Daily Practice - 13+ Common Entrance

Complete the word equation for photosynthesis: carbon dioxide + water produces ___ + ___.Complete the word equation for photosynthesis: carbon dioxide + water produces ___ + ___.

A pupil views onion cells under a microscope after adding a drop of iodine solution to the slide. State why the iodine solution was added.

State one way the alveoli are adapted for efficient gas exchange.

The density of olive oil is 0.92 g/cm³. State, with a reason, whether olive oil would float or sink in water (density 1.0 g/cm³).The density of olive oil is 0.92 g/cm^3. State, with a reason, whether olive oil would float or sink in water (density 1.0 g/cm^3).

Describe the test for carbon dioxide gas, and state the positive result.