Which planet is known as the “morning star”?
Correct answer D. Venus
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Everyday Science MCQs
Page 96 of Everyday Science multiple-choice questions with answers. Tap an option to check yourself.
Page 96 of 198
Which germ layer gives rise to the endoskeleton?
Correct answer C. Mesoderm
Which of these planets has the longest day?
Correct answer B. Venus
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What is ecdysone?
Correct answer B. A hormone that regulates moulting in arthropods
Approximately what percentage of the body’s total oxygen and blood supply does the human brain use?
Correct answer D. 20
Which statement about the arthropod exoskeleton is incorrect?
Correct answer A. It contains joints for the same purpose as those in the human skeletal system
Which form of tobacco smoking typically involves only slight inhalation?
Correct answer B. Pipes and cigars
What causes rigor mortis, the stiffening of the body after death?
Correct answer C. Unavailability of ATP, which is necessary to break the link between actin and myosin
At roughly what height above the Earth’s surface is the ozone layer found?
Correct answer D. 20 to 30
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What is the exoskeleton (shell) of a marine snail mainly made of?
Correct answer C. CaCO3
What is the innermost layer of the Earth?
Correct answer A. Core
During muscle contraction, which step follows immediately after Ca2+ binds to troponin?
Correct answer C. Tropomyosin gets removed from the binding sites of actin filaments
A lack of vitamin B1 leads to which disease?
Correct answer C. Beriberi
During muscle contraction the myosin and actin filaments keep the same length, so what change takes place?
Correct answer B. Z lines get closer
What type of lens is used to correct short-sightedness?
Correct answer C. Concave lens
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Which layer makes up most of the exoskeleton of an arthropod?
Correct answer A. Procuticle
Which part of the nervous system controls reflex actions in the head region?
Correct answer A. Brain
In a cross section of a sarcomere, how many actin filaments surround each myosin filament?
Correct answer D. 6
What is the repetition of properties of elements at regular intervals called?
Correct answer A. Periodicity of property
Which statement about molluscs is incorrect?
Correct answer A. They move by tube feet