Everyday Science MCQs

Photosynthesis stores light energy in glucose.
Oxygen is released as a by-product.

Polymers consist of repeating monomer units.
Many plastics, fibers, and biological molecules are polymers.

Many foodborne bacteria grow quickly at warm temperatures.
Prompt refrigeration reduces the risk.

Carbon dioxide supplies carbon for glucose formation.
It enters leaves mainly through stomata.

Strong polymer structures can resist decomposition.
This durability is useful but creates waste-management problems.

Cells are the smallest units capable of carrying out life processes.
All living organisms consist of one or more cells.

Splitting water during photosynthesis releases oxygen.
The gas diffuses out through stomata.

Natural gas consists mainly of methane.
It burns relatively cleanly compared with coal.

The nucleus contains most of the cell's genetic material.
It directs protein production and cell activities.

Chlorophyll absorbs mainly blue and red light.
Its green color results from reflected green wavelengths.

Liquefied petroleum gas is mainly propane and butane.
Pressure keeps these gases liquid in cylinders.

Ribosomes join amino acids according to genetic instructions.
They may be free in the cytoplasm or attached to rough ER.