Example of questions from Biology entrance test

You should complete each of the following sentences by circling the letter of the correct response (there is just one correct answer).

1. Johann Gregor Mendel
a) studied the immunity in humans
b) performed the first public autopsy
c) introduced the vaccination against tuberculosis
d) explained the mechanisms of heredity
e) founded ethology

2. The first mammals evolved in the period known as
a) Triassic
b) Jurassic
c) Paleozoic
d) Cretaceous
e) Cambrian

3. The protein coat of a virion´s core is called the
a) plasma shell
b) capsid
c) sheath
d) cell wall
e) cuticle

4. During G1, S, and G2 phases, a cell is said to be in
a) cytokinesis
b) the process of mitosis
c) metaphase
d) the process of meiosis
e) interphase

5. Endoplasmic reticulum deals with
a) the synthesis of carbohydrates and proteins
b) the synthesis of DNA and carbohydrates
c) the synthesis of nucleic acids
d) the catabolism of steroids
e) the synthesis of lipids and proteins

6. The fibrous envelope of a heart is known as
a) peritoneum
b) endocardium
c) pericardium
d) epicardium
e) pleura

7. The ectoderm gives rise to
a) muscle
b) the heart
c) the nervous system
d) the lungs
e) all of the above

8. Bile is secreted by the
a) small intestine
b) gall bladder
c) pancreas
d) liver
e) stomach

9. The sex of a human individual is ultimately determined by
a) autosomes
b) the presence or absence of a Y chromosome
c) the presence of an X chromosome
d) the absence of an X chromosome
e) none of the above

10. A homozygote is an individual
a) with diploid number of chromosomes
b) with both male and female functional reproductive organs
c) with a pair of identical alleles of a given gene
d) whose chromosomes form pairs
e) none of the above

11. All the alleles present in a population are collectively known as
a) population genetics
b) the genotype
c) the phenotype
d) the gene pool
e) the population gene

12. Entomology studies
a) molluscs
b) spiders
c) animals that hibernate in winter
d) antigenic properties of animals
e) insects

13. Malaria is caused by the protozoan
a) Anopheles
b) Trypanosoma
c) Leishmania
d) Plasmodium
e) Entamoeba

14. The excretory organs found in flatworms are
a) metanephridia
b) protonephridia
c) contractile vacuoles
d) Malpighian tubules
e) nephridiopores

15. The body temperature of poikilotherms
a) is restricted to a narrow range
b) remains constant
c) relies on ATP for maintenance
d) tracks that of the environment
e) is controlled by efficient internal mechanisms

16. The skin of reptiles
a) is moist with many mucous and poison glands
b) is covered with cycloid dermal scales
c) is covered with placoid scales
d) is covered with ctenoid dermal scales
e) is covered with epidermal scales

17. Eutrophication of fresh water bodies is caused by excessive concentration of
a) carbon dioxide
b) nitrogenous substances
c) sulphur
d) oxygen
e) iron

18. The most stable ecosystem of the following examples is
a) a meadow
b) the climax stage of a spruce forest
c) an orchard
d) a spruce plantation
e) a corn field

19. The term mycorrhiza refers to
a) the association between land plants and fungi
b) the association between bacteria and roots
c) leguminous plants
d) b and c
e) all of the above