Which of the following is a chemical change?

formation of a solid from two liquids

phase change

change in surface area

volume change

What term describes a pure substance that is made up of only one type of atom? matter, rock, compound or element?

Which number is closest to the estimated number of stars in the Milky Way galaxy? A. 200 thousand B. 200 million C. 200 billion D. 200 trillion

Why does pharmaceutical advertisement leads to drugs addition?

What are the differences in mrnas of cancer cells and normal cells?

The Venn diagram compares aerobic respiration and anaerobic respiration. Which statement should be categorized only in the aerobic section of the Venn diagram?

The simplest form of sugar

Which statement about the ability of cells to specialise is correct? 1. Plant and animal cells never lose the ability to specialise 2. Most plant cells lose it at an early stage but animal cells do not 3.

A group of mountain climbers experience confusion, tachycardia, edema, and decreased renal output after climbing mount rainier. a nurse recalls this condition is caused by:

Chemical reactions that use up energy are called

This organelle is referred to as the power house of the cell.