MIdterm Review #2

Front

Movement of materials down the concentration gradient through a protein channel is an example of?

Back

Facilitated diffusion is the process where materials move down their concentration gradient through a protein channel without the use of energy.

Front

Which process of the carbon cycle removes carbon dioxide from the atmosphere?

Back

Photosynthesis is the process by which plants convert carbon dioxide and sunlight into glucose and oxygen, effectively removing CO2 from the atmosphere.

Front

Which of the following is not a characteristic of prokaryotic cells?

Back

Prokaryotic cells do not contain membrane-bound organelles, which distinguishes them from eukaryotic cells.

Front

What defines a cell as a eukaryote?

Back

Having a nucleus is a defining characteristic of eukaryotic cells, which distinguishes them from prokaryotic cells.

Front

What is the primary function of the cell membrane?

Back

The primary function of the cell membrane is to control the movement of substances in and out of the cell.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a passive transport process that allows substances to cross membranes with the assistance of special proteins.

Front

What role does photosynthesis play in the carbon cycle?

Back

Photosynthesis removes carbon dioxide from the atmosphere and converts it into organic compounds, thus playing a crucial role in the carbon cycle.

Front

What are ribosomes?

Back

Ribosomes are cellular structures that synthesize proteins by translating messenger RNA.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have both.

Front

What is the function of the nucleus in a eukaryotic cell?

Back

The nucleus houses the cell's genetic material (DNA) and controls cellular activities.