Optional AP Bio MC Practice (basic level Part I)

Front

What is the primary function of the phospholipid bilayer in cell membranes?

Back

To create a semipermeable barrier.

Front

What process forms macromolecules by joining monomers and releasing water?

Back

Dehydration synthesis.

Front

What is the function of the plasma membrane in animal cells?

Back

It regulates which molecules enter and exit the cell.

Front

What type of bond links amino acids together in a protein?

Back

Peptide bonds.

Front

What is the role of the centrosome in a cell?

Back

Organizing the mitotic spindle.

Front

What is the structure of a phospholipid?

Back

A phospholipid consists of a hydrophilic (water-attracting) 'head' and two hydrophobic (water-repelling) 'tails'.

Front

What is the difference between hydrolysis and dehydration synthesis?

Back

Hydrolysis breaks down macromolecules by adding water, while dehydration synthesis builds macromolecules by removing water.

Front

What is the role of ribosomes in a cell?

Back

Ribosomes are responsible for protein synthesis.

Front

What is the function of the endoplasmic reticulum?

Back

The endoplasmic reticulum synthesizes proteins and lipids.

Front

What is the role of mitochondria in a cell?

Back

Mitochondria are the powerhouses of the cell, producing ATP through cellular respiration.