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 →
Which class of nutrients serves as the body’s primary and most readily available source of energy?
AVitamins
BWater
CCarbohydrates
DMinerals
What is the name of the largest artery in the human body, which carries oxygenated blood directly from the heart?
APulmonary artery
BCoronary artery
CAorta
DVena cava
Which class of nutrients is primarily needed by the body for the growth and repair of tissues, such as muscles?
AVitamins
BProteins
CCarbohydrates
DFiber
What is the primary function of the tiny blood vessels called capillaries?
AProducing new red blood cells
BPumping blood at high pressure
CAllowing the exchange of oxygen, nutrients, and waste between blood and body tissues
DStoring large reserves of blood
Besides providing a concentrated source of stored energy, what other important function do dietary fats serve in the body?
AProviding insulation and protecting internal organs
BProducing red blood cells
CRegulating heart rhythm directly
DDirectly transmitting nerve signals
What is a primary function of the human lymphatic system?
ADraining excess fluid from tissues and supporting immune defense
BRegulating heart rate
CPumping oxygenated blood to the lungs
DProducing digestive enzymes
Approximately what percentage of the average adult human body’s weight is made up of water?
AAbout 60 percent
BAbout 90 percent
CAbout 10 percent
DAbout 30 percent
What are the specialized proteins called that the immune system produces to specifically target and neutralize particular pathogens?
ANeurotransmitters
BEnzymes
CHormones
DAntibodies
What term describes the movement of water molecules across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration?
AFiltration
BDiffusion
COsmosis
DActive transport
What term describes the basic biological unit of heredity, made of DNA, that carries instructions for a specific inherited trait?
AEnzyme
BChromosome
CGene
DHormone