AP Biology: Unit 2 Review (CED)

Front

What is the function of vacuoles in plant cells?

Back

Vacuoles are responsible for storage and release of macromolecules and cellular waste products. In plants, they also aid in maintaining turgor pressure.

Front

Where does the Krebs cycle occur in a cell?

Back

The Krebs cycle occurs in the matrix of the mitochondria.

Front

How does water movement occur in cells with different solute concentrations?

Back

A cell with a higher solute concentration (1.0M) will gain water from a cell with a lower solute concentration (0.5M).

Front

Which type of hormone can easily pass through the cell membrane?

Back

Steroid hormones can easily pass through the cell membrane due to their lipid-soluble nature.

Front

What happens to the surface area to volume (SA:V) ratio as cell size increases?

Back

As cells increase in size, the surface area to volume (SA:V) ratio decreases.

Front

Define osmosis.

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the role of the endoplasmic reticulum in a cell?

Back

The endoplasmic reticulum is involved in the synthesis of proteins and lipids, and it also plays a role in the transport of these molecules.

Front

What is the difference between the smooth and rough endoplasmic reticulum?

Back

The rough endoplasmic reticulum has ribosomes on its surface and is involved in protein synthesis, while the smooth endoplasmic reticulum lacks ribosomes and is involved in lipid synthesis.

Front

What is the function of lysosomes?

Back

Lysosomes contain enzymes that break down waste materials and cellular debris.

Front

Explain the concept of selective permeability in cell membranes.

Back

Selective permeability refers to the ability of a cell membrane to allow certain substances to pass through while blocking others.