Everyday Science MCQs

Organs combine multiple tissue types for specific functions.
The heart and lungs are examples.

Pencil cores are made mainly of graphite mixed with clay.
Graphite is a form of carbon.

Microorganisms use sugars during fermentation.
The process is used in bread, yogurt, and other foods.

Organ systems coordinate complex tasks.
Examples include the digestive and circulatory systems.

In graphite, each carbon forms three bonds and leaves mobile electrons.
These electrons carry charge along the layers.

Yeast ferments sugars and releases carbon dioxide.
Gas bubbles expand within the dough.

Xylem conducts water and dissolved minerals from roots.
It also helps support the plant.

Diamond and graphite are allotropes of carbon.
Their different structures give very different properties.

Lactic-acid bacteria ferment milk sugar.
The acid causes proteins to thicken and gives yogurt its sour taste.

Phloem transports sucrose and other organic nutrients.
Movement can occur toward growing or storage tissues.

Each carbon atom bonds strongly to four others in diamond.
The rigid network resists deformation.

Pasteurization heats food or drink for a specified time.
It improves safety while limiting quality changes.