ENTRANCE TEST BIOLOGY for 2017/2018 Academic Year

ENTRANCE TEST –BIOLOGY for 2017/2018 academic year

TRAKIA UNIVERSITY, STARA ZAGORA

Mark the correct answer

1. The following sequence ATTCGCTATCGcould be found in:

1. Ribonucleic acid (RNA)
2. Protein
3. Glycogen
4. Deoxyribonucleic acid (DNA)

1. In the formation of a macromolecule, what type of bond would join two amino acid subunits?

a. phosphodiester bond

b. peptide bond

c. Ionic bonds

d. Hydrogen bonds

1. The sequence of amino acids in a polypeptide is known as?

a. primary structure

b. secondary structure

c. tertiary structure

d. quaternary structure

1. Glycogen, starch, and cellulose are all polymers of:

a. fructose

b. glucose

c. galactose

d. ribose

1. What term is used to describe the process by which DNA is copied to produce two daughter DNA molecules?

1. replication.
2. transcription
3. translation
4. reproduction

1. Which of the following is NOT TRUE about DNA copied?

1. It enables a whole amount of DNA to be amplified.
2. It cuts DNA into numerous small fragments
3. It is performs in semiconservative manner
4. process maintains cell reproduction

1. If the DNA sequences 5’ CTTCAGAAC 3’ is transcribed, which of the following is considered of mRNA?

1. 5’ CAA GAC GGC 3’
2. 5’ GAA GTC TTG 3’
3. 3’ GAAGUCUUG 5’
4. 3’ GUU GUC CCG 5’

1. What role does messenger RNA play in the synthesis of proteins?

1. catalyzes the process
2. binds amino acid and carries it to the growing end of a polypeptide chain
3. carries the genetic information copied from DNA
4. modifies the protein after synthesis

1. Which of the following properties of life is common to both cellsand viruses?

1. realizing of genetic materials
2. growth
3. metabolism
4. cell division

1. All living organisms maintain a balance with environment through?

1. development
2. evolution
3. homeostasis
4. metabolism

1. Which of the following organelle is specific for both pro- and eukaryotic cells?

1. Ribosomes
2. Golgiapparatus
3. Lysosome
4. Endoplasmatic reticulum

1. Which of the following organelle could be described as a system of internal membranes within the cytoplasm?

1. Ribosomes
2. Lysosomes
3. Cytoskeleton
4. Endoplasmatic reticulum

1. Which of the following organelle could be described as rod-shaped organelles bound by a double membrane, responsible for cellular respiration?

1. Ribosomes
2. Mitochondria
3. Golgi apparatus
4. Lysosomes

1. Which cellular organelle is responsible for exocytosis?

1. Ribosomes
2. Mitochondria
3. Lysosomes
4. Golgi apparatus

1. An infectious agent that appears to have no nucleic acid is a?

1. Virus
2. Bacteria
3. Prion
4. All of the above

1. After mitosis of a diploid cellis formed:

1. Two diploid cells
2. Twohaploid cells
3. Fourhaploid cells
4. One tetraploid cell

1. Whenthe chromosomesare the most condensed, the phase is?

1. prophase
2. metaphase
3. anaphase
4. thelophase

1. Genetic diversity is greatest in?

1. asexual reproduction
2. sexual reproduction
3. binary fission
4. budding

1. Fertilization results in?

1. A zygote
2. Diploid cell
3. A cell with unique genome
4. All of the above

1. Which of the following statements about hermaphroditism is true?

1. The presence of male and female reproductive organs in one individual
2. is a normal condition for some worms and plants
3. enabling a form of self-fertilization
4. All of the above

1. If there are 20 chromatids in dividing cell, how many chromosomes are there?

1. 20
2. 40
3. 10
4. 5

1. In whichphase ofmitosisthe nuclear membrane is disappeared?

1. prophase
2. metaphase
3. anaphase
4. telophase

1. Normal human gametes are?

1. haploid
2. diploid
3. triploid
4. tetraploid

1. Which of the following statements about heterozygous genotype is true?

1. Have two dominant alleles
2. Have two receive alleles
3. Have two different alleles
4. Have two identical alleles

1. Which of the following is found during female gamete formation from a primary germ line?

1. Accumulation of yolk
2. Generation of three polar body
3. Formation of one functional gamete
4. All of the above

1. An X-linked dominant gene causesa disease in human. What is theprobability ofgiving birth toa sickboyby a womanwhose fatherhasthe disease?

1. 0 %
2. 50%
3. 25%
4. 100%

1. Autotrophic organisms obtain their nutrition by?

1. Making food by photosynthesis
2. They feed ondecaying organic matter
3. They feed on living plants only
4. They feed on living animals only

1. Parasitic organisms obtain their nutrition by?

1. Making food by photosynthesis
2. They feed ondecaying organic matter
3. They feed on living plants only
4. Using organic matter in living organisms

1. Charles Darwin discussed all of the followingEXCEPT?
2. Natural selection tends to remove thoseorganisms that are poorly adapted to theirenvironments.
3. Individuals in a population compete withone another for limited resources.
4. Gene mutations are the source of variationfor evolution.
5. Organisms tend to produce more offspringthan can survive in each generation.

1. Albumin is themost typical for:

1. Lymph node
2. blood
3. muscle
4. nervous

1. The gas exchange within the lungs proceed in:

1. alveoli
2. bronchi
3. trachea
4. larynx

1. Which of the following statements about smooth muscles is true?

1. Smooth muscleis found within the walls of gut
2. smooth muscle is under conscious control
3. smooth muscle is used to effectskeletalmovement
4. smooth muscle cellscontainproteinfilaments ofmyelin

1. Which of the following is NOT TRUE about Pepsin?

1. is the main gastric enzyme
2. is produced in its inactive form pepsinogen
3. breaks down the proteins into peptide fragments and amino acids
4. breaks down the carbohydrates into simple sugars such as glucose

1. Which type of muscles possesses the capability of automatic rhythmic contractions?

1. skeletal muscle
2. smooth muscle
3. cardiac muscle
4. all types of muscles

1. Which is the main artery of the body that originates in the left ventricle of the heart?

1. Vena cava
2. Pulmonary artery
3. Aorta
4. brachiocephalic artery