Which of the following are responsible for the detection of changes in environment?
Correct answer A. Receptors
Subject / 1,067 questions
MDCAT Biology MCQs
Page 37 of MDCAT Biology multiple-choice questions with answers. Tap an option to check yourself.
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- Biological Molecules 74
- Coordination and Control 72
- Biology Diagnostic 70
- Cell Structure and Function 67
- Biotechnology 65
- Reproduction 58
- Bioenergetics 55
- Circulation 50
- Inheritance 48
- Digestion 45
- Immunity 45
- Support and Movement 45
- Acellular Life (Viruses) 45
- Homeostasis 45
- Respiration and Gaseous Exchange 45
- Evolution 45
- Enzymes 45
- Cell Cycle 41
- Chromosome and DNA 40
- Biology Introduction 38
- Ecosystem 27
Co-ordination results in
Correct answer D. All of these
Maximum speed of nerve impulse transmission is
Correct answer C. 120m/sec
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Na+ -K+ ATPase pump is important for:
Correct answer C. Recovery of resting potential.
Normal action potential of a neuronal cell is:
Correct answer A. plus 50 mv
Normal resting membrane potential of a neuron is
Correct answer C. ? 70 mv
Cell membrane under resting conditions is impermeable to all the ions except
Correct answer B. K+
Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an ____ process.
Correct answer A. Active
Type of neurons found exclusively in CNS are:
Correct answer C. Associative neurons
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Which of the following statement about neuron is incorrect?
Correct answer D. Like all the living cell, when they mature and divide to form similar cells.
Nissl’s granules are present in which part of the neuron?
Correct answer D. Soma.
Which type of sensory structures carry deep pressure and vibration sensations?
Correct answer C. Pacinian corpuscles.
Which type of sensory structures carrying the touch sensations are present in papillae extending into ridges of the fingertips?
Correct answer B. Meissner's Corpuscles.
Type of sensations carried by nociceptors are:
Correct answer D. Pain
Which type of the receptors are present in the ear?
Correct answer B. Mechanoreceptors
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Which of the following is used in brewing industry to promote malting:
Correct answer A. Gibberellins
The only promoter of leaf senescence in the following plant hormones is:
Correct answer D. Abscisic Acid
Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering:
Correct answer A. Gibberellins
Which of the following is antagonist to Auxin in terms of promotion of stem growth?
Correct answer C. Abscisic Acid
Chemically auxins are
Correct answer D. Indole acetic acid.