Aptitude/Aptitude Mcq Questions Enzymes Sample Test,Sample questions

Question:
A cofactor made of inorganic ion which is detachable is called

1.Prosthetic group

2.Coenzyme

3.Activator

4.Cofactor


Question:
A genome is

1.Appearance of an individual

2.Genetic basis of few characters

3.Full set of genes of an individual

4.All of these


Question:
According to Lamarch evolution occurred as the result of

1.Natural selection

2.The theory of recapitulation

3.Inheritance of acquired characters

4.Over production


Question:
All of the following are involved in nitrification except

1.Nitrobacter

2.Nitrosomonas

3.Rhizohium

4.All of these


Question:
All of the following veins carry deoxygenated blood except

1.Superior vena cava

2.Inferior vena cava

3.Hepatic vein

4.Pulmonary vein


Question:
An activated enzyme consisting of polypeptide chain and a cofactor is called:

1.Apoenzyme

2.Holoenzyme

3.Activated enzyme

4.Both b and c


Question:
Animals with greatest number of similarities are grouped together in a/an

1.Phylum

2.Family

3.Genus

4.Order


Question:
Biological molecules (proteins) which catalyze a biochemical reaction and remain unchanged after completion of reaction are called

1.Cofactor

2.Coenzymes

3.Activator

4.Enzymes


Question:
Competition between species will be greatest if they attempt to occupy the same

1.Ecosystem

2.Community

3.Habitat

4.Niche


Question:
Exposure to low temperature stimulates plants to flower. This is called

1.Photoperiodism

2.Thermotropism

3.Vernalisation

4.Thermoregulation


Question:
Genes will not be found in gene pairs in the

1.Muscle cell of worm

2.Uterine cells of dog

3.Sperm cells of frog

4.Guard cells of leaf


Question:
How many moles of carbon dioxide are produced by complete oxidation of one mole of puruvic acid?

1.1

2.2

3.3

4.6


Question:
Hunger pangs usually begin ______ after the previous meal.

1.2-4 hours

2.6-8 hours

3.10-12 hours

4.12-24 hours


Question:
If a plasmolysed plant cell is placed in water the cell will

1.Burst

2.Be Killed

3.Be deplasmolysed

4.Show no change in it


Question:
In humans the number of tetrads formed during mitosis is

1.23

2.46

3.0

4.1


Question:
In most ecosystems the greatest amount of energy flows through the

1.Secondary consumers

2.Herbivores

3.Carnivores

4.Decomposers


Question:
In which of the following location enzymes controlling cellular respiration are present?

1.Nucleus

2.Chlorophast

3.Milochondria

4.Ribosome


Question:
Kangaroo rat most probably would be found in

1.Tropical rain forest

2.Tundra

3.Grass land

4.Desert


Question:
Scurvy and beri - beri and caused by the deficiency of

1.Vitamin B and C

2.Vitamin B and D

3.Vitamin C and B

4.Vitamin A and B


Question:
Sebum produced from sebaceous glands in a mammal helps in

1.Protection against micro organisms

2.Temperature regulation

3.Excretion

4.All of these


Question:
Sleep movements are a type of

1.Turgor movements

2.Growth movements

3.Tactic movements

4.Paratonic movments


Question:
The basic structural unit of a chromosome is

1.The centromere

2.Nuceleosome

3.Telomere

4.Histone


Question:
The cells present in testes and secrete testosterone are

1.Sertoli cells

2.Germinal cell

3.Interstitial cells

4.Spermatocyte


Question:
The discease in which transmembrane carrier for the chloride ion is not produced is

1.Hyperchloesterolemia

2.Cystic fibrosis

3.Severe combined immunodeficiency syndrome

4.AIDS


Question:
The first eukarotes appeared about ______ years ago

1.1.5 billion

2.2.5 billion

3.3.5 billion

4.4.5 billion


Question:
The first stage of development in which a cavity appears is the

1.Neurula

2.Morula

3.Gastrula

4.Balastula


Question:
The food of hydra consists of

1.Humus

2.Detritus

3.Dead microscopic animals

4.Small crustaceans


Question:
The greatest diversity of animals in the lake is found in which one of the following zones?

1.Limmnetic zone

2.Littoral zone

3.Profundal zone

4.None of these


Question:
The major constituent of blood plasma is

1.Protein

2.NaCl

3.Water

4.Cholesterol


Question:
The one that stores calcium

1.Sarcolemma

2.Sarcoplasm

3.Sarcoplasmic reticulum

4.Cytosol


Question:
The one which can break open a plasmid ring is

1.Ligase enzyme

2.Primase enzyme

3.Restriction endonuclease

4.ATP-ase enzyme


Question:
The one which causes contraction of wall of the uterus during and after birth

1.ADH

2.MSH

3.Oxytocin

4.Progesterone


Question:
The one which is a weed killer

1.IAA

2.NAA

3.2 4-D

4.GA


Question:
The one which is present in all aerobic species

1.Cytohrome c

2.Cytochrome a

3.Cytochrome a3

4.Cytochrome b


Question:
The red green colour blindness is sex linked recessive condition in man. A father with normal vision and a color blind mother world expect to produce.

1.Color blind sons and daughter with normal vision

2.Sons with normal vision and color blind daughters

3.Color blind sons colour blind daughters and daughters with normal vision

4.Sons with normal vision colour blind daughter and daughters with normal vision


Question:
The sequence of 3 bases on tRNA which is complementary to condon of mRNA is called

1.Gene

2.Anticodon

3.Code

4.Codon


Question:
The structure which has been formed or modified from gill pouches in humans is

1.Gills

2.Eustachian tube

3.Middle ear

4.Lungs


Question:
The type of learning in which there is loss or decrease in response to repeated stimuli

1.Imprinting

2.Habituation

3.Latent learning

4.Insight learning


Question:
The windpipe or trachea lies

1.Dorsal to oesophagus

2.Ventral to oesophagus

3.Lateral to oesophagus

4.None of these


Question:
What is the characteristic feature of consumers?

1.Autotroph

2.Heterotroph

3.Parasite

4.Saprophyte


Question:
What percentage of light reaching the earth is used in photosynthesis?

1.25%

2.10%

3.5%

4.1%


Question:
Which of the following is the empirical formula of chlorophyll b?

1.C55H70O5N4Mg

2.C55H72O6N4Mg

3.C55H70O6N4Mg

4.C55H72O5N4Mg


Question:
Which of the following relationship is NOT an example of symbiosis?

1.Rhizobium and leguminous plants

2.Marchantia sporophyte and gametophyte

3.Algae and fungi in a lichen

4.Mycorrhizal fungi and tree roots


Question:
Which one forms the raw material for coenzymes?

1.Vitamins

2.Carbohydrates

3.Proteins

4.Metals


Question:
Which one of the following is correct sequence of stages of prophase 1 of meiosis

1.Diakinesis diplotene pachytene leptotene zygotene

2.Zygotene leptotene pachytene diplotene diakinesis

3.Leptotene zygotene pachytene diplotene diakinesis

4.Pachytene leptotene diplotene zygotene diakinesis


Question:
Which one of the following is most likely to occur in an animal during winter?

1.Activation of sweat glands

2.Dilation of skin blood vessels

3.Panting

4.Thermogenesis


Question:
Which one of the following stage preceeds mitosis during cell cycle?

1.G1 phase

2.S phase

3.G2 phase

4.M phase


Question:
Which one of the following syndrome is the result of meiotic non dysjunction?

1.Klinefelters syndrome

2.Turners syndrome

3.Downs syndrome

4.All of these


Question:
Which statement about enzyme is incorrect:

1.Some of them consist solely of protein with no non protein part.

2.They catalyze a chemical reaction without being utilized.

3.All enzymes are fibrous Proteins.

4.They without their cofactor are called apoenzyme


Question:
Which statement correctly describes the transcription of DNA?

1.It produces another DNA molecule

2.It produces mRNA

3.It is a semi conservation process

4.It occurs at surface of ribosomes


More MCQS

  1. Time and Work mcq for competitive exams
  2. Percentage mcq for competitive exams
  3. Number system mcq for competitive exams
  4. Number series mcq for competitive exams
  5. Average mcq for competitive exams
  6. Area mcq for competitive exams
  7. Aptitude Mcq Questions Enzymes
  8. Aptitude Mcq Questions Biology Diagnostic Test
  9. Aptitude Mcq Questions Kingdom Monera
  10. Aptitude Time and Distance Formulae Set 1
  11. Aptitude Time and Distance Formulae Set 2
  12. Aptitude Time and Distance Formulae Set 3
  13. Aptitude Questions Time and Work Set 1
  14. Aptitude Questions Time and Work Set 2
  15. Aptitude Questions Time and Work Set 3
  16. Aptitude Ratio and Proportion Set 1
  17. Teaching Aptitude Mcq Question Set 1
  18. Teaching Aptitude Mcq Question Set 2
  19. Aptitude Ratio and Proportion Set 2
  20. Teaching Aptitude Mcq Question Set 3
  21. Aptitude Ratio and Proportion Set 3
  22. Aptitude Simple Interest Set 1
  23. Aptitude Simple Interest Set 2
  24. Aptitude Averages Mcq Set 1
  25. Aptitude Averages Mcq Set 2
  26. Aptitude Pipes and Cisterns Mcq set 1
  27. Aptitude Compound Interest Set 1
  28. Aptitude Compound Interest Set 2
  29. Aptitude Profit and Loss Set 1
  30. Partnership Aptitude Questions
  31. Aptitude Races and Games
  32. Aptitude Mixtures and Allegations
  33. Aptitude Simple Equations
  34. Aptitude Indices and Surds Mcq
  35. Aptitude Permutations and Combinations Mcq
  36. Aptitude Simplification and Approximation Mcq Set 1
  37. Aptitude Simplification and Approximation Mcq Set 2
  38. Aptitude Problems on Trains
  39. Aptitude Boats and Streams Set 1
  40. Aptitude Boats and Streams Set 2
  41. Aptitude Areas Mcq Set 1
  42. Aptitude Areas Mcq Set 2
  43. Aptitude Areas Mcq Set 3
  44. Aptitude Problems on L.C.M and H.C.F Set 1
  45. Aptitude Problems on L.C.M and H.C.F Set 2
  46. Aptitude Problems on Numbers Set 1
  47. Aptitude Volumes Mcq
  48. Aptitude Odd Man Out
  49. Aptitude Percentages Mcq
  50. Aptitude Quadratic Equations
  51. Aptitude Mensuration
  52. Aptitude Probability
  53. Aptitude Mcq Questions Set 1
  54. Aptitude Mcq Questions Set 2
  55. General Aptitude MCQ
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!