Daily Trivia Quiz - Day 248 (2026-07-17)

Question 1

Why is a lysosome called the cell's recycling center, not just a trash bin?

Accepted Answer

It uses enzymes to break down old structures and molecules for reuse

Answer

It stores old structures without breaking them down

Answer

It mainly packages glucose into fat droplets

Answer

It uses ribosomes to translate waste back into protein

Question 2

Why does pressing a string shorter on a string instrument raise the pitch?

Accepted Answer

The vibrating length gets shorter, so the frequency rises

Answer

Shortening the string must also lower its tension

Answer

Pressing the string mainly changes sound speed in the air

Answer

The shorter string makes sound travel more slowly

Question 3

Why is the cell membrane more like a flowing double-layered oil film than a plastic bag?

Accepted Answer

The phospholipid bilayer is fluid and full of embedded proteins

Answer

The membrane is mostly made of hard cellulose

Answer

Membrane sugars form a thick rigid shell

Answer

Membrane proteins only support the cell's shape

Question 4

In dry regions, why can planting more trees sometimes become a bad idea?

Accepted Answer

Overly dense planting can overdraw scarce water

Answer

Denser trees make each tree reach groundwater more easily

Answer

Once shade forms, rainfall immediately increases

Answer

Drought-tolerant trees usually do not need soil water

Question 5

Bones look like hard supports. Why do doctors still treat them as living tissue?

Accepted Answer

Bone is constantly remodeling and repairing itself

Answer

Bones change only during childhood

Answer

Bones are mostly mineral blocks with no cells

Answer

Once formed, bones cannot repair themselves

Question 6

Why does bass travel through walls more easily than treble?

Accepted Answer

Low frequencies have longer wavelengths and more easily shake structures

Answer

Low-frequency sound has shorter wavelengths that slip through cracks

Answer

High frequencies more easily shake an entire wall

Answer

Bass mainly travels by reflecting off light in the room

Question 7

Scurvy can damage gums and wound healing. Which synthesis process is failing?

Accepted Answer

Vitamin C is needed for collagen synthesis

Answer

Vitamin C directly forms the main chain of collagen fibers

Answer

Vitamin C mainly fixes calcium into tooth enamel

Answer

Vitamin C can replace protein in tissue repair

Question 8

When salt-tolerant plants show tiny salt crystals on their leaves, what is probably happening?

Accepted Answer

Salt glands are moving excess salt onto the leaf surface

Answer

All transpired water is crystallizing on the leaf surface

Answer

Windblown pollen is crystallizing on the leaves

Answer

Chlorophyll is breaking down into salt grains under strong light

Question 9

Why does eating more protein not automatically mean building more muscle?

Accepted Answer

Muscle growth also needs training stimulus, energy, and recovery

Answer

Enough protein removes the need for training stimulus

Answer

Enough protein means sleep no longer affects recovery

Answer

Muscle growth is mainly determined by one meal's protein dose

Question 10

Mangroves live in salty coastal mud. How do they avoid simply being 'pickled' by salt?

Accepted Answer

They use salt-tolerance mechanisms such as root filtering and leaf salt excretion

Answer

They absorb fresh water only right before high tide

Answer

Their bark keeps seawater away from the roots

Answer

Their fruit stores enough water to replace root uptake