Exam 3: A: Anatomy of Cells

Nuclear pore complexes regulate what can enter and leave the nucleus.

One function of the microvilli is to increase the surface area of a membrane to provide for more efficient absorption.

Smooth endoplasmic reticulum is the organelle that supplies membrane material for use throughout the cell.

The nucleolus is made up of tightly coiled DNA.

Generally,the more active a cell is,the fewer mitochondria it will contain.

Water-soluble substances easily pass through the cell membrane.

It is likely that a muscle cell would have more mitochondria than a fat cell.

Chromosomes and chromatin are both forms of DNA.

Rafts are stiff groupings of membrane molecules that are rich in cholesterol.

An important function of the cell membrane is the maintenance of cell integrity.

The centriole is a single cylindrical structure at the boundary of the centrosome.

The catalase in the peroxisomes reacts to detoxify carbon dioxide.

The cell's internal supporting framework is called the cytoskeleton.

Hormones attach to special cholesterol molecules in the cell membrane.

The longest extension of a nerve cell can be almost a foot long.

The thinnest cell fibers are tiny,hollow tubes called microtubules.

The largest human cell is the female ovum or egg cell.

The outer portion of the cell membrane is hydrophobic,or water-loving.

Proteins in the cell membrane can control the movement of material through the cell membrane.

The ribosome is an example of a membranous organelle.