NEET Test Series-2021/NEET Biology MCQS Mock Test Paper 17 Sample Test,Sample questions

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

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


Question:
 ‘Club moss’ belongs to

1.Fungi

2.Algae

3.Bryophyta

4.Pteridophyta

Posted Date:-2021-02-22 02:07:09


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

1. diatoms

2. lichens

3. bacteria

4.viruses

Posted Date:-2021-02-22 02:07:09


Question:
 Pteridophytes and Bryophytes differ in having

1.Spermatozoids

2.Archegonia

3.Separate gametophytes

4.conducting system

Posted Date:-2021-02-22 02:07:09


Question:
 Reduction division in pteridophytes occurs in

1.Prothallus is formed

2.Gametes are formed

3.spores are formed

4.sex organs are formed

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


Question:
 Sporophytic and gametophytic phases are independent in

1.Bryophytes

2.Pteridophytes

3.Phaeophytes

4.Gymnosperms

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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

1.Mutase

2.Ligase

3. Polymerase I

4.Ribonuclease

Posted Date:-2021-02-22 02:07:09


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

1. 95-99%

2.65-75%

3.45-50%

4.1-5%

Posted Date:-2021-02-22 02:07:09


Question:
 This is the outermost cranial appendage

1. Dura mater

2. Pia mater

3. Skull

4.Arachnoid

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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

1.Carbon dioxide

2.Nitrogenous waste

3.Food

4.All of the above

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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

1.Veins

2.Heart

3. Capillaries

4.Arteries

Posted Date:-2021-02-22 02:07:09


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

1. ATTGCA

2.UGGACC

3.UAACGG

4.ATCGCC

Posted Date:-2021-02-22 02:07:09


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

1. Ligase

2. Helicase

3.Topoisomerase

4.Polymerase

Posted Date:-2021-02-22 02:07:09


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)

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


Question:
In Pteridophytes; the dominant generation is

1. gametophytic

2.haploid

3.diploid

4.triploid

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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)

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


Question:
DNA fingerprinting recognizes the differences in

1.satellite DNA

2.bulk DNA

3. Repetitive DNA

4. both (a) and (c)

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


Question:
Phloem is without ___________ in pteridophytes

1.Bast fibres

2.Companion cells

3.Phloem parenchyma

4.sieve cells

Posted Date:-2021-02-22 02:07:09


Question:
Pick the correct one

1. Serum = Blood + Fibrinogen

2. Lymph = Plasma + RBC + WBC

3. Plasma = Blood – Lymphocytes

4.Blood = Plasma + RBC + WBC

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


Question:
Respiration and photosynthesis are central to this process

1. nitrogen cycle

2.phosphorous cycle

3. carbon cycle

4.sulphur cycle

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


Question:
The respiratory pigment in human beings is

1. insulin

2.enzymes

3. haemoglobin

4.none of these

Posted Date:-2021-02-22 02:07:09


Question:
The role of bacteria in the carbon cycle is

1.Breakdown of organic compounds

2.Chemosynthesis

3. Photosynthesis

4.Assimilation of nitrogen compounds

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


Question:
The type of coiling in DNA is

1.Zig-zag

2. Left-handed

3. Opposite

4. Right-handed

Posted Date:-2021-02-22 02:07:09


Question:
These entities sequester most carbon from the atmosphere

1.Plants

2. Archaea

3.Bacteria

4.Insects

Posted Date:-2021-02-22 02:07:09


Question:
This carbon isotope is radioactive and very rare

1.Carbon – 11

2.Carbon – 12

3.Carbon – 13

4.Carbon – 14

Posted Date:-2021-02-22 02:07:09


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

1.Dura mater

2.Pia mater

3.Arachnoid

4.Skull tissue

Posted Date:-2021-02-22 02:07:09


Question:
This factor contributes to the carbon cycle

1.fossil fuel combustion

2.respiration

3.photosynthesis

4.all of these

Posted Date:-2021-02-22 02:07:09


Question:
This force can stabilize a DNA double-helix 

1. Hydrophilic sugar-phosphate groups are found on the exterior of the helix where interaction with water occurs

2.Hydrophobic bases are present in the interior of the helix; each base-pair is stabilized by the same number of hydrogen bonds

3.covalent base stacking interactions may take place between neighbouring bases within the same strand in the helix

4. non-covalent N-glycosidic bonds may form between nitrogenous bases in opposite strands in the helix

Posted Date:-2021-02-22 02:07:09


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

1. Pteridophyta

2.Bryophyta

3. Angiosperms

4. Gymnosperms

Posted Date:-2021-02-22 02:07:09


Question:
This has a smaller intestine

1. carnivore

2.herbivore

3. both (a) and (b)

4.none of the above

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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)

Posted Date:-2021-02-22 02:07:09


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

Posted Date:-2021-02-22 02:07:09


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