NEET Test Series-2021 to 2022/NEET Biology MCQS Mock Test Paper 16 Sample Test,Sample questions

Question:
A DNA molecule in which both strands have radioactive thymidine is permitted to replicate in an environment that contains non-radioactive thymidine. What is the right number of DNA molecules which possess some radioactive thymidine post three duplications?

1.one such molecule

2.two such molecules

3.four such molecules

4.eight such molecules


Question:
An injury sustained by the hypothalamus is most likely to interrupt

1.coordination during locomotion

2.short term memory

3.regulation of body temperature

4. executive function like decision making


Question:
‘Club moss’ belongs to

1. Fungi

2. Algae

3.Bryophyta

4. Pteridophyta


Question:
 Even after the brain of a frog has been crushed; it still responds to a pinch on the leg by drawing it away. This act is an example of

1. Conditioned reflex

2.Simple reflex

3.Automated motor response

4.Neurotransmitter induced response


Question:
 In DNA; the enzyme which breaks the H2 bonds is

1.Ligase

2.Helicase

3. Topoisomerase

4.Polymerase


Question:
 In humans; the Alzheimer disease is linked with the deficiency of

1.acetylcholine

2. dopamine

3.glutamic acid

4.Gamma Amino Butyric Acid (GABA)


Question:
 In Pteridophytes; the dominant generation is

1. gametophytic

2.haploid

3. diploid

4. triploid


Question:
 In which of the following groups would you place a plant that produces spores; lacks seeds and has vascular tissue?

1. Bryophyte

2.Algae

3.Pteridophyte

4.Gymnosperm


Question:
 Most of the global warming is due to the perturbation of which of these cycles?

1. Global nitrogen cycle

2.Global carbon cycle

3.Global water cycle

4. All of these cycles equally contribute


Question:
 Pick the correct one

1.Serum = Blood + Fibrinogen

2.Lymph = Plasma + RBC + WBC

3.Plasma = Blood – Lymphocytes

4. Blood = Plasma + RBC + WBC


Question:
 Respiration and photosynthesis are central to this process

1. nitrogen cycle

2.phosphorous cycle

3.carbon cycle

4.sulphur cycle


Question:
 The bases are held together in a DNA double helix by hydrogen bonds. These bonds are

1.Ionic bonds

2.Covalent bonds

3.Non-covalent bonds

4.Van der Waals forces


Question:
 The type of coiling in DNA is

1.Zig-zag

2.Left-handed

3.Opposite

4.Right-handed


Question:
 Which of the following is deemed to be vital in the development of seed habit?

1. Heterospory

2.Dependant sporophyte

3.Free-living gametophyte

4. Haplontic life cycle


Question:
 Which of these functions will be affected if the medulla oblongata is damaged?

1.Vision

2. Thermoregulation

3.Memory

4.Tactile sensation – response when prickled with a needle


Question:
By this method; the majority of carbon moves from the lithosphere to the atmosphere

1.erosion

2. deposition

3.weathering

4. fossil fuel burning


Question:
Entities exhibiting properties of both non-living and living are:

1.diatoms

2.lichens

3.bacteria

4. viruses


Question:
Here; the maximum exchange of material between blood and surrounding cells takes place

1. Veins

2.Heart

3.Capillaries

4.Arteries


Question:
If the DNA strand has nitrogenous base sequence ATTGCC; the mRNA will have?

1.ATTGCA

2.UGGACC

3.UAACGG

4.ATCGCC


Question:
In photosynthesis; the chlorophyll is used for

1. No function

2.reduction of carbon dioxide

3.breaking down the water molecule

4.absorbing light


Question:
In the carbon cycle; the human body returns carbon to the atmosphere through this way:

1. formation of glucose

2.waste products

3. photosynthesis

4.cellular respiration


Question:
In this type of DNA replication; of the two newly formed molecules; one is purely a new one and the other is an old one

1.dispersive

2.conservative

3. semiconservative

4.both (b) and (c)


Question:
Mostly; the flesh of fruit is made of

1. Collenchyma

2.Parenchyma

3.Meristem

4.Schlerids


Question:
Phloem is without ___________ in pteridophytes

1.Bast fibres

2. Companion cells

3.Phloem parenchyma

4.sieve cells


Question:
Prosenchyma is a type of

1. Chlorenchyma

2.Collenchyma

3.Sclerenchyma

4. Parenchyma


Question:
Prothallus represents

1. sporophytic phase in a fern

2.gametophytic phase in a fern

3. sporophytic phase in a gymnosperm

4.gametophytic phase in a gymnosperm


Question:
Pteridophytes and Bryophytes differ in having

1.Spermatozoids

2.Archegonia

3. Separate gametophytes

4.conducting system


Question:
Reduction division in pteridophytes occurs in

1. Prothallus is formed

2.Gametes are formed

3. spores are formed

4.sex organs are formed


Question:
Reduction of blood pH will

1.reduces the rate of heartbeat

2.reduces the blood supply to the brain

3.releases bicarbonate ions by the liver

4.decrease the affinity of haemoglobin with oxygen


Question:
Sporophytic and gametophytic phases are independent in

1.Bryophytes

2.Pteridophytes

3.Phaeophytes

4.Gymnosperms


Question:
The difference between the phosphorous cycle and carbon cycle lies in the fact that

1.the phosphorous cycle does not include a gaseous phase but the carbon cycle does

2.phosphorous does not enter living entities but carbon enters

3.the phosphorous cycle includes a solid phase; the carbon cycle does not

4.primary reservoir of the phosphorous cycle is the atmosphere; but rocks are the primary reservoirs for carbon cycle


Question:
The enzymes found in intestinal juice finally convert

1.fats into fatty acids and glycerol

2.proteins to amino acids

3.complex carbohydrates into glucose

4.all of these


Question:
The process of DNA replication is affected by an enzyme known as

1.Mutase

2.Ligase

3. Polymerase I

4.Ribonuclease


Question:
The respiratory pigment in human beings is

1.insulin

2.enzymes

3.haemoglobin

4.none of these


Question:
The role of bacteria in the carbon cycle is

1.Breakdown of organic compounds

2. Chemosynthesis

3.Photosynthesis

4.Assimilation of nitrogen compounds


Question:
The source of carbon to plants in the carbon cycle is

1. fossil fuels

2.carbonate rocks

3.atmospheric carbon dioxide

4.all of the above


Question:
The stimulation of a muscle fibre by a motor neuron occurs at the

1. myofibril

2. transverse tubules

3.neuromuscular junction

4.sarcoplasmic reticulum


Question:
The tissue where cells are thin-walled; living; isodiametric along with intercellular spaces is

1.Arenchyma

2.Prosenchyma

3. Collenchyma

4.Parenchyma


Question:
The total DNA comprises what amount of cytoplasmic DNA in cells?

1.95-99%

2.65-75%

3.45-50%

4.1-5%


Question:
These entities sequester most carbon from the atmosphere

1.Plants

2.Archaea

3.Bacteria

4.Insects


Question:
This carbon isotope is radioactive and very rare

1.Carbon – 11

2.Carbon – 12

3.Carbon – 13

4.Carbon – 14


Question:
This cranial meninges is in close proximity of the brain tissue

1.Dura mater

2.Pia mater

3. Arachnoid

4. Skull tissue


Question:
This factor contributes to the carbon cycle

1.fossil fuel combustion

2.respiration

3.photosynthesis

4.all of these


Question:
This group does not have seeds but has vascular tissues and produces spores

1.Pteridophyta

2.Bryophyta

3. Angiosperms

4.Gymnosperms


Question:
This has a smaller intestine

1. carnivore

2.herbivore

3.both (a) and (b)

4. none of the above


Question:
This is the outermost cranial appendage

1.Dura mater

2. Pia mater

3.Skull

4.Arachnoid


Question:
This part of the human brain is also known as the emotional brain

1.Epithalamus

2. Limbic system

3.Broca’s area

4. Corpus callosum


Question:
This statement is not associated with midbrain

1.the ventral portion of the midbrain is composed of mainly four; round swellings known as corpora quadrigemina

2.located between thalamus of the forebrain and pons of the hindbrain

3.the canal called cerebral aqueduct passes through the midbrain

4.hindbrain and midbrain constitute the brain stem


Question:
This structure guards the opening of the hepatopancreatic duct into the duodenum

1. Pyloric sphincter

2.Sphincter of Oddi

3. Semilunar valve

4.Ileocaecal valve


Question:
What is the person with these symptoms suffering from? Outbursts of emotions; unpredictable moods; quarrelsome behaviour; conflicts with others

1.Mood disorders

2. Addictive diroders

3. Schizoprenia

4.Borderline personality disorder (BPD)


Question:
Which of these substances is transported by the blood plasma?

1.Carbon dioxide

2.Nitrogenous waste

3.Food

4.All of the above


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