FINAL EXAM B.5 ATBAT

Front

What is the primary function of proteins in a human cell?

Back

Proteins catalyze chemical reactions inside the cell.

Front

What is the primary function of lipids in a human cell?

Back

Lipids allow for the transport of certain molecules into and out of the cell.

Front

What distinguishes prokaryotic cells from eukaryotic cells?

Back

The organization of the genetic material.

Front

What is the role of transfer RNA (tRNA)?

Back

Transfer RNA brings amino acids to growing polypeptides in ribosomes.

Front

What is the role of ribosomal RNA (rRNA)?

Back

Ribosomal RNA is a component of ribosomes that helps catalyze protein synthesis.

Front

What is the role of messenger RNA (mRNA)?

Back

Messenger RNA carries genetic information from DNA to ribosomes.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane that requires energy (ATP).

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy (ATP).

Front

How does active transport differ from passive transport?

Back

Active transport requires ATP, while passive transport does not.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space.