Science and Biology Basics Quiz

Drivel means silly or nonsensical talk/writing - worthless content. Think of someone speaking nonsense. The other options are unrelated words.

The liver is called the body's chemical factory because it performs 500+ vital functions including detoxification, protein synthesis, and bile production. 'Lever' is a misspelling of 'liver'.

ATP (Adenosine Triphosphate) is the energy currency of the cell - it stores and transfers energy within cells. DNA stores genetic info, RNA helps protein synthesis, amino acids build proteins.

Peptic ulcers develop in the stomach lining (gastric ulcers) or upper part of small intestine. The term 'peptic' relates to pepsin digestion. Stomach is correct.

DNA (Deoxyribonucleic Acid) carries genetic information responsible for inheritance. RNA helps in protein synthesis, amino acids are protein building blocks, the brain is an organ.

An adult human body has 206 bones. This includes 80 axial bones (skull, vertebral column, thoracic cage) and 126 appendicular bones (limbs and girdles). Babies are born with around 270 bones, but many fuse together during growth.

UV radiation damages DNA in skin cells, which can lead to uncontrolled cell growth and skin cancer. This is why sunscreen and protective clothing are recommended. UV doesn't directly cause brain tumors, heart attacks, or kidney failure - those have different causes.

Arteries carry oxygenated (pure) blood away from the heart to body tissues, except for the pulmonary artery. Veins typically carry deoxygenated blood back to the heart. The heart pumps blood but doesn't carry it - it's the pumping organ.

Pulmonary veins are unique - they're the only veins that carry oxygenated (pure) blood from the lungs to the left atrium of the heart. All other veins carry deoxygenated blood. This exceptional nature is because they're returning blood from where oxygenation occurred.

K is the chemical symbol for Potassium, derived from its Latin name 'Kalium'. Potassium is an alkali metal (atomic number 19) essential for nerve function and cellular processes. Gold is Au, Silver is Ag, Copper is Cu.

Nerves (neurons) are specialized cells that detect and respond to various stimuli - electrical, chemical, mechanical - by generating action potentials. While eyes contain nerves, the nerves throughout the body are the fundamental responders. Blood cells don't respond to stimuli in the same way.

Cu is the chemical symbol for Copper, from its Latin name 'Cuprum'. Copper is a transition metal (atomic number 29) known for its electrical conductivity and use in alloys. Silver is Ag, Gold is Au, Potassium is K.

The human eye contains a convex lens that converges light rays onto the retina. This biconvex lens can change shape (accommodation) to focus on objects at different distances. Concave lenses diverge light, which is not what the eye needs for focusing.

Ag is the chemical symbol for Silver, derived from its Latin name 'Argentum'. Silver is a transition metal (atomic number 47) valued for jewelry, electronics, and antibacterial properties. Gold is Au, Copper is Cu. Note: option C has a typo - should be 'Platinum'.

Cholesterol is a major risk factor for heart attacks as it can build up in arteries, forming plaques that restrict blood flow. While not the sole cause, high cholesterol significantly increases cardiovascular risk. The other options (protein, carbon, aluminium) are not directly linked to heart attack risk in the same way.

Au is the chemical symbol for Gold (from the Latin 'aurum'). This is a standard element symbol that students should memorize. The other symbols are Sn (Tin), Cu (Copper), and Ag (Silver).

Pt is the chemical symbol for Platinum. The question has a typo in option B ('Platium' instead of 'Platinum'), but this is still the intended correct answer. The other options are incorrect: Au is Gold, Ag is Silver, Cu is Copper.