Directions, Cells, Tissues and Chemistry

Match up each term with its definition:

• Above

• Superior

• Further away from the midline

• Inferior

• Closer to the point of attachment (joint)

• Medial

• Closer to the midline

• Proximal

• Below

• Lateral

DNA’s essential role in the cell is to:

• Carry the genetic code

• Pump hydrogen ions

• Maintain blood pH

• Break down toxins

The cytoskeleton primarily:

• Stores glycogen

• Drives antibody production

• Provides internal support and shape

• Packages secretions

Cilia on a cell’s surface are used for:

• Increasing absorption area

• Storing calcium ions

• Movement of fluid or the cell surface

• Packaging proteins

Microvilli are small projections that:

• Propel mucus

• Aid in absorption by increasing surface area

• Drive cell division

• Secrete hormones into blood

Centrioles are best associated with:

• Digesting cellular debris

• Organizing spindle fibers during cell division

• Producing ATP

• Storing DNA

Rapidly dividing cells are generally?

• immature

• fully differentiated

• dead

• senescent

Compared with DNA, RNA typically:

• Is double-stranded and uses thymine

• Is single-stranded and uses uracil

• Contains deoxyribose sugar

• Remains only in the nucleus

From simplest to most complex organization, the correct order is:

• Organs → Systems → Tissues → Cells

• Cells → Tissues → Organs → Systems

• Tissues → Cells → Organs → Systems

• Cells → Organs → Tissues → Systems

A tissue is best defined as a:

• Single organ system

• Group of similar cells performing a function

• Single molecule

• Group of organ systems