Biology 501-550 MCQs

Biology

501. Puccinia is a parasitic ________ ?

a. Plant

b. Fungus

c. Animal

d. Algae

502. An illness which largely affects girls usually just after the onset of puberty.

a. Bulimia nervosa

b. Obesity

c. Anorexia nervosa

d. None of these

503. Autotrophic organisms can exist in an exclusively ________ environment?

a. Organic

b. Inorganic

c. Wet

d. Terrestrial

504. Loss of appetite due to the fear of becoming obese is ________ ?

a. Anorexia nervosa

b. Bulimia nervosa

c. Piles

d. Dyspepsia

505. Strong chlorosis is due to the deficiency of _________ in plants?

a. Magnesium

b. Nitrogen

c. Potassium

d. Phosphorus

506. Stunted growth of roots is due to the deficiency of ________ in plants?

a. Potassium

b. Magnesium

c. Phosphorus

d. Iron

507. The liquid that escapes during defrosting frozen meat contains ________ bacteria?

a. Campylobacter

b. Nitrobacter

c. Azobacter

d. Salmonella

508. One of the commonest cause of food poisoning are the toxins produced by ________ ?

a. Azobacter

b. Nitrosomonas

c. Campylobacter

d. Nitrobacter

509. Puccinia commonly destroys _______ ?

a. Corn

b. Tomato

c. Dodder

d. Wheat

510. Nodules on roots of leguminous plants have _________ bacteria?

a. Anaerobic

b. Nitrogen fixing

c. Nitrifying

d. Ammonifying

511. Earthworm is an example of ________ feeder?

a. Detritus

b. Fluid

c. Microphagous

d. Filter

512. All of the insectivorous plants are true ________ ?

a. Heterotrophs

b. Autotrophs

c. Carnivores

d. Saprotrophs

513. Of the following, which one has more variety of nutrition ________ ?

a. Animals

b. Bacteria

c. Plants

d. Fungi

514. Incomplete or imperfect digestion is known as ________ ?

a. Obesity

b. Dyspepsia

c. Anorexia nervous

d. Bulimia nervosa

515. The leaf is bilobed with midrib between them. The plant is ________ ?

a. Saraccnia

b. Dionaea

c. Pitcher plant

d. None of these

516. Anus is surrounded by _______ types of muscles?

a. 2

b. 3

c. 1

d. 4

517. Of the following, which one is missing in herbivores ________ ?

a. Premolars

b. Canines

c. Incisors

d. Molars

518. Certain types of whales are also ________ feeder?

a. Fluid

b. Macrophagous

c. Filter

d. None of these

519. ________ is about 2.4 meter in length and compromising about two fifth of the small intestine?

a. Duodenum

b. Jejunum

c. Ileum

d. Caecum

520. Hydra is an example of _______ feeder?

a. Fluid

b. Macrophagous

c. Filter

d. All of these

521. Hepatic and Pancreatic secretions are also stimulated by a hormone produced by the intestinal mucosa. The hormone is ________ ?

a. Creatin

b. Gastrin

c. Secretin

d. Pepsin

522. Parasites capable of living independently of its host at times is called as _______ parasite?

a. Obligate

b. Strict

c. Facultative

d. Endoparasite

523. A painful burning sensation produced in the chest cavity usually associated with the back flush of acidic chyme into the esophagus is ________ ?

a. Pyrolysis

b. Pyrosis

c. Peristalsis

d. Dyspepsia

524. In planaria, numerous small branches which end blindly are called as _______ ?

a. Digestive tract

b. Intestinal caeca

c. Hepatic caeca

d. Both B & C

525. Midgut in cockroach is a short narrow tube called _______ ?

a. Hepatic caeca

b. Gizzard

c. Stomach

d. Rectum

526. Hunger contractions are ________ contractions?

a. Antiperistalsis

b. Peristalsis

c. Voluntary

d. None of these

527. The partly digested food is stored in ________ in cockroach?

a. Gizzard

b. Crop

c. Hepatic caeca

d. Rectum

528. How many species of fungi are known till now?

a. 10000

b. 100000

c. 10000000

d. 1000

529. Which of the following group represent pathological fungi ________ ?

a. Mushrooms morels and truffles

b. Rusts smuts and molds

c. Penicillium

d. All of these

530. Death cap/death angel (Amanita) and Jack O Lantern mushroom are examples of _______ ?

a. Edible mushrooms

b. Poisonous mushrooms

c. Both of these

d. None of these

531. Which one of the following is different from all the rest regarding the number of cells in its body ________ ?

a. Rusts

b. Mushrooms

c. Molds

d. Yeasts

532. Fungi which get their food directly from dead organic matter are called _______ ?

a. Parasitic fungi

b. Predators

c. Mutualists

d. Decomposers

533. How many species of mushrooms are edible?

a. 100

b. 200

c. 3000

d. 4000

534. Root like structure in saprotrophic fungi are called _______ ?

a. Rhizoids

b. Haustoria

c. Hyphae

d. Constricting rings

535. Penicillium reproduce via ________ ?

a. Spores

b. Conidia

c. Budding

d. Fragmentation

536. Those fungi which can grow only on their living host and cannot be grown on available defined growth culture medium e.g. various mildews and most rust species are called ________ ?

a. Parasitic fungi

b. Obligate parasitic fungi

c. Facultative parasitic fungi

d. All of these

537. Mode of nutrition in penicillium is ________ ?

a. Saprotrophs

b. Parasitic

c. Predators

d. Mutualistic

538. Oyster mushroom is an example of predator fungi which attack on ________ ?

a. Pin warms

b. Tape worms

c. Round worms

d. Platyhelminthes

539. Lichen is a symbiotic mutualistic association of fungi with ________ ?

a. Autotrophs

b. Roots of vascular plants

c. Green algae and cyanobacterium

d. Leguminous plants

540. Foliose lichen are ________ ?

a. Stem like

b. Branching

c. Leaf like

d. Crust like

541. How many species of Ascomycota occur in lichen symbiotic association?

a. 30%

b. 40%

c. 50%

d. 60%

542. An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swelling and minute branches and also extend out into surrounding soil is called ________ ?

a. Mycorrhizal association

b. Endomycorrhizae

c. Ectomycorrhizae

d. Lichen

543. Which one of the following is the largest group of fungi?

a. Zygomycota

b. Ascomycota

c. Basidiomycota

d. Deuteromycota

544. The Kingdom of recyclers is known as kingdom ________ ?

a. Algae

b. Bacteria

c. Fungi

d. Embryophyta

545. According to two kingdom classification fungi were placed in kingdom ________ ?

a. Plantae

b. Animalia

c. Protista

d. Fungi

546. At which stage in the life cycle of Rhizopus meiosis takes place?

a. Formation of sporangiophore via germination of zygospore

b. Formation of spores in sporangia

c. Fusion of two hyphae

d. Formation of Zygote by fusion of gametangia

547. Ecological role of fungi as decomposers is only paralleled by ________ ?

a. Cyanobacteria

b. Blue green algae

c. Bacteria

d. Virus

548. Which of the following is called black bread mold?

a. Pilobolus

b. Penicillium

c. Neurospora

d. Rhizopus

549. Coenocytic hyphae are also known as ________ ?

a. Septate

b. Perforated hyphae

c. Aseptate

d. Uninucleate hyphae

550. In which of the following example of fungi dikaryotic hyphae exist for long period?

a. Deuteromycota

b. Basidiomycota

c. Zygomycota

d. All of these

Biology 451-500 MCQs

Biology

451. Which of the following organisms have Chitin as a major structural component of their cell wall _______ ?

a. Prokaryotae

b. Protoctista

c. Plantae

d. Fungi

452. All of the following are involved in nitrification except?

a. Nitrobacter

b. Nitrosomonas

c. Rhizobium

d. All of these

453. DNA or RNA of viruses is enclosed in ________ coat?

a. Protein

b. Carbohydrate

c. Lipid

d. DNA

454. In most ecosystems the greatest amount of energy flows through the _______ ?

a. Secondary consumers

b. Herbivores

c. Carnivores

d. Decomposers

455. Which of the following relationship is NOT an example of symbiosis?

a. Rhizobium and leguminous plants

b. Marchantia sporophyte and gametophyte

c. Algae and fungi in a lichen

d. Mycorrhizal fungi and tree roots

456. Other name for Kingdom monera is ________ ?

a. Protoctista

b. Prokaryotae

c. Archaea

d. None of these

457. Animals with greatest number of similarities are grouped together in a/an ________ ?

a. Phylum

b. Family

c. Genus

d. Order

458. Amoeba belongs to which kingdom _______ ?

a. Prokaryotae

b. Plantae

c. Monera

d. Protista

459. Competition between species will be greatest if they attempt to occupy the same ________ ?

a. Ecosystem

b. Community

c. Habitat

d. Niche

460. The one which is present in all aerobic species is ________ ?

a. Cytochrome c

b. Cytochrome a

c. Cytochrome a3

d. Cytochrome b

461. The word virus is derived from Latin word venom meaning ________ ?

a. Sweet Fluid

b. Sore Fluid

c. Poisonous Fluid

d. Salty Fluid

462. The size of smallest virus is ________ ?

a. 10 nm

b. 20 nm

c. 30 nm

d. 40 nm

463. What percentage of light reaching the earth is used in photosynthesis?

a. 25%

b. 10%

c. 5%

d. 1%

464. Viruses are ________ smaller than bacteria?

a. 10 - 100 times

b. 10 - 1000 times

c. 100 - 1000 times

d. 1000 - 10000 times

465. Kangaroo rat most probably would be found in ________ ?

a. Tropical rain forest

b. Tundra

c. Grass land

d. Desert

466. Vaccine was discovered by ________ ?

a. Louis Pasteur

b. Edward Jenner

c. Ivanovski

d. Stanley

467. The name Bacteriophage was coined by ________ ?

a. Charles Chamberland

b. Ivanovski

c. Frederic Twort

d. D Herelle

468. Protein subunits of capsid is called the capsomeres is a characteristic of each virus. Their number in Herpes virus is _______ ?

a. 100

b. 152

c. 162

d. 172

469. Which of the statement about viruses is incorrect _________ ?

a. We can not grow them in laboratories on artificial medias

b. They are obligate intracellular parasite

c. They can synthesize their nucleic acid

d. They are resistant to most of antibiotic treatment

470. A virion is _______ ?

a. Virus

b. Viral protein

c. Viral lysozyme

d. Viral gene

471. For which of the following no preventive vaccine is available?

a. HAV

b. HBV

c. HCV

d. HEV

472. Which one of the following specially result in chronic liver disease leading to hepatic failure:

a. HAV

b. HBV

c. HCV

d. HEV

473. Protein coat the capsid of adenovirus is ________ ?

a. Surrounded by genome

b. Surrounding genome

c. Surrounding the envelop

d. Both B and C

474. Mode of transmission of hepatitis A is ________ ?

a. Serum

b. Faeco-oral

c. Sexual contact

d. All of these

475. Attachment of the bacteriophage with the receptor site on the bacterial cell wall involves _______ ?

a. Strong covalent bond between virion and the receptor site

b. Week chemical union between them

c. Both A and B depending upon the phage

d. None of these

476. Which of the following statement about AIDS is incorrect:

a. is a host specific disease

b. An infected mother cannot pass the virus to her baby

c. Results in enlargement of lymph nodes

d. Can be prevented

477. Bacteriophage that infect E.coli are called _______ ?

a. M type

b. N type

c. T type

d. S type

478. Complex symptoms like severe pneumonia vascular tumor sudden weight loss swollen lymph nodes and immune deficiency are features of:

a. Polio

b. Hepatitis

c. AIDS

d. HIV

479. An isolated virus is not considered living since it _______ ?

a. Separates in to two inner parts

b. Can not metabolize

c. Rapidly looses its Genome chemical inert

d. Is coated with an air tight shield

480. Which of the following is the smallest known virus:

a. Hepatitis virus

b. Retrovirus

c. Polio virus

d. Pox virus

481. The agent of controversial nature causing mad cow infection is _________ ?

a. Bacteria

b. Cowpox Virus

c. Adenovirus

d. Prion

482. Which of the following virus has special affiliations with the tumor production:

a. Hepatitis virus

b. Retrovirus

c. Polio virus

d. Pox virus

483. Which of the following is incorrect for the lysogenic cycle in life cycle of bacteriophage _________ ?

a. Phage when gets incorporated with the bacterial chromosome is called prophage

b. The bacterium continues to live and reproduce normally

c. Lysogenic bacteria may get infected by the related phage

d. The cycle may convert into lytic type resulting from environmental exposure

484. An enzyme which can convert single stranded RNA into double stranded viral DNA is called _________ ?

a. DNAase

b. RNAase

c. DNA polymerase

d. Reverse Transcriptase

485. In lysogenic cycle the process of separation of phage DNA from the hosts chromosome and initiation of lytic cycle is called ________ ?

a. Lysis

b. Lysogeny

c. Induction

d. Adsorption

486. Which of the following disease results in Paralysis due to viral attack on C.N.S:

a. Measles

b. Herpes simplex

c. Hepatitis

d. Polio

487. In life cycle of bacteriophage which step occur after attachment of prophage with the receptor site of the bacterial cell wall ________ ?

a. Absorption

b. Multiplication

c. Lysogeny

d. Penetration

488. Tobacco mosaic virus is ________ ?

a. Spherical

b. Rod Shaped

c. Tadpole like

d. Hexagonal

489. In the Lysogenic cycle the DNA of the bacteriophage _______ ?

a. Joins the bacterial chromosomes

b. Attaches to the inner surface of the host membrane

c. Is immediately degraded when enters the host

d. Goes directly to host ribosomes for translation

490. Which of the following is an RNA virus:

a. Influenza virus

b. Herpes virus

c. HBV

d. Pox virus

491. Temperate phage may exist as ________ ?

a. Prophage

b. Capsid

c. Viron

d. Retrovirus

492. In the lytic cycle of bacteriophage the host DNA is ________ ?

a. Replicated

b. Turn off by the protein coat

c. Digested into its nucleotides

d. Turned on by the removal of the protein coat

493. Pepsinogen is produced from ________ ?

a. Mucous cells

b. Parietal cells

c. Zymogen cells

d. All of these

494. Carbohydrates, fats & proteins are essential for ________ ?

a. Metabolic processes of an organism

b. Providing energy

c. Formation of structures

d. All of these

495. Dipeptides into amino acids are converted through _______ ?

a. Amino peptidase

b. Erypsin

c. Pepsin

d. Trypsin

496. Magnesium is present in which of the following ________ ?

a. Cytochromes

b. ATP

c. Chlorophyll

d. Haemoglobin

497. Deficiency of which of the following causes chlorosis _________ ?

a. Nitrogen

b. Magnesium

c. Iron

d. Both A and B

498. Mastication is carried out by ________ ?

a. Teeth

b. Tongue

c. Smooth muscles

d. All of these

499. Deficiency of K+ causes ________ ?

a. Stunted growth & strong chlorosis

b. No electron transport chains

c. Premature death of leaves

d. Stunted growth of roots

500. Masses of dilated tortuous veins in the anorectal mucosa are known as _______ ?

a. Bulimia

b. Ulcer

c. Adipose tissue

d. Hemorrhoids

Biology 401-450 MCQs

Biology

401. In esterification OH comes from ________ ?

a. Organic acid

b. Alcohol

c. Water

d. Sugar

402. How many carbon atoms are required to form a furan ring (ribofuranose) _______ ?

a. 3

b. 4

c. 5

d. 2

403. Sleep movements are a type of ________ ?

a. Turgor movements

b. Growth movements

c. Tactic movements

d. Paratonic movements

404. Keto group is represented as _______ ?

a. CO

b. C-COO-C

c. HCOH

d. HOH

405. The type of learning in which there is loss or decrease in response to repeated stimuli?

a. Imprinting

b. Habituation

c. Latent learning

d. Insight learning

406. Glycolipids and glycoproteins have structural role in the _______ matrix of animal and bacterial cell?

a. Extracellular

b. Intracellular

c. Both of these

d. Glucose

407. The cells present in testes and secrete testosterone are ________ ?

a. Sertoli cells

b. Germinal cell

c. Interstitial cells

d. Spermatocyte

408. In Cx(H2O)y x ranges from _________ ?

a. 1 to 3 thousand

b. 3 to many thousand

c. 3 to 5 thousand

d. 5 to 9 thousand

409. Exposure to low temperature stimulates plants to flower. This is called ________ ?

a. Photoperiodism

b. Thermotropism

c. Vernalisation

d. Thermoregulation

410. The basic structural unit of a chromosome is ________ ?

a. The centromere

b. Nucleosome

c. Telomere

d. Histone

411. In living organisms the lubricant which provides protection against damage resulting from friction is _______ ?

a. Carbohydrates

b. Fatty acid

c. Water

d. Protein

412. The first stage of development in which a cavity appears is the _______ ?

a. Neurula

b. Morula

c. Gastrula

d. Blastula

413. The trioses which are intermediate in respiration and photosynthesis are ________ ?

a. Glyceraldehydes

b. Dihydroxy acetone

c. Both of these

d. None of these

414. The monosaccharide found in some bacteria and occurring rarely are ________ ?

a. Trioses

b. Hexoses

c. Tetroses

d. Pentoses

415. The one which causes contraction of wall of the uterus during and after birth?

a. ADH

b. MSH

c. Oxytocin

d. Progesterone

416. Which statement correctly describes the transcription of DNA?

a. It produces another DNA molecule

b. It produces mRNA

c. It is a semi conservation process

d. It occurs at surface of ribosomes

417. Triglyceride is also known as _______ ?

a. Natural lipid

b. Neutral lipid

c. Neutral wax

d. All of these

418. Carbon commonly combines with ______ ?

a. H

b. N & O

c. P & S

d. All of these

419. The sequence of 3 bases on tRNA which is complementary to codon of mRNA is called _______ ?

a. Gene

b. Anticodon

c. Code

d. Codon

420. The survival of an animal depends upon its ability to take some from its environment _______ ?

a. Chemicals

b. Hydrocarbons

c. Organic molecules

d. Inorganic molecules

421. In humans the number of tetrads formed during mitosis is _______ ?

a. 23

b. 46

c. 0

d. 4

422. Non polar organic molecules are ________ in water?

a. Soluble

b. Insoluble

c. Partially soluble

d. Depends upon condition

423. Interconversion of carbohydrates proteins and lipids in living cells are an example of _______ ?

a. Coordinated catabolic activities

b. Coordinated anabolic activities

c. Both A and B

d. Any one

424. Which one of the following is correct sequence of stages of prophase 1 of meiosis.

a. Diakinesis diplotene pachytene leptotene zygotene

b. Zygotene leptotene pachytene diplotene diakinesis

c. Leptotene zygotene pachytene diplotene diakinesis

d. Pachytene leptotene diplotene zygotene diakinesis

425. Which one of the following syndrome is the result of meiotic non dysjunction?

a. Klinefelter's syndrome

b. Turners syndrome

c. Downs syndrome

d. All of these

426. Which one of the following stage precedes mitosis during cycle?

a. G1 phase

b. S phase

c. G2 phase

d. M phase

427. Most of the cellular secretions are _______ in nature?

a. Glycolipids

b. Glycoproteins

c. Nucleohistones

d. Proteins

428. Genes will not be found in gene pairs in the _______ ?

a. Muscle cell of worm

b. Uterine cells of dog

c. Sperm cells of frog

d. Guard cells of leaf

429. rRNA constitutes _______ % of the total cellular RNA?

a. 3-4 %

b. 10-20 %

c. 80 %

d. 90 %

430. A genome is _______ ?

a. Appearance of an individual

b. Genetic basis of few characters

c. Full set of genes of an individual

d. All of these

431. Which conjugated molecules play important role in gene expression _______ ?

a. Glycolipids

b. Glycoproteins

c. Nucleohistones

d. None of these

432. There are mainly ________ types of tRNA?

a. 170

b. 20

c. 25

d. 15

433. The disease in which transmembrane carrier for the chloride ion is not produced is ________ ?

a. Hyper chloesterolemia

b. Cystic fibrosis

c. Severe combined immunodeficiency syndrome

d. AIDS

434. The one which is a weed killer is _______ ?

a. IAA

b. NAA

c. 2 4-D

d. GA

435. Five kingdom classification was proposed by _______ ?

a. Carolus Linnaeus

b. E-Chatton

c. Robert Whittaker

d. Lynn Margulis and Karlene Schwartz

436. Organisms of which of the following kingdom have absorptive mode of nutrition _______ ?

a. Prokaryotae

b. Protoctista

c. Animalia

d. Fungi

437. Which of the Euglenas (a Protoctista) character resembles that of animals _______ ?

a. They can move

b. They lack cell wall

c. They do not have chlorophyll

d. Both a and b

438. The one which can break open a plasmid ring is ________ ?

a. Ligase enzyme

b. Primase enzyme

c. Restriction endonuclease

d. ATP-ase enzyme

439. Allium cepa is the scientific name of ______ ?

a. Onion

b. Amaltas

c. Potato

d. Tomato

440. According to Lamarck evolution occurred as the result of ________ ?

a. Natural selection

b. The theory of recapitulation

c. Inheritance of acquired characters

d. Over production

441. Which of the following category is most general with its members lest resembling with each other than the other categories ________ ?

a. Species

b. Genus

c. Family

d. Order

442. The first eukaryotes appeared about ________ years ago?

a. 1.5 billion

b. 2.5 billion

c. 3.5 billion

d. 4.5 billion

443. Those organisms which can prepare their own food from simple inorganic material and can store energy are called ________ ?

a. Autotrophs

b. Heterotrophs

c. Procariotique

d. Eu-cariotique

444. Solanum tuberosum is a scientific name of ________ ?

a. Onion

b. Amaltas

c. Potato

d. Tomato

445. The structure which has been formed or modified from gill pouches in humans is ________ ?

a. Gills

b. Eustachian tube

c. Middle ear

d. Lungs

446. Scurvy and beriberi and caused by the deficiency of ________ ?

a. Vitamin B and C

b. Vitamin B and D

c. Vitamin C and B

d. Vitamin A and B

447. The word which E-Chatton suggested for bacteria and blue green algae was _______ ?

a. Autotrophs

b. Heterotrophs

c. Pro-cariotique

d. Eu-cariotique

448. The greatest diversity of animals in the lake is found in which one of the following zones?

a. Limnetic zone

b. Littoral zone

c. Profundal zone

d. None of these

449. So far over ________ number of species of animals are known?

a. 3 million

b. 1 million

c. 1

d. 2 million

450. What is the characteristic feature of consumers?

a. Autotroph

b. Heterotroph

c. Parasite

d. Saprophyte

Exercises on Use of Correct Form of Verb (Ex. No. 7)

Exercise No. 7

i. What (you) _______ at four?

a. does you do

b. do you do

c. have done

d. will you be doing

ii. They _______ all night.

a. will travel

b. travel

c. travels

d. travelling

iii. I ________ for you at the usual time.

a. shall wait

b. wait

c. had waited

d. waits

iv. She ________ her lesson in French in the morning.

a. will be doing

b. has done

c. do

d. does

v. She _______ her work before the guests arrive.

a. will have done

b. did

c. does

d. can do

vi. They _______ their exercise by the time the teacher arrives.

a. will write

b. write

c. will have written

d. writes

vii. She _______ from tour of Europe by the middle of December next.

a. returns

b. returned

c. will have returned

d. may return

viii. The farmers ________ the harvest before it rains.

a. reap

b. reaped

c. will have reaped

d. reaps

ix. These mangoes _______ the market by April.

a. will have reached

b. will reach

c. reach

d. reached

x. I _______ all the novels of Golding by the end of summer vacation.

a. may read

b. reads

c. shall have read

d. read

xi. The meeting _______ by the time we gather.

a. will have ended

b. ended

c. ends

d. end

xii. I hope it ______ raining by the evening.

a. stopped

b. stop

c. will have stopped

d. stops

xiii. She _______ her examination by the next fall.

a. will have taken

b. took

c. takes

d. take

xiv. They _______ their work by tomorrow.

a. completed

b. will complete

c. will have completed

d. complete

Biology 351-400 MCQs

Biology

351. Pic the odd one out

a. Psilophyton

b. Rhynia

c. Cooksonia

d. Psilotum

352. Which of the following statement is incorrect for fats containing unsaturated fatty acid _______ ?

a. They contain double bond

b. They are usually solid at room temperature

c. They are lighter than water

d. Their specific gravity is less than 1

353. Which one of the following fatty acid is more soluble in an organic solvent and has higher melting point _______ ?

a. Acetic acid

b. Butyric acid

c. Palmitic acid

d. All have same

354. Peptide bond is _______ ?

a. C-N link

b. C-O link

c. N-H link

d. C-H link

355. Animals obtain carbohydrates mainly from ________ ?

a. Glucose

b. Starch

c. Sucrose

d. Glycogen

356. The one which is incorrect pair?

a. Sori - Indusium

b. Arthrophytes - Jointed

c. Dichotomous - Vernation

d. Lycopods - Ground pries

357. Double fertilization occurs in ________ ?

a. All plants

b. All seed plants

c. Gymnosperms

d. Angiosperms

358. Proteins comprise of ________ % of the total dry weight of a cell?

a. 40%

b. 50%

c. 60%

d. 70%

359. Adult birds normally possess only one functional _______ ?

a. Ureter

b. Ovary

c. Lungs

d. Testis

360. Chemically component/s less in eukaryotic cell as compared to prokaryotic cell is / are (i) lipids (ii) carbohydrates (iii) proteins (iv) DNA _________ ?

a. i & ii

b. iii & iv

c. i ii iii & iv

d. iv only

361. Following possess bilateral symmetry as larva and radial symmetry as adult:

a. Chordata

b. Hydra

c. Echinodermata

d. Hemichordata

362. Proteins are polymers of ________ ?

a. Fatty acids

b. Isoprenoid units

c. Amino acids

d. Nucleotides

363. Which of the following is the empirical formula of chlorophyll b?

a. C55H70O5N4Mg

b. C55H72O6N4Mg

c. C55H70O6N4Mg

d. C55H72O5N4Mg

364. In Glycin an amino acid R group is replaced by _______ ?

a. H

b. CH3

c. COOH

d. C = O

365. How many moles of carbon dioxide are produced by complete oxidation of one mole of pyruvic acid?

a. 1

b. 2

c. 3

d. 6

366. The element in basic structure of proteins which differentiate them from carbohydrates _______ ?

a. C

b. S

c. H

d. N

367. Hunger pangs usually begin _______ after the previous meal.

a. 2-4 hours

b. 6-8 hours

c. 10-12 hours

d. 12-24 hours

368. Total number of amino acids discovered so far in cells and tissues are ________ ?

a. 20

b. 25

c. 150

d. 170

369. The major constituent of blood plasma is _______ ?

a. Protein

b. NaCl

c. Water

d. Cholesterol

370. An insulin molecule consists of ________ polypeptide chains?

a. 1

b. 2

c. 3

d. 4

371. The windpipe or trachea lies?

a. Dorsal to oesophagus

b. Ventral to oesophagus

c. Lateral to oesophagus

d. None of these

372. A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called _______ ?

a. Phosphodiester linkage

b. Glycosidic bond

c. Peptide bond

d. Hydrogen bond

373. Total number of amino acids in a hemoglobin molecule are ________ ?

a. 554

b. 564

c. 574

d. 584

374. Which structure of protein gives information about number and sequence of amino acids in it ________ ?

a. Primary structure

b. Secondary structure

c. Tertiary structure

d. Quaternary structure

375. Locomotory structures are not found in which of the following group?

a. Amoebas

b. Zooflagellates

c. Ciliates

d. Apicomplexans

376. Hemoglobin molecule exhibits which structural organization of proteins ________ ?

a. Primary structure

b. Secondary structure

c. Tertiary structure

d. Quaternary structure

377. In an aqueous environment the most stable tertiary conformation is that in which _______ amino acids are buried inside the conformation?

a. Hydrophobic

b. Hydrophilic

c. Basic

d. None of these

378. Which of the following statement is incorrect about RNA ________ ?

a. The pentose sugar in it is Ribose

b. It contains Adenine Guanine Thymine and Cytosine

c. It is present in the nucleoli

d. It may be folded back on itself to give double helical characteristics

379. Protein coats of viruses are synthesized in ________ ?

a. Lytic cycle

b. Lysogenic cycle

c. Both a & b

d. All of these

380. Each turn of DNA contain _______ nitrogenous base pairs?

a. 5

b. 10

c. 20

d. 25

381. Membranes of the grane are sites where?

a. Oxygen is stored

b. Food is stored

c. Sunlight is trapped

d. CO2 is stored

382. Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong ________ ?

a. Globular proteins

b. Fibrous proteins

c. Both a and b

d. None of these

383. The simplest of oxygen producing photosynthetic organisms are ________ ?

a. Algae

b. Bacteria

c. Cyanobacteria

d. Chlamydomonas

384. Amphioxus is a ________ ?

a. Chordate

b. Protochordate

c. Lower chordate

d. All of these

385. Which structural organization is most common in globular proteins _______ ?

a. Primary

b. Secondary

c. Tertiary

d. Quaternary

386. Which of the following does not show quaternary structure ________ ?

a. Haemoglobin

b. Pepsin

c. Fibrin

d. Insulin

387. Which of the following occurs in anaerobic respiration but not in aerobic respiration?

a. Release of CO2

b. Reduction of NAD

c. Formation of ATP

d. Production of ethanol from acetaldehyde

388. Helical structure is kept by the formation of ________ bonds among amino acids molecules?

a. H bonds

b. Disulfide bond

c. Ionic bond

d. Hydrophobic bonds

389. Which of the following are triploblastic and acoelomate?

a. Sponges

b. Annelida

c. Platyhelminthes

d. Aves

390. The food of hydra consists of ________ ?

a. Humus

b. Detritus

c. Dead microscopic animals

d. Small crustaceans

391. Actin and myosin are the basic proteins involved in contractile machinery of our body to which type of proteins do they belong ________ ?

a. Globular proteins

b. Fibrous proteins

c. Both a and b

d. None of these

392. If a plasmolysed plant cell is placed in water the cell will _______ ?

a. Burst

b. Be killed

c. Be deplasmolysed

d. Show no change in it

393. ATP is an important molecule for its major function _______ ?

a. As an energy currency of the cell

b. As a coenzyme

c. Both a and b

d. None of these

394. The first organism of whose genome was completely discovered was ________ ?

a. Human beings

b. Influenza Virus

c. Haemophilus Influenzae

d. None of these

395. All of the following veins carry deoxygenated blood except ?

a. Superior vena cava

b. Inferior vena cava

c. Hepatic vein

d. Pulmonary vein

396. Animals fats are _________ at room temperature?

a. Liquids

b. Gases

c. Solids

d. None of these

397. Sebum produced from sebaceous glands in a mammal helps in ________ ?

a. Protection against micro organisms

b. Temperature regulation

c. Excretion

d. All of these

398. Which one is not found in fatty acids in acylglycerols _______ ?

a. C-6

b. C-25

c. C-26

d. C-30

399. The one that stores calcium is _______ ?

a. Sarcolemma

b. Sarcoplasm

c. Sarcoplasmic reticulum

d. Cytosol

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

a. Activation of sweat glands

b. Dilation of skin blood vessels

c. Panting

d. Thermogenesis