300+ REAL TIME NEET Biology Objective Questions & Answers 2023

300+ TOP MCQs on Diseases Caused by Viruses and Answers

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Diseases Caused by Viruses Multiple Choice Questions

MCQs on Diseases Caused by Viruses :

1. The non-living characteristic of viruses is
(a) ability to multiply only inside the host
(b) ability to undergo mutation
(c) ability to be crystallized
(d) ability to cause diseases in the host

Answer

Answer: (c)

2. This virus contains both DNA and RNA
(a) Polio virus
(b) Herpes virus
(c) Cyanophage
(d) Leuko virus

Answer

Answer: (d)

3. Region in the body where polio virus multiplies is
(a) Muscle cells
(b) Nerve cells
(c) Intestinal cells
(d) None of the above

Answer

Answer: (c)

4. Interferons curb infection of
(a) Fungi
(b) Bacteria
(c) Cancer
(d) None of these

Answer

Answer: (d)

5. This virus, for the first time, was synthesized in the form of non-living crystals
(a) Pox virus
(b) Flu virus
(c) Tobacco mosaic virus
(d) Bacteriophage

Answer

Answer: (c)

6. Causative of Chickenpox is
(a) Bacteriophage T-2
(b) Varicella virus
(c) SV-40 virus
(d) Adenovirus

Answer

Answer: (b)

7. Tetanus germs produce a toxin. It affects
(a) jaw bones
(b) involuntary muscles
(c) voluntary muscles
(d) both voluntary and involuntary muscles

Answer

Answer: (c)

8. This is a viral disease
(a) Rickets
(b) Measles
(c) Beri-beri
(d) Syphilis

Answer

Answer: (b)

9. This is a communicable disease
(a) Rabies
(b) Cancer
(c) Alkaptonuria
(d) Phenylketonuria

Answer

Answer: (a)

10. Hydrophobia or rabies is a disease caused by
(a) Protozoan
(b) Nematode
(c) Virus
(d) Helminth

Answer

Answer: (c)

300+ TOP MCQs on Skeletal Tissue and Answers

MCQs on Skeletal Tissue :

1. Tendons and ligaments are
(a) muscular tissue
(b) connective tissue
(c) skeletal tissue
(d) fibrous connective tissue

Answer

Answer: (d)

2. Skeletal muscle bundles are held together by a common connective tissue layer known as
(a) Fascia
(b) Perimysium
(c) Aponeurosis
(d) endomysium

Answer

Answer: (a)

3. Composition of bone marrow is
(a) adipose and areolar tissue
(b) adipose, areolar tissue and blood
(c) adipose tissue
(d) adipose tissue and fibroblasts

Answer

Answer: (b)

4. The formation of erythrocytes in foetus takes place in
(a) red bone marrow
(b) sarcoplasm
(c) liver and spleen
(d) blood

Answer

Answer: (c)

5. Nasal septum gets damaged. Its recovery requires cartilage known as
(a) elastic cartilage
(b) fibrous cartilage
(c) calcified cartilage
(d) hyaline cartilage

Answer

Answer: (d)

6. Membrane that surrounds the bone is known as
(a) pericardium
(b) periosteum
(c) perichondrium
(d) endosteum

Answer

Answer: (b)

7. Mammalian pinna is supported by
(a) elastic cartilage
(b) hyaline cartilage
(c) white fibrous connective tissue
(d) calcified cartilage

Answer

Answer: (a)

8. Hyaline cartilage does not have
(a) blood capillaries
(b) cells
(c) lacunae
(d) fibers

Answer

Answer: (d)

9. Major inorganic components of vertebrate bone is
(a) potassium hydroxide
(b) calcium phosphate
(c) calcium carbonate
(d) none of the above

Answer

Answer: (b)

10. Haversian canals occur in
(a) humerus
(b) scapula
(c) pubis
(d) clavicle

Answer

Answer: (a)

300+ TOP MCQs on Multiple Allelism and Answers

MCQs on Multiple Allelism :

1. A person with antigens A and B and no antibodies belongs to blood group or in which blood group antibodies are absent
(a) O
(b) AB
(c) B
(d) A

Answer

Answer: (b)

2. Inheritance of ABO blood group system is an example of
(a) dominance
(b) epistasis
(c) partial dominance
(d) multiple allelism

Answer

Answer: (d)

3. During the serological test in which anti-human serum is mixed with the blood of another animal, the blood of this animal gives the thickest precipitate
(a) mule
(b) dog
(c) chimpanzee
(d) gibbon

Answer

Answer: (c)

4. In disputed parentage, blood group analysis of mother, alleged father and child can
(a) not be of any use
(b) only prove that he cannot be the father
(c) certainly prove a man to the father
(d) none of these

Answer

Answer: (b)

Answer

Answer: (d)

6. If a patient with blood group B requires an immediate blood transfusion, this type can be given
(a) AB and B
(b) AB and A
(c) AB and O
(d) B and O

Answer

Answer: (d)

7. In men, this is genetically dominant
(a) Albinism
(b) Haemophilia
(c) Rh positive
(d) color blindness

Answer

Answer: (c)

8. Color of the skin in humans is regulated by
(a) polygenic effect
(b) lethal genes
(c) multiple genes
(d) none of the above

Answer

Answer: (c)

9. The recessive character typically is expressed only when present in a double recessive condition. But, a single recessive gene can express itself in humans when genes are found on
(a) either on autosome or X chromosome
(b) X chromosome of male
(c) X chromosome of female
(d) any autosome

Answer

Answer: (b)

10. Two allelic genes are situated on
(a) any two chromosomes
(b) two non-homologous chromosomes
(c) two homologous chromosomes
(d) same chromosomes

Answer

Answer: (c)

300+ TOP MCQs on Plasmid and Answers

NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. NEET Biology Plasmid Multiple Choice Questions

MCQs on Plasmid :

1. Which of the following gene helps in identifying transformed cells?
(a) plasmid
(b) selectable marker
(c) structural gene
(d) vector

Answer

Answer: (b)

2. If the plasmid and the foreign DNA are cut by the same restriction endonuclease, recombinant DNA can be formed by joining both by

(a) Polymerase III
(b) EcoRI
(c) Ligase
(d) Taq polymerase

Answer

Answer: (c)

3. Find the incorrect statement about plasmids
(a) they are circular
(b) they replicate independently
(c) they are transferrable
(d) they are single stranded

Answer

Answer: (d)

4. The DNA molecule used for integrating foreign gene for cloning is called
(a) vector
(b) carrier
(c) template
(d) transformer

Answer

Answer: (a)

5. Which one of the following is correct for the plasmid pBR322 of E.coli.?

(a) amp^R and tet^R – antibiotic resistance genes
(b) Hind III and EcoRI – selectable markers
(c) rop – reduced osmotic pressure
(d) ori – original restriction enzyme

Answer

Answer: (a)

6. The Ti plasmid is found in
(a) Agrobacterium
(b) Yeast as a 2mm plasmid
(c) Rhizobium of the roots of leguminous plants
(d) Azotobacter

Answer

Answer: (a)

7. Replication of plasmid DNA other than initiation is controlled by
(a) bacterial gene
(b) mitochondrial gene
(c) plasmid DNA
(d) none of these

Answer

Answer: (a)

8. Antibiotics are used in genetic engineering. They are useful
(a) to keep culture free of microbial infections
(b) to select healthy vectors
(c) to identify replication start sites
(d) as selectable markers

Answer

Answer: (d)

9. A single-stranded, radiolabelled molecule of nucleic acids is called
(a) plasmid
(b) vector
(c) probe
(d) selectable marker

Answer

Answer: (c)

10. A vector that can clone only a small DNA fragment is
(a) cosmid
(b) plasmid
(c) Yeast artificial chromosome
(d) Bacterial artificial chromosome

Answer

Answer: (b)

300+ TOP MCQs on Parenchyma Tissue and Answers

MCQs on Parenchyma Tissue :

1. Mostly, the flesh of the fruit is made of ___________.
(a) Collenchyma
(b) Meristem
(c) Collenchyma
(d) Parenchyma

Answer

Answer: (d)

2. In plants, the most common ground tissue is___________.
(a) Cortex
(b) Epidermis
(c) Collenchyma
(d) Parenchyma

Answer

Answer: (d)

3. From mature parenchyma, plant regeneration can occur as__________.
(a) there are no cell walls
(b) they are nucleate
(c) they can dedifferentiate
(d) it forms the bulk of the ground tissue

Answer

Answer: (c)

4. The plant tissues that are known for photosynthesis, secretion and storage are______.
(a) Parenchyma
(b) Collenchyma
(c) Sclerenchyma
(d) Vascular cambium

Answer

Answer: (a)

5. Simple permanent tissue that is food storing is ___________.
(a) Parenchyma
(b) Collenchyma
(c) Scleroid
(d) None

Answer

Answer: (a)

6. Which of the following statement is true about the spongy parenchyma?
(a) Round or oval loosely arranged cells
(b) Abaxially placed to palisade parenchyma
(c) Continues to the abaxial epidermis
(d) All of the above

Answer

Answer: (d)

7. Which of the following statement is true about the palisade parenchyma?
(a) Elongated cells
(b) Adaxially placed
(c) Vertically and parallelly placed
(d) All of these

Answer

Answer: (d)

8. The mesophyll of a dicot leaf is differentiated into _________.
(a) Spongy parenchyma
(b) Palisade parenchyma
(c) Prosenchyma
(d) Both (a) and (b)

Answer

Answer: (d)

9. In TS of the dicotyledonous root, the parenchymatous cells which lie between the xylem and phloem are called ________.
(a) Cortex
(b) Cambium
(c) Connective tissue
(d) Conjunctive tissue

Answer

Answer: (d)

10. Aerenchyma and chlorenchyma are types of ________.
(a) Xylem
(b) Phloem
(c) Vascular bundle
(d) Parenchyma

Answer

Answer: (d)

300+ TOP MCQs on Carbon Cycle and Answers

MCQs on Carbon Cycle :

1. This factor contributes to the carbon cycle
(a) fossil fuel combustion
(b) respiration
(c) photosynthesis
(d) all of these

Answer

Answer: (d)

2. The source of carbon to plants in the carbon cycle is
(a) fossil fuels
(b) carbonate rocks
(c) atmospheric carbon dioxide
(d) all of the above

Answer

Answer: (c)

3. The role of bacteria in the carbon cycle is
(a) Breakdown of organic compounds
(b) Chemosynthesis
(c) Photosynthesis
(d) Assimilation of nitrogen compounds

Answer

Answer: (a)

4. In the carbon cycle, the human body returns carbon to the atmosphere through this way:
(a) formation of glucose
(b) waste products
(c) photosynthesis
(d) cellular respiration

Answer

Answer: (d)

5. Respiration and photosynthesis are central to this process
(a) nitrogen cycle
(b) phosphorous cycle
(c) carbon cycle
(d) sulphur cycle

Answer

Answer: (c)

6. The difference between the phosphorous cycle and carbon cycle lies in the fact that
(a) the phosphorous cycle does not include a gaseous phase but the carbon cycle does
(b) phosphorous does not enter living entities but carbon enters
(c) the phosphorous cycle includes a solid phase, the carbon cycle does not
(d) primary reservoir of the phosphorous cycle is the atmosphere, but rocks are the primary reservoirs for carbon cycle

Answer

Answer: (a)

7. Most of the global warming is due to the perturbation of which of these cycles?
(a) Global nitrogen cycle
(b) Global carbon cycle
(c) Global water cycle
(d) All of these cycles equally contribute

Answer

Answer: (b)

8. This carbon isotope is radioactive and very rare
(a) Carbon – 11
(b) Carbon – 12
(c) Carbon – 13
(d) Carbon – 14

Answer

Answer: (d)

9. By this method, the majority of carbon moves from the lithosphere to the atmosphere
(a) erosion
(b) deposition
(c) weathering
(d) fossil fuel burning

Answer

Answer: (d)

10. These entities sequester most carbon from the atmosphere
(a) Plants
(b) Archaea
(c) Bacteria
(d) Insects

Answer

Answer: (a)