GP2 Test for HL1 2024

Front

What is a prokaryotic cell?

Back

A prokaryotic cell is a type of cell that lacks a nucleus and other membrane-bound organelles. Examples include bacteria and archaea.

Front

What is a ribosome?

Back

Ribosomes are molecular machines within cells that synthesize proteins by translating messenger RNA (mRNA). They can be found in both prokaryotic and eukaryotic cells.

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius. It explains why large bodies of water do not change temperature quickly.

Front

What are hydrogen bonds?

Back

Hydrogen bonds are weak attractions between a hydrogen atom covalently bonded to an electronegative atom and another electronegative atom. They are crucial in determining the properties of water.

Front

What is the function of chloroplasts?

Back

Chloroplasts are organelles found in plant cells that conduct photosynthesis, converting light energy into chemical energy stored in glucose.

Front

What is surface tension?

Back

Surface tension is the cohesive force at the surface of a liquid that makes it behave as if it were covered with a stretched elastic membrane. It allows objects like paper clips to float on water.

Front

What is the role of mitochondria in a cell?

Back

Mitochondria are known as the powerhouse of the cell, as they generate adenosine triphosphate (ATP), the energy currency of the cell, through cellular respiration.

Front

What is cohesion in terms of water molecules?

Back

Cohesion is the attraction between molecules of the same substance. In water, it leads to phenomena like surface tension.

Front

What is adhesion in the context of water?

Back

Adhesion is the attraction between molecules of different substances. In water, it allows water to stick to other surfaces, such as glass.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, resulting in charged ions, while covalent bonds involve the sharing of electrons between atoms.