Everyday Science
Everyday Science MCQs With Answers
741 Everyday Science MCQs for CSS, PPSC, FPSC, NTS and entry-test preparation. Take a scored quiz instead →
What is a defining structural feature of a virus that distinguishes it from a typical living cell, such as a bacterium?
AA virus consists of genetic material enclosed in a protein coat, without the full cellular structure of a living cell
BA virus is always significantly larger than a bacterial cell
CA virus can only survive at extremely high temperatures
DA virus always contains chlorophyll for photosynthesis
Which naturally occurring radioactive element is most commonly used as fuel in nuclear power plants?
AGold
BSilver
CAluminum
DUranium
What term describes the complete disappearance of a species, meaning no living members of that species remain anywhere on Earth?
AHibernation
BDomestication
CMigration
DExtinction
What is the primary role of the diaphragm, a dome-shaped muscle located beneath the lungs?
APumping blood throughout the body
BFiltering toxins from the blood
CProducing hormones for digestion
DContracting and relaxing to facilitate breathing
What term describes the natural process by which certain bacteria convert atmospheric nitrogen gas into compounds that plants can absorb and use?
ANitrogen fixation
BPhotosynthesis
CFermentation
DRespiration
Animals are broadly classified as vertebrates or invertebrates based on which characteristic?
AWhether they can fly
BWhether they possess a backbone
CWhether they are warm-blooded or cold-blooded
DWhether they live on land or in water
Blood plasma, the liquid component of blood, primarily serves what function?
ADirectly transporting oxygen through hemoglobin
BClotting wounds on its own
CCarrying blood cells, nutrients, hormones, and waste products throughout the body
DProducing new blood cells
Alkali metals, found in the first group of the periodic table, are generally known for what characteristic?
AExisting only as gases at room temperature
BBeing highly reactive, especially with water
CBeing extremely unreactive and stable
DBeing commonly used as insulators
What term describes animals, such as reptiles, whose internal body temperature largely depends on their external environment rather than being internally regulated?
ACold-blooded, or ectothermic, animals
BHibernating animals only
CNocturnal animals only
DWarm-blooded, or endothermic, animals
Where in the human body are most blood cells primarily produced?
AIn the bone marrow
BIn the lungs
CIn the stomach
DIn the liver exclusively