Biology Quiz Multiple Choice Questions Online - Set 22

1) The notable hardness of bone is attributed to
A) the presence of inorganic hydroxyapatites
B) the presence of glycoproteins
C) the presence of collagen fibers
D) the presence of cartilage
Answer: A) the presence of inorganic hydroxyapatites

2) Rubella diseases is described first by the scientist
A) Abu Baqre
B) Ronald Ross
C) Laveris
D) Darwin
Answer: A) Abu Baqre

3) All bones stop growing by the end of adolescence.
A) TRUE
B) FALSE
Answer: B) FALSE

4) Which is a function of a protein macromolecule?
A) Cushions the internal organs of an animal
B) Provides the building instructions for living things
C) Makes up the connective tissue in tendons
D) Makes the leaves of plants waterproof
Answer: C) Makes up the connective tissue in tendons

5) Cretinism is due to the disorder of the glands
A) Thymus
B) Parathyroid
C) Thyroid
D) Adrenal
Answer: C) Thyroid

6) Higher doses of barbiturates result in
A) Lack of emotional control
B) Impaired thinking
C) Both A & B
D) None of the above
Answer: C) Both A & B

7) Which among the following hormone can be used as a drug to treat cardiac arrest and some other cardiac problems?
A) Epinephrine
B) Insulin
C) Thyroxin
D) Calcitonin
Answer: A) Epinephrine

8) The schwann cell forms a myelin sheath around the
A) nodes of Ranvier
B) dendrites
C) nucleus
D) axon
Answer: D) axon

9) Which of these is NOT a lipid?
A) Wax
B) Cholesterol
C) RNA
D) Phospholipid
Answer: C) RNA

11) What is scientific name of "Cotton"  ?
A) Azadhirachta Indica
B) Phaseolies auicus
C) Gossypium Herbaceum
D) Ficus Benghalensis
Answer: C) Gossypium Herbaceum

12) Which bacteria cause the greatest harm in the food industry?
A) Recycling
B) Digestive
C) Fermenting
D) Pathogenic
Answer: D) Pathogenic

13) The most healthy edible oil for heart is
A) Almond Oil
B) Sesame Oil
C) Mustard Oil
D) Olive Oil
Answer: D) Olive Oil

14) What base is found in RNA but not in DNA?
A) Uracil
B) Cytosine
C) Adenine
D) Guanine
Answer: A) Uracil

15) Atrophy is a condition that occurs when
A) muscle decreases in size and function because of disease or trauma
B) carbon dioxide, lactic acid, and other wastes accumulate in the muscle
C) increased use of skeletal muscle causes an increase in its strength
D) the tendons that attach muscle to bone become stretched or injured
Answer: A) muscle decreases in size and function because of disease or trauma

16) Which would provide the body with the most energy?
A) Breaking a single carbon bond
B) Forming bonds between two amino acids
C) Creating bonds to form a carbohydrate
D) Breaking the bonds in a monosaccharide
Answer: D) Breaking the bonds in a monosaccharide

17) The process of bones increasing in width is known as
A) appositional growth
B) closing of the epiphyseal plate
C) concentric growth
D) long bones reaching adult length and width
Answer: A) appositional growth

18) Factors that aid venous return include all except
A) pressure changes in the thorax
B) urinary output
C) activity of skeletal muscles
D) venous valves
Answer: B) urinary output

19) The rate of heartbeat is accelerated by the harmone
A) adrenaline
B) acetylcholine
C) thyroxine
D) pituitrin
Answer: A) adrenaline

20) Which of the following leads to the production of urea?
A) Synthesis of protein from amino acids
B) Oxidation of glucose
C) Degradation of amino acids
D) Incomplete oxidation of fatty acids
Answer: C) Degradation of amino acids

21) Which of the following crops  would be preffered for sowing in order to enrich the soil with nitrogen?
A) Wheat
B) Mustard
C) Sunflower
D) Gram
Answer: D) Gram

22) The functional connection between two neurons is a
A) Axon
B) Synapse
C) Neuroglia
D) Dendrites
Answer: B) Synapse

24) Do plant cells have Mitochondria?
A) Yes
B) No
C) Can't be determined
D) None
Answer: A) Yes

25) Which step happens first in DNA replication?
A) Initiation
B) Elongation
C) Termination
D) None of the above
Answer: A) Initiation

26) Which of the following is an abnormal constituent of urine?
A) Creatinine
B) Uric acid
C) Glucose
D) Urea
Answer: C) Glucose

27) Process occurs in cytoplasm
A) Glycolysis
B) Cell division
C) Both A & B
D) None of the above
Answer: C) Both A & B

28) The Mode of nutrition in which particulate food is devoured is
A) holozoic
B) holophytic
C) saprophytic
D) Parasitic
Answer: A) holozoic

29) The NADPH required for the calvin cycle comes from
A) Reactions initiated in photosystem 1
B) Citric acid cycle
C) Reactions initiated in photosystem 2
D) Glycolysis
Answer: C) Reactions initiated in photosystem 2

30) Bacteria divide by
A) Binary Fusion
B) Cytokinesis
C) Binary Fission
D) Both B & C
Answer: C) Binary Fission

31) Why are yeast cells frequently used as hosts for cloning?
A) they are eukaryotic cells
B) they do not have plasmids
C) only yeast cells allow the gene to be cloned
D) they easily form colonies
Answer: A) they are eukaryotic cells

32) Plant development is influenced by
A) quality, quantity and duration of light
B) quality and duration of light
C) quality and quantity of light
D) quality of light only
Answer: A) quality, quantity and duration of light

34) In ovaries, the final products of meiosis are
A) haploid gametes
B) diploid gametes
C) Both A & B
D) None of the above
Answer: A) haploid gametes

35) What process accounts for species diversity?
A) Predation
B) Mitosis
C) Symbiosis
D) Meiosis
Answer: D) Meiosis

36) Which activity is accomplished using the genetic code?
A) mutation
B) DNA can be made into mRNA
C) DNA formation
D) None of the above
Answer: B) DNA can be made into mRNA

37) Polyploidy is involved in which of the following examples?
A) XYY males
B) Some plants alternate between haploid and diploid phases
C) XO females
D) A normal watermelon has 22 chromosomes but seedless watermelons have 33 chromosomes
Answer: D) A normal watermelon has 22 chromosomes but seedless watermelons have 33 chromosomes

38) What are the three parts of the Nucleotide?
39) Which of the following are involved directly in pulmonary circulation?
A) left ventricle, aorta, and inferior vena cava
B) right atrium, aorta, and left ventricle
C) superior vena cava, right atrium, and left ventricle
D) right ventricle, pulmonary artery, and left atrium
Answer: D) right ventricle, pulmonary artery, and left atrium

41) Which virus is not associated with cancer?
A) Epstein-Barr virus
B) Papillomavirus
C) Retrovirus
D) Hepatitis virus
Answer: C) Retrovirus

42) Example of a single celled organism
A) Algae
B) Amaeba
C) Paramaecium
D) All of the above
Answer: D) All of the above

43) Which of the following is not an enzyme?
A) Oxytocin
B) Trypsin
C) Pepsin
D) Ptyalin
Answer: A) Oxytocin

44) Amino acids can be distinguished from one another by
A) type of bond between the R group and the rest of the molecule
B) the number of R groups found on the amino acid molecules
C) the chemical properties of their R groups
D) the chemical properties of the amino and carboxyl groups
Answer: C) the chemical properties of their R groups

46) Where does most digestion take place?
A) Stomach
B) Large intestine
C) Small intestine
D) Mouth
Answer: C) Small intestine

47) The sex of a newborn baby is determined by the chromosome inherited from
A) The Father
B) The Mother
C) The Father's Father
D) Both A & B
Answer: A) The Father

48) Branch of biology in which we study about relationship between living and their environment
A) Physiology
B) Genetics
C) Ecology
D) Geology
Answer: C) Ecology

49) What happens at the synapse between two neurons?
A) electrical signals are converted into chemical
B) chemical signals are converted into physical
C) physical signals are converted into chemical
D) None of the above
Answer: A) electrical signals are converted into chemical

50) Autoimmune diseases associated with vitiligo
A) Thyroiditis
B) Diabetes mellitus
C) Psoriasis
D) All of the above
Answer: D) All of the above

General Knowledge: Also Read: