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Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Classification of Lipids

MCQ on Classification of Lipids

Multiple Choice Questions on Classification of Lipids

1. Which of the following is a non-glyceride lipid?

a) Phospholipids

b) Fats

c) Oils

d) Waxes

This is a short 8 minute summary on Classification of Lipids

2. Which of the following is true regarding saturated fatty acids?

a) double bonds are absent

b) loosely packed

c) low melting point

d) liquid at room temperatures


3. Which of the following is highly recommended for consumption as part of a healthy diet?

a) saturated fatty acid

b) cis-unsaturated fatty acid

c) Trans unsaturated fatty acid

d) cis saturated fatty acids


4. Low water solubility of fatty acids is due to?

a)  the long fatty acid chains

b) less number of double bonds

c) both a and b

d) more number of double bonds


5. A triglyceride is made up of

a) 3 fatty acids joined to 1 glycerol by ester linkage

b) 1 fatty acid joined to 3 glycerol by ester linkage

c) 3 fatty acids joined to 1 glycerol by ether linkage

d) 2 fatty acids and 1 phophate joined to 1 glycerol by ester linkage


6. A phospholipid consists of a

a) polar phosphate hydrophilic tail group and hydrophobic fatty acid head

b) non-polar phosphate containing head group and polar fatty acid tail

c) polar phosphate containing hydrophilic head group and hydrophobic fatty acid tail

d) non-polar phosphate containing head group and non-polar fatty acid tail


7. A phospholipid consists of

a) 3 Fatty acid+ 1 Glycerol + phosphate group

b) 2 Fatty acid+ 1 Glycerol + phosphate group + attached alcohol

c) 1 Fatty acid+ 3 Glycerol + phosphate group

d) 2 Fatty acid+ 1 Glycerol + phosphate group


8. Which of the following statement is true regarding waxes?

a) made up of long fatty acid chains esterified to long-chain alcohols

b) hydrophobic in nature

c) Present on leaf surface and bird feathers

d) all of the above


9. Sphingolipids are similar to phospholipids, except glycerol backbone is replaced by

a) Choline

b) sphingosine

c) fatty acid

d) phosphate


10. Steroids consists of

a) 17 C atoms in four fused rings: 3 cyclohexane rings and 1 cyclopentane ring

b) 16 C atoms in four fused rings: 3 cyclohexane rings and one cyclopentane ring

c) 17 C atoms in four unfused rings: 3 cyclohexane rings and 1 cyclopentane ring

d) 17 C atoms in four fused rings: 1 cyclohexane rings and 3 cyclopentane ring


11. The polar head group of sphingomyelin is

a) phosphoserine

b) phosphocholine

c) phosphoethanolamine

d) phosphate


12. Glycolipids are

a) Sugar lipid complexes joined by glycosidic bond

b) protein lipid complexes joined by peptide bond

c) Sugar protein complexes joined by glycosidic bond

d) Sugar lipid complexes joined by ester bond 


13. Which of the following is an example of lipoproteins?

a) LDL

b) VLDL

c) Chylomicron

d) all of the above 

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 MCQ on Electron Transport Chain

Answers:

1. d) Waxes

2. a) double bonds are absent

3. b) cis-unsaturated fatty acid

4. c) both a and b

5. a) 3 fatty acids joined to 1 glycerol by ester linkage

6. c) polar phosphate containing hydrophilic head group and hydrophobic fatty acid tail

7. b) 2 Fatty acid+ 1 Glycerol + phosphate group + attached alcohol

8. d) all of the above

9. b) sphingosine

10. a) 17 C atoms in four fused rings: 3 cyclohexane rings and 1 cyclopentane ring

11. b) phosphocholine

12. a) Sugar lipid complexes joined by glycosidic bond

13. d) all of the above 

 

 

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Botany Multiple Choice Questions (Set 1)

1. Viral reverse transcriptase copies the viral RNA to DNA in cytoplasm and then the DNA moves into the nucleus. This process occurs in the case of

A) Poxviridae B) Rhabdoviridae  C) Retroviridae D) Reoviridae

2. Adaptive immunity response is acquired after infection. Find the correct sequence of adaptive immunity response

A) Pathogen enters→APC triggers B cells via T helper cell→Antibodies

B) Pathogen enters→macrophage and dentritic cells recognize the antigen → engulf, process and present→APC interact with lymphocytes→ activate lymphocytes→adaptive immune response

C) Pathogen enters→phagocytes became activated→trigger cytotoxic T cells→Nk cells kills infected cells

D) Pathogen enters→mast cell degranulation→inflamation→immunity

3. Macdonald Pfitzer’s law is related to the

A) Progressive decrease in the cell size in diatoms during cell division

B) Progressive increase in the cell size in diatoms during cell division

C) Progressive decrease in the cell size during auxospore formation in Centrales

D) Progressive decrease in the cell size during auxospore formation in Pennales

4. Many Rhodophyceae members can achieve high degree of thallus development. But some of them are unicellular. Identify a pair of unicellular red algae from the following.

A) Porphyridium and Chroothece

B) Goniotrichum and Asterocyctis

C) Porphyra and Chondrus

D) Gracilaria and Gelidium

Botany MCQ - PG Level Questions -SET Exam Questions and Answers (Set 1)

5. Myxomycetes, the fungus like organisms are characterized by

1. Wall less myxamoebae, swarm cells and plasmodium

2. Spores with chitinous cell wall

3. Spores with cellulose cell wall

4. Fructifications with a thin wall called peridium which is often calcified and may contain cellulose

A) 1, 2 & 4 B) 1, 3 & 4 C) 1 & 2 D) 1 & 4

6. Match the following

List I                                List II

a. Agaricus bisporous      1. Puff ball

b. Amanita phalloides      2. Death cap

c. Lycoperdon sps.          3. Oyster mushroom

d. Pleurotus sajor-caju     4. Button mushroom

A) a- 1 b-2 c-3 d-4

B) a- 4 b-2 c-3 d-1

C) a-4 b-2 c-1 d-3 

D) a -3 b-4 c-2 d-1

7. Cyphellae, Cephalodia, Isidia and Soredia are certain specialized structures associated with thalli of:

A) Certain Algae  B) Some Fungi C) Lichens  D) Certain Bryophytes

8. The spore dispersal mechanism of Funaria?

A) Pseudo elaters 

B) elaters

C) Peristomial teeth 

D) No special mechanism

9. Which among the following is a pteridophyte without the differentiation into true

leaves and roots?

A) Azolla B) Marselia C) Lepidodendron D) Rhynia

10. Which of the following stelar types in Pteridophytes has leaf traces?

A) Protostele B) Siphonostele C) Dictyostele D) Both B and C

11. Which one of the following Gymnosperms is a profusely branching shrub?

A) Ginkgo biloba B) Ephedra distachya C) Gnetum gnemon D) Welwitschia mirabilis

12. The general pollination mechanism in gymnosperms is:

A) Entomophily B) Anemophily C) Malacophily D) Chiropteriphily

13. The plant genus of Samara fruit type is:

A) Acacia B) Capsella C) Dioscorea D) Calotropis

14. Rule of priority of ICBN states that

A) The earliest applicable, properly published name is the correct one

B) Botanical nomenclature is independent of zoological nomenclature

C) Scientific names of taxonomic groups are treated as Latin regardless of their derivation

D) The application of names of taxonomic groups is determined by means of nomenclatural types

15. Hypanthodium is a special type of inflorescence seen in:

A) Dianthus B) Dorstenia C) Poinsettia D) Ficus

16. Match the following:

 List I                                List II

a. Nymphaeaceae        1. pollinia

b. Brassicaceae            2. trifid style

c Dipterocarpaceae      3. laminar stamen

d. Asclepiadaceae        4. siliqua

A) a- 3 b-1 c-4 d-2 B) a- 4 b-2 c-3 d-1  C) a-4 b-2 c-1 d-3 D) a-3 b-4 c-2 d-1

17. Head office of NBPGR is at:

A) New Delhi B) Mumbai C) Kolkata D) Chennai

18. Indigo is obtained from several species of Indigofera. In the plant the dye occurs as a colourless glycoside in the

A) seeds B) fruit C) leaves D) bark

19. Investigating plants used by societies in various parts of the world is known as

Ethnobotany. The father of ethnobotany is

A) Richard Evans Schultes  

B) Jacques Cartier 

C) Frank Cushing  

D) John William Harshberger

20. Match the following

 List I                                            List II

a. Heart wood                       1. Gymnosperms

b. Hard wood                         2. Recently formed wood

c Sapwood                            3. Angiosperms

d. Soft wood                          4. Tyloses

A) a-3 b-1 c-4 d-2 

B) a- 4 b-2 c-3 d-1

C) a-4 b-2 c-1 d-3

D) a-4 b-3 c-2 d-1

Answers

1. C) Retroviridae
2. B) Pathogen enters→macrophage and dentritic cells recognize the antigen → engulf, process and present→APC interact with lymphocytes→ activate lymphocytes→adaptive immune response
3. A) Progressive decrease in the cell size in diatoms during cell division
4. A) Porphyridium and Chroothece
5. B) 1, 3 & 4
6. C) a-4 b-2 c-1 d-3 
7. Lichens 
8. C) Peristomial teeth 
9. D) Rhynia
10. C) Dictyostele 
11. B) Ephedra distachya
12. B) Anemophily
13. C) Dioscorea 
14. A) The earliest applicable, properly published name is the correct one
15. D) Ficus
16. D) a-3 b-4 c-2 d-1
17. A) New Delhi 
18. C) leaves
19. A) Richard Evans Schultes 
20. D) a-4 b-3 c-2 d-1

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MCQ on Plant Taxonomy - Family

1. Monothecous anther is a characteristic feature of the family?

a) Apocynaceae

b) Poaceae

c) Compositae

d) Malvaceae 

2. In some plants the mechanism of seed dispersal is by censor mechanism, the plant belongs to the family 

a)Malvaceae

b) Papilioniaceae

c) Papaveraceae

d) Boraginaceae

3. Tetradynamous stamen can be seen in 

a) Scoparia

b) Torrenia

c) Brassica

d) Tridax

4. Cremocarp fruit is characteristic to

a) Rubiaceae

b) Aizoaceae

c) Capparidaceae

d) Apiaceae

5. Cyathium inflorescence is seen in 

a) Euphorbia

b) Cythula

c) Hevea

d) Tridax

6. The Lamiaceae family is characterized by the inflorescence

a) Scorpiod cyme

b) Helicoid cyme

c) Verticellaster

d) Cyathium

7. In Smilax tendrils are 

a) Modified stipules

b) Modified leaf

c) Modified petiole

d) Modified leaflet 

8.Marginal placentation and monocarpellary pistil are found in 

a)Poacae

b) Asteraceae

c) Fabaceae

d) Liliaceae

MCQ on Plant Taxonomy - Family

9. Labellum in Orchidaceae comes to anterior side by the twisting of the ovary through 180 degree . The process is called 

a) Adnation

b) Articulation

c)Resupination 

d) Attenuation

10.The Comelinaceae family is commonly known as the 

a) Grass family

b) Aster family

c) Spiderwort family

d) Lilli family 

 Learn more:  Plant Systematics 

Answers

1.  d) Malvaceae

2. c) Papaveraceae

3. c) Brassica

4. c) Verticellaster

5. a) Euphorbia

6. c) Verticellaster

7. a) Modified stipules

8. c) Fabaceae

9. c) Resupination 

10. c) Spiderwort family

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Multiple Choice Questions on Electron Transport Chain

MCQ on Electron transport Chain

1. Which is the site of Electron Transport Chain?

a) Mitochondrion

b) Outer Mitochondrial membrane

c) Inner Mitochondrial membrane

d) Mitochondrial matrix

Multiple Choice Questions on Electron transport Chain

2. Which of the following are electron donors during ETC?

a) NADH and FADH2

b) NADPH and FADH2

c) ATP, NADH and FADH2

d) NADH and FMN

This video will help you to refresh Electron Transport Chain in 10 minutes

3. The movement of electrons from NADH occurs via complex

Complex I: NADH dehydrogenase

Complex II: Succinate dehydrogenase

Complex III: Cytochrome bc1 

Complex IV: Cytochrome c oxidase

a) 1-2-3-4

b) 1-3-4

c) 2-3-4

d) 1-4

4. Which is the terminal electron acceptor in ETC?

a) UQ

b) FAD

c) UQH2

d) O2

5. Which of the following is a membrane bound enzyme of Krebs cycle that forms an enzyme complex in ETC?

a) NADH dehydrogenase

b) Succinate dehydrogenase

c) Cytochrome oxidase

d) Cytochrome reductase

6. The movement of electrons from FADH2 occurs via complex

a) 1-2-3-4

b) 1-3-4

c) 2-3-4

d) 1-4

7. The terminal electron acceptor O2 receives electrons from

a) Cyt c

b) Cyt c1

c) Cyt b

d) Cyt a

8. Which of the following statement is true regarding ATP synthase

a) Located in outer mitochondrial membrane; F1 unit made up of ϒ3β3αδὲ

b) Located in inner mitochondrial membrane; F1 unit made up of ϒ3β3αδὲ

c) Located in mitochondrial matrix; F1 unit made up of ϒ3β3αδὲ

d) Located in inner mitochondrial membrane; F1 unit made up of ϒ3β3α3δὲ

9. Which of the following are the major events in ETC?

a) electron flow and release of energy

b) proton gradient formation

c) PMF driven ATP synthesis

d) all of these

10. NADH binding site of the enzyme NADH dehydrogenase orient towards

a) Mitochondrial Intermembrane space

b) Outer Mitochondrial membrane

c) Inner Mitochondrial membrane

d) Mitochondrial matrix

11. Which of the following protein complexes (Complex 1-4) acts as proton pump?

Complex I: NADH dehydrogenase

Complex II: Succinate dehydrogenase

Complex III: Cytochrome bc1 

Complex IV: Cytochrome c oxidase

a) 1 & 2

b) 1,3 & 4

c) 3 & 4

d) 2 & 4

12. Which of the following ions are vital in transferring electrons to O2?

a) Ca

b) Fe

c) Mn

d) Cu 

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MCQ on Chemiosmosis and ATP Synthesis

Diagram Quiz on Chemiosmosis and ATP synthesis

Notes on  Chemiosmosis and ATP synthesis Step wise Explanation

Answers:

1. c) Inner Mitochondrial membrane

2. a) NADH and FADH2

3. b) 1-3-4

4. d) O2

5. b) Succinate dehydrogenase

6. c) 2-3-4

7. d) Cyt a (exactly Cyt a3)

8. b) Located in inner mitochondrial membrane; F1 unit made up of ϒ3β3αδὲ

9. d) all of these

10. d) Mitochondrial matrix

11. c) 3 & 4 (cytochromes are proton channels)

12. Cu

 

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Practice Test on Living World -Biological Classification

Biological ClassificationPractice Test on Living World -Biological Classification
Quiz Application

you'll have 15 second to answer each question.

Time's Up
score:

Quiz Result

Total Questions:

Attempt:

Correct:

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Percentage:

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NEET MCQ on Environmental Issues | Ecology MCQ

1. Which of the following statements is not valid for aerosols?

A) They alter rainfall and monsoon patterns

B)They cause increased agricultural productivity

C)They have negative impact on agricultural land

D)They are harmful to human health

2. A lake which is rich in inorganic waste may result in

A) increased population of aquatic organisms due to minerals

B)drying of the lake due to algal bloom

C)increased population of fish due to lots of nutrients

D)morality of fish due to lack of oxygen

3. Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from

A) domestic sewage

B) dairy industry

C)petroleum industry

D)sugar industry 

4. The high DDT concentration in aquatic food chain shall occur in

A) phytoplankton

B)seagull

C) crab

D)eel

5. Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers

A) Ammonia

B) Methane

C)Nitrous oxide

D)Ozone

6. Joint Forest Management concept was introduced in India during

A) 1980s

B)1990s

C)1960s

D)1970s

7. A river with an inflow of domestic sewage rich in organic waste may result in

A)an increased production of fish due to biodegradable nutrients

B)death of fish due to lack of oxygen

C)drying of the river very soon due to algal bloom

D)increased population of aquatic food web organisms

8. Acid rain is caused by increase in the atmospheric concentration of

A)CO2 and CO

B)O3  and dust

C)SO3 and NO2

D)SO3  and CO

9. Eutrophication  of water bodies leading to killing of fishes is mainly due to non availability of

A)essential minerals

B)oxygen

C)food

D)light

10. The UN Conference of Parties on climate change in the year 2012 was held at

A) Lima

B) Warsaw

C) Durban

D) Doha

NEET MCQ on Environmental Issues   | Ecology MCQ
Learn more:  

Answers

1. B)They cause increased agricultural productivity

2. D)morality of fish due to lack of oxygen

3. C)petroleum industry

4. B)seagull

5. D)Ozone

6. A) 1980s

7. B)death of fish due to lack of oxygen

8. C)SO3 and NO2

9. B)oxygen

10. D) Doha

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