Final answer:
You can use objects like water bottles, glasses, graduated pipettes, and capillary action to hold thin tubes while using them to hold liquids.
Step-by-step explanation:
You can use various objects to hold thin tubes while using them to hold liquids. You can use objects like water bottles, glasses, graduated pipettes, and capillary action to hold thin tubes while using them to hold liquids. For example, you can use a water bottle or a glass with a round cross-section and smooth, vertical sides.
Another option is to use a graduated pipette, which is a pre-sterilized glass or plastic tube specifically designed for transferring specific volumes of liquids accurately.
Additionally, capillary action allows liquids to be held in thin tubes. When one end of a small diameter tube is immersed in a liquid, the liquid creeps up the inside of the tube due to the adhesive forces between the liquid and the tube molecules.