Molecular Biology Questions And Answers

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Objective Type Biology MCQs For MCAT Exams Test

Q.1: The food of hydra consists of-------- ?

1. Humus
2. Detritus
3. Dead microscopic animals
4. Small crustaceans

D

Q.2: Sebum produced from sebaceous glands in a mammal helps in------ ?

1. Protection against micro organisms
2. Temperature regulation
3. Excretion
4. All of these

A

Q.3: Keto group is represented as------ ?

1. CO
2. C-COO-C
3. HCOH
4. HOH

A

Q.4: The trioses which are intermediate in respiration and photosynthesis are-------- ?

1. Glyceraldehydes
2. Dihydroxy acetone
3. Both of these
4. None of these

C

Q.5: In humans the number of tetrads formed during mitosis is-------- ?

1. 23
2. 46
3. 0
4. 4

C

Q.6: The red green color 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

A

Q.7: The one which is a weed killer is--------- ?

1. IAA
2. NAA
3. 2 4-D
4. GA

C

Q.8: Which of the following category is most general with its members lest resembling with each other than the other categries-------- ?

1. Species
2. Genus
3. Family
4. Order

D

Q.9: What is the characteristic feature of consumers ?

1. Autotroph
2. Heterotroph
3. Parasite
4. Saprophyte

B

Q.10: DNA or RNA of viruses is enclosed in --------- coat ?

1. Protein
2. Carbohydrate
3. Lipid
4. DNA

A

Q.11: Viruses are ---------- smaller than bacteria ?

1. 10 – 100 times
2. 10 – 1000 times
3. 100 – 1000 times
4. 1000 – 10000 times

B

Q.12: Bacteriopahage that infect E. coli are called-------- ?

1. M type
2. N type
3. T type
4. S type

C

Q.13: Which of the following disease results in Paralysis due to viral attack on C.N.S ?

1. Measles
2. Herpes simplex
3. Hepatitis
4. Polio

D

Q.14: Mastication is carried out by------- ?

1. Teeth
2. Tongue
3. Smooth muscles
4. All of these

A

Q.15: Puccinia commonly destroys-------- ?

1. Corn
2. Tomato
3. Dodder
4. Wheat

D

Q.16: Of the following, which one is missing in herbivores------- ?

1. Premolars
2. Canines
3. Incisors
4. Molars.

B

Q.17: Hunger contractions are ----- contractions ?

1. Antiperistalsis
2. Peristalsis
3. Voluntary
4. None of these

B

Q.18: Root like structure in saprotrophic fungi are called------ ?

1. Rhizodis
2. Haustoria
3. Hyphae
4. Constricting rings

A

Q.19: How many species of ascomycota occur in lichen symbiotic association ?

1. 30%
2. 40%
3. 50%
4. 60%

C

Q.20: Which of the following is called black bread mold ?

1. Pilobolus
2. Penicillium
3. Neurospora
4. Rhizopus

D