NEET Test Series-2021/NEET Biology MCQS Mock Test Paper 39 Sample Test,Sample questions

Question:
A single molecule of glucose generates _________ molecules of acetyl CoA, which enters the Krebs cycle.

1.4

2.3

3.2

4.1

Posted Date:-2021-02-22 06:41:27


Question:
Acetyl CoA is formed from pyruvate by__________ reaction

1.Dehydration

2. Reduction

3. Oxidative decarboxylation

4.Dephosphorylation

Posted Date:-2021-02-22 06:41:27


Question:
Acetylcholine is a neurotransmitter enabling communication between muscles and nerves. In case of an interruption in the interaction between acetylcholine and acetylcholine receptor sites on the muscles, this condition can occur in _______.

1.Botulism

2.Myasthenia gravis

3.Multiple sclerosis

4. Both A and B

Posted Date:-2021-02-22 06:41:27


Question:
ATP synthesis is powered by

1. Coenzyme motive force

2. cAMP

3.proton gradient

4.GTP hydrolysis

Posted Date:-2021-02-22 06:41:27


Question:
 In the angiosperms, the endosperm is formed

1.before fertilization

2.after fertilization

3.along with fertilization

4.None of the above

Posted Date:-2021-02-22 06:41:27


Question:
 The typhlosole in earthworm is related to

1.respiration

2.excretion

3.absorption

4.reproduction

Posted Date:-2021-02-22 06:41:27


Question:
Chloragogen cells are found in

1.Blood of earthworm

2.The coelomic fluid of the earthworm

3.Blood of cockroach

4.The body wall of leucosolenia

Posted Date:-2021-02-22 06:41:27


Question:
Colour of the body in earthworms is due to the presence of

1.Haemoglobin

2.Blood

3.Porphyrin

4.Haemocyanin

Posted Date:-2021-02-22 06:41:27


Question:
Dopamine, serotonin and noradrenaline are collectively called _______.

1. Amines

2.Hallucinogens

3.Anxiolytics

4.Neurotransmitters

Posted Date:-2021-02-22 06:41:27


Question:
FAD is reduced in which of the reaction of the Kreb’s cycle?

1. Isocitrate to oxaloacetate

2.Succinyl CoA to Succinate

3. Fumarate to malate

4. Succinate to fumarate

Posted Date:-2021-02-22 06:41:27


Question:
If the cell stimulation is strong, then the strength of the action potential produced would be ______.

1. Weaker than the produced by weak stimulation

2.Stronger than the produced by weak stimulation

3. Double then the produced by the weak stimulation

4. No different to the produced by weak stimulation

Posted Date:-2021-02-22 06:41:27


Question:
In earthworm, the mouth is located on

1.Stomium

2.Peristomium

3.Prostomium

4.Protostomium

Posted Date:-2021-02-22 06:41:27


Question:
Which of the tissue culture will form a triploid plant

1. endosperm

2.pollen

3.megaspore

4.ovule

Posted Date:-2021-02-22 06:41:27


Question:
Krebs cycle occurs in aerobic respiration due to

1.Electron transport chain requires aerobic conditions to operate

2.Oxygen is a reactant

3.Oxygen has a catalytic function

4.All of the above

Posted Date:-2021-02-22 06:41:27


Question:
Product of Krebs cycle essential for oxidative phosphorylation is _______

1.NADPH and ATP

2.Acetyl CoA

3.CO2 and oxaloacetate

4.NADH and FADH2

Posted Date:-2021-02-22 06:41:27


Question:
Region of earthworm that is a forest of nephridia is

1.Pharyngeal region

2.Clitellar region

3.Typhlosolar region

4.Intestinal region

Posted Date:-2021-02-22 06:41:27


Question:
The cavity of the diencephalon is known as _______.

1.First ventricle

2.Third ventricle

3.Second ventricle

4.Fourth ventricle

Posted Date:-2021-02-22 06:41:27


Question:
The earthworm is placed under the group

1.Polychaeta

2.Hirudinea

3.Oligochaeta

4.Crustacea

Posted Date:-2021-02-22 06:41:27


Question:
The entry of pyruvate into the TCA cycle is inhibited by the presence of a high cellular concentration of

1.Pyruvate

2.NADH

3.Coenzyme A

4.AMP

Posted Date:-2021-02-22 06:41:27


Question:
The excess amount of produced neurotransmitters by presynaptic neurons is __________.

1. Taken up by postsynaptic neurons

2.Recycled back into the presynaptic neuron

3.Removed and taken around the rest of the body

4.Eliminated by substances contained within the cell body

Posted Date:-2021-02-22 06:41:27


Question:
The mode of communication between the neurons by sending electrical impulses known as _______.

1.Membrane potentials

2.Neuromodulators

3. Neurotransmitters

4. Action potentials

Posted Date:-2021-02-22 06:41:27


Question:
The most effective organ for food digestion in earthworm is

1. Mouth

2.Buccal cavity

3.Pharynx

4.Stomach

Posted Date:-2021-02-22 06:41:27


Question:
The parasite found in the seminal vesicle of earthworms are

1.Nosema

2. Sarcocystis

3.Monocystis

4.Nyctotherus

Posted Date:-2021-02-22 06:41:27


Question:
The typhlosole found in Pheretima occurs in

1.Stomach

2.Intestine

3.Oesophagus

4.Gizzard

Posted Date:-2021-02-22 06:41:27


Question:
This animal does not show any metamorphosis of larval stage

1.Asteria

2.Musca domestica

3.Pheretima Posthuma

4.Butterfly

Posted Date:-2021-02-22 06:41:27


Question:
Which of the following disorder causes dopamine neurons to die?

1.Seizure disorder

2.Multiple sclerosis

3.Parkinson’s disease

4. Lou Gehrig’s disease

Posted Date:-2021-02-22 06:41:27


Question:
Which of the following is a genetic disorder that induces neurons in the brain to drain away and die?

1. Poliomyelitis

2.Encephalitis

3. Multiple sclerosis

4.Huntington’s disease

Posted Date:-2021-02-22 06:41:27


Question:
Which of the following is called the common neurotransmitter?

1.Acetylcholine

2.Dopamine

3.Serotonin

4.All of the above

Posted Date:-2021-02-22 06:41:27


Question:
Which of the following is not formed during the Krebs cycle?

1.Lactate

2.Isocitrate

3.Succinate

4.Both (a) and (b)

Posted Date:-2021-02-22 06:41:27


Question:
Which of the following is the cause for transmission of nerve impulse through nerve fibre in a single direction?

1.Neurotransmitters released by dendrites.

2. Neurotransmitters released by axon endings.

3.Nerve fibre is insulated by a medullary sheath

4. None of the above.

Posted Date:-2021-02-22 06:41:27


Question:
Which of the intermediate of the Kreb’s cycle is utilised in the formation of amino acids?

1. Citric acid

2.Malic acid

3.Isocitric acid

4.𝛼-ketoglutaric acid

Posted Date:-2021-02-22 06:41:27


Question:
________ accepts hydrogen from malate

1.FAD

2.NAD

3.NADP

4.FMN

Posted Date:-2021-02-22 06:41:27


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