Chapter 3: Cells and Tissues

Which one of the following is NOT true about the plasma membrane?

• It consists of two lipid layers

• Its lipid components are primarily phospholipids and cholesterol

• It contains proteins for specialized functions

• It regulates the entry and exit of cell materials

• It allows water-soluble molecules to pass through easily

Which of the following statements is NOT part of the cell theory?

• The biochemical activities of cells depend on the number of their subcellular structures.

• The human body is composed of 50 to 100 trillion cells.

• Cells are the basic structural and functional unit of living organisms.

• The activity of an organism depends on its collective cellular activities.

• The continuity of life has a cellular basis.

The molecules that make the cell surface fuzzy, sticky, and sugar-rich are the

• cholesterol molecules

• glycoproteins

• lipid molecules

• proteins

• phospholipids

Which of the following is NOT a structural component of the nucleus?

• nuclear envelope

• nucleolus

• Golgi apparatus

• chromatin

• nuclear pores

The three major components of the cytoplasm are:

• cytosol, organelles, and inclusions

• cytosol, inclusions, and nucleoli

• cytosol, organelles, and nucleoli

• organelles, inclusions, and nucleoli

• organelles, inclusions, and ribosomes

Which of the following is NOT considered a cytoplasmic organelle?

• mitochondria

• Golgi apparatus

• cytoplasm

• rough endoplasmic reticulum

• peroxisomes

Ribosomes are found

• on smooth endoplasmic reticulum

• in the cytoplasm

• on the Golgi apparatus

• on the rough endoplasmic reticulum

• in the cytoplasm AND on the rough endoplasmic reticulum

The organelle that contains enzymes produced by ribosomes and packaged by the Golgi apparatus is the:

• Golgi apparatus

• lysosome

• peroxisome

• ribosome

• rough endoplasmic reticulum

Passive processes that move substances across membranes

• utilize ATP

• employ protein pumps

• transport substances against their concentration gradients

• require no ATP

• include exocytosis and endocytosis

What assists the movement of substances by facilitated diffusion?

• ATP

• Protein carrier or channel

• Lysosomes

• Aquaporins

• Solute pumps