of UAC for UCC in the third codon

– D) Substitution of UAC for UGC in the third codon

Correct Answer: A) Substitution of UAC for UAA in the third codon

A base substitution causing a nonsense mutation involves changing a codon that codes for an amino acid into a stop codon. In the given sequence, UAA is a stop codon, and if it is substituted with UAC, which codes for the amino acid tyrosine, it would result in a nonsense mutation.

• Density-Dependent Factors in Emsat biology practice test

13. Multiple Choice:

Which of the following could not be considered a density-dependent factor affecting population growth?

– A) climate temperature

– B) limited nutrients

– C) build-up of toxins

– D) predation

Correct Answer: A) Climate temperature

Climate temperature is typically considered a density-independent factor as it affects all individuals in a population regardless of their density. Density-dependent factors, on the other hand, are influenced by the size or density of a population. Limited nutrients, build-up of toxins, and predation are examples of density-dependent factors, as their impact is often more pronounced as the population density increases.

• Enzyme Functions in Living Organisms within Emsat biology practice test

14. Multiple Choice – Structure and Function:

What is the primary function of enzymes in living organisms?

– A) Energy storage

– B) Cellular structure

– C) Catalyzing chemical reactions

– D) Genetic information

Correct Answer: C) Catalyzing chemical reactions

• Dominant and Recessive Alleles in Emsat biology practice test

15. Multi-select – Heredity:

Which statements are true about dominant and recessive alleles? (Select all that apply)

– A) Dominant alleles always determine the phenotype.

– B) Recessive alleles are expressed in heterozygous individuals.

– C) Dominant alleles mask the expression of recessive alleles.

– D) Recessive alleles are always lethal.

Correct Answers: A) Dominant alleles always determine the phenotype. C) Dominant alleles mask the expression of recessive alleles.

• Natural Selection and Population Variation in Emsat biology practice test

16. Fill-in-the-Blank – Evolution:

Natural selection acts on _______________ within a population.

Correct Answer: Variation

• Ecosystem Characteristics Matching in emsat biology practice test

17. Drag and Drop – Ecology:

Match the ecosystem with its primary characteristic.

– Ecosystems:

  – (i) Rainforest

  – (ii) Desert

  – (iii) Tundra

– Characteristics:

  – (a) High biodiversity

  – (b) Extreme temperature fluctuations

  – (c) Permafrost and low vegetation

Correct Match:

– (i) Rainforest – (a) High biodiversity

– (ii) Desert – (b) Extreme temperature fluctuations

– (iii) Tundra – (c) Permafrost and low vegetation

• PCR in Genetic Technology emsat biology practice test

18. Multiple Choice – Genetic Technology:

What is the purpose of PCR (Polymerase Chain Reaction) in genetic technology?

– A) Producing genetically modified organisms

– B) Cloning entire organisms

– C) Amplifying DNA segments

– D) Generating hybrid offspring

Correct Answer: C) Amplifying DNA segments

• Classification Characteristics in emsat biology practice test

19. Multi-select – Diversity of Life:

Which characteristics are used to classify organisms into different kingdoms? (Select all that apply)

– A) Cell type

– B) Number of limbs

– C) Mode of nutrition

– D) Reproductive strategies

Correct Answers: A) Cell type C) Mode of nutrition D) Reproductive strategies

• Convergent Evolution Definition in emsat biology practice test

20. Fill-in-the-Blank – Evolution:

The process by which unrelated species evolve similar traits due to adaptation to similar environments is called ______________.

Correct Answer: Convergent evolution

• Trophic Levels Arrangement in emsat biology practice test

21. Drag and Drop – Ecology:

Arrange the trophic levels in a food chain from producers to top consumers.

– Trophic Levels:

  – (i) Producers

  – (ii) Primary consumers

  – (iii) Secondary consumers

  – (iv) Tertiary consumers

Correct Order:

– (i) Producers

– (ii) Primary consumers

– (iii) Secondary consumers

– (iv) Tertiary consumers

• Mitochondria and Energy Production in emsat biology practice test

22. Multiple Choice – Structure and Function:

Which organelle is responsible for energy production in eukaryotic cells?

– A) Nucleus

– B) Mitochondrion

– C) Endoplasmic reticulum

– D) Golgi apparatus

Correct Answer: B) Mitochondrion

• Mendel’s Laws of Inheritance in emsat biology practice test

23. Multi-select – Heredity:

Which principles are part of Mendel’s laws of inheritance? (Select all that apply)

– A) Law of Dominance

– B) Law of Segregation

– C) Law of Independent Assortment

– D) Law of Gravity

Correct Answers: A) Law of Dominance B) Law of Segregation C) Law of Independent Assortment

• Commensalism Definition in emsat biology practice test

24. Fill-in-the-Blank – Ecology:

The relationship between two species where one benefits and the other is unaffected is known as ______________.

Correct Answer: Commensalism

• Biotechnological Applications Matching in emsat biology practice test

25. Drag and Drop – Genetic Technology:

Match the biotechnological application with its description.

– Applications:

  – (i) Gene therapy

  – (ii) Genetic engineering

  – (iii) Selective breeding

– Descriptions:

  – (a) Modifying an organism’s DNA

  – (b) Correcting genetic disorders in humans

  – (c) Enhancing desired traits in crops or animals

Correct Match:

– (i) Gene therapy – (b) Correcting genetic disorders in humans

– (ii) Genetic engineering – (a) Modifying an organism’s DNA

– (iii) Selective breeding – (c) Enhancing desired traits in crops or animals

• Evidence for Evolution by Natural Selection in emsat biology practice test

26. Multiple Choice – Evolution:

What evidence supports the theory of evolution by natural selection?

– A) Fossil records

– B) Personal beliefs

– C) Astrology

– D) Superstitions

Correct Answer: A) Fossil records

• Organism Classification into Phyla in emsat biology practice test

27. Multi-select – Diversity of Life:

Which characteristics are used to classify organisms into different phyla? (Select all that apply)

– A) Body symmetry

– B) Presence of a backbone

– C) Number of legs

– D) Presence of a notochord

Correct Answers: A) Body symmetry D) Presence of a notochord

• Red Blood Cells Function in emsat biology practice test

28. Fill-in-the-Blank – Structure and Function:

The main function of red blood cells is to transport ______________ in the blood.

Correct Answer: Oxygen

• Ecological Levels of Organization in emsat biology practice test

29. Drag and Drop – Ecology:

Arrange the ecological levels of organization from smallest to largest.

– Levels:

  – (i) Organism

  – (ii) Population

  – (iii) Community

  – (iv) Ecosystem

Correct Order:

– (i) Organism

– (ii) Population

– (iii) Community

– (iv) Ecosystem

• CRISPR-Cas9 in Genetic Technology emsat biology practice test

30. Multiple Choice – Genetic Technology:

What is CRISPR-Cas9 used for in genetic technology?

– A) Cloning entire organisms

– B) Editing and modifying DNA sequences

– C) Analyzing protein structures

– D) Producing genetically modified organisms

Correct Answer: B) Editing and modifying DNA sequences

• Codominance Statements in emsat biology practice test

31. Multi-select – Heredity:

Which statements are true about codominance? (Select all that apply)

– A) Both alleles are expressed in the heterozygous condition.

– B) One allele completely masks the expression of the other.

– C) It results in an intermediate phenotype.

– D) It is commonly observed in Mendelian inheritance.

Correct Answers: A) Both alleles are expressed in the heterozygous condition. C) It results in an intermediate phenotype.

• Gradualism in Evolution in emsat biology practice test

32. Fill-in-the-Blank – Evolution:

The process by which species gradually change over time through the accumulation of small genetic variations is known as ______________.

Correct Answer: Gradualism

• Ecological Interactions Matching in emsat biology practice test

33. Drag and Drop – Ecology:

Match the ecological interactions with their descriptions.

– Interactions:

  – (i) Predation

  – (ii) Mutualism

  – (iii) Parasitism

  – (iv) Competition

– Descriptions:

  – (a) Both species benefit

  – (b) One species benefits, the other is harmed

  – (c) One species benefits without harming the other

  – (d) Interaction where one organism kills and consumes another

Correct Match:

– (i) Predation – (d) Interaction where one organism kills and consumes another

– (ii) Mutualism – (a) Both species benefit

– (iii) Parasitism – (b) One species benefits, the other is harmed

– (iv) Competition – (c) One species benefits without harming the other

• Ribosome Synthesis in emsat biology practice test

34. Multiple Choice – Structure and Function:

Which cellular organelle is responsible for the synthesis of proteins?

– A) Nucleus

– B) Ribosome

– C) Golgi apparatus

– D) Endoplasmic reticulum

Correct Answer: B) Ribosome

• Genetic Engineering Ethics in emsat biology practice test

35. Multi-select – Genetic Technology:

What are potential ethical concerns associated with genetic engineering? (Select all that apply)

– A) Genetic discrimination

– B) Enhanced agricultural productivity

– C) Loss of biodiversity

– D) Human cloning

Correct Answers: A) Genetic discrimination C) Loss of biodiversity D) Human cloning

• Organism’s Ecological Niche in the emsat biology practice test

36. Fill-in-the-Blank – Ecology:

The role of an organism in an ecosystem, including its interactions with other organisms and the physical environment, is known as its ______________.

Correct Answer: Ecological niche

• Natural Selection Steps in emsat biology practice test

37. Drag and Drop – Evolution:

Arrange the steps of natural selection in the correct order.

– Steps:

  – (i) Variation in traits

  – (ii) Overproduction of offspring

  – (iii) Differential survival and reproduction

  – (iv) Inheritance of favorable traits

Correct Order:

– (i) Variation in traits

– (ii) Overproduction of offspring

– (iii) Differential survival and reproduction

– (iv) Inheritance of favorable traits

• Vertebrates’ Defining Characteristic in emsat biology practice test

38. Multiple Choice – Diversity of Life:

What is a defining characteristic of vertebrates?

– A) Presence of a backbone

– B) Exoskeleton

– C) Segmented body

– D) Absence of limbs

Correct Answer: A) Presence of a backbone

• Human Respiratory System Structures in emsat biology practice test

39. Multi-select – Structure and Function:

Which structures are part of the human respiratory system? (Select all that apply)

– A) Lungs

– B) Heart

– C) Trachea

– D) Stomach

Correct Answers: A) Lungs C) Trachea

• DNA Cloning Process in emsat biology practice test

40. Fill-in-the-Blank – Genetic Technology:

The process of copying DNA to produce multiple identical copies is known as ______________.

Correct Answer: DNA cloning

• Ecological Pyramid Matching in emsat biology practice test

41. Drag and Drop – Ecology:

Match the ecological pyramid with its correct type.

– Pyramids:

  – (i) Pyramid of numbers

  – (ii) Pyramid of biomass

  – (iii) Pyramid of energy

– Types:

  – (a) Represents the total mass of living organisms at each trophic level

  – (b) Represents the number of organisms at each trophic level

  – (c) Represents the flow of energy through different trophic levels

Correct Match:

– (i) Pyramid of numbers – (b) Represents the number of organisms at each trophic level

– (ii) Pyramid of biomass – (a) Represents the total mass of living organisms at each trophic level

– (iii) Pyramid of energy – (c) Represents the flow of energy through different trophic levels

• Vestigial Structure Definition in emsat biology practice test

42. Multiple Choice – Evolution:

What is a vestigial structure?

– A) A structure that has no function in the organism

– B) A structure inherited from ancestors but has lost its original function

– C) A structure that is essential for survival

– D) A newly evolved structure

Correct Answer: B) A structure inherited from ancestors but has lost its original function

• Sex-linked Traits Statements in emsat biology practice test

43. Multi-select – Heredity:

Which statements are true about sex-linked traits? (Select all that apply)

– A) They are carried on autosomes.

– B) They are more common in females.

– C) They are passed from father to son.

– D) Males are more commonly affected.

Correct Answers: C) They are passed from father to son. D) Males are more commonly affected.

• Parasitism Relationship within emsat biology practice test

44. Fill-in-the-Blank – Ecology:

The relationship between two species where one benefits, and the other is harmed, is known as ______________.

Correct Answer: Parasitism

• Biotechnological Applications Matching in emsat biology practice test

45. Drag and Drop – Genetic Technology:

Match the biotechnological application with its description.

– Applications:

  – (i) Polymerase Chain Reaction (PCR)

  – (ii) Gel electrophoresis

  – (iii) Recombinant DNA technology

– Descriptions:

  – (a) Separates DNA fragments based on size

  – (b) Amplifies specific DNA sequences

  – (c) Combines genes from different sources

Correct Match:

– (i) Polymerase Chain Reaction (PCR) – (b) Amplifies specific DNA sequences

– (ii) Gel electrophoresis – (a) Separates DNA fragments based on size

– (iii) Recombinant DNA technology – (c) Combines genes from different sources

• Golgi Apparatus Function in emsat biology practice test

46. Multiple Choice – Structure and Function:

What is the function of the Golgi apparatus in a eukaryotic cell?

– A) Protein synthesis

– B) Lipid synthesis

– C) Packaging and modification of proteins

– D) Energy production

Correct Answer: C) Packaging and modification of proteins

• Genetic Fingerprinting Techniques in emsat biology practice test

47. Multi-select – Genetic Technology:

Which techniques are used in genetic fingerprinting? (Select all that apply)

– A) PCR (Polymerase Chain Reaction)

– B) Gel electrophoresis

– C) Cloning

– D) DNA sequencing

Correct Answers: A) PCR (Polymerase Chain Reaction) B) Gel electrophoresis D) DNA sequencing

• Ontogeny Study in emsat biology practice test

48. Fill-in-the-Blank – Evolution:

The study of the development and changes in organisms throughout their lifetime is known as ______________.

Correct Answer: Ontogeny

• Symbiotic Relationships Matching in emsat biology practice test

49. Drag and Drop – Ecology:

Match the symbiotic relationships with their descriptions.

– Relationships:

  – (i) Mutualism

  – (ii) Commensalism

  – (iii) Parasitism

– Descriptions:

  – (a) Both species benefit

  – (b) One species benefits, the other is unaffected

  – (c) One species benefits, the other is harmed

Correct Match:

– (i) Mutualism – (a) Both species benefit

– (ii) Commensalism – (b) One species benefits, the other is unaffected

– (iii) Parasitism – (c) One species benefits, the other is harmed

• Arthropods’ Defining Characteristic in emsat biology practice test

50. Multiple Choice – Diversity of Life:

What is a defining characteristic of arthropods?

– A) Vertebral column

– B) Exoskeleton made of chitin

– C) Radial symmetry

– D) Closed circulatory system

Correct Answer: B) Exoskeleton made of chitin

• Cell Membrane Functions in emsat biology practice test

51. Multi-select – Structure and Function:

Which statements are true about cell membrane functions? (Select all that apply)

– A) Regulating the passage of substances into and out of the cell

– B) Providing structural support to the cell

– C) Containing genetic material

– D) Facilitating cell communication

Correct Answers: A) Regulating the passage of substances into and out of the cell D) Facilitating cell communication

• Cloning Process in emsat biology practice test

52. Fill-in-the-Blank – Genetic Technology:

The process of creating genetically identical copies of an organism is known as ______________.

Correct Answer: Cloning

• Biological Organization Sequence in emsat biology practice test

53. Drag and Drop – Evolution:

Arrange the following terms in the correct sequence of biological organization from simplest to most complex.

– Terms:

  – (i) Cells

  – (ii) Tissues

  – (iii) Organs

  – (iv) Organ systems

Correct Order:

– (i) Cells

– (ii) Tissues

– (iii) Organs

– (iv) Organ systems

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