EOC Review 1

Front

What is the role of proteins in biochemical reactions?

Back

Proteins act as catalysts, speeding up biochemical reactions without being consumed in the process.

Front

What is the significance of the invention of microscopes in biology?

Back

The invention of microscopes allowed for the development of the cell theory, which states that all living organisms are composed of cells.

Front

What is the polar nature of water molecules?

Back

Water molecules have a partial positive charge on one side and a partial negative charge on the other, making them polar.

Front

Why do ionic compounds dissolve easily in water?

Back

The polar nature of water molecules allows them to surround and separate the ions in ionic compounds, facilitating their dissolution.

Front

What distinguishes eukaryotes from prokaryotes?

Back

Eukaryotes have membrane-bound organelles, while prokaryotes lack these specialized structures.

Front

What are microspheres?

Back

Microspheres are complex organic molecules that resemble primitive cells and can form from groups of lipids in liquid water.

Front

Why is it unlikely to find microspheres on meteorites?

Back

Microspheres require liquid water to form, which is not present in the environment of a meteorite.

Front

What is the function of enzymes in biochemical reactions?

Back

Enzymes are proteins that catalyze biochemical reactions, lowering the activation energy required for the reaction to occur.

Front

What is cell theory?

Back

Cell theory is a fundamental concept in biology that states all living organisms are made of cells, and cells are the basic unit of life.

Front

What is the difference between active transport and facilitated diffusion?

Back

Active transport requires energy to move substances against their concentration gradient, while facilitated diffusion does not require energy and moves substances down their concentration gradient.