Biology A1 Practice - Basic Biological Principles

A jackrabbit has large ears containing blood vessels that help it maintain a constant body temperature by adjusting heat exchange with the surrounding environment. Which characteristic of life is best described by this example?

• Growth

• Energy use

• Organization

• Homeostasis

Which characteristic is shared by all prokaryotic and eukaryotic organisms?

• the ability to reproduce asexually

• the ability to make their own food

• the need for a source of energy

• the need for oxygen for respiration

Which characteristic is shared by both prokaryotes and eukaryotes?

• have organ systems

• make their own food

• contain genetic material

• need oxygen gas to breathe

Which best explains why an animal cell is a eukaryotic cell?

• t contains DNA, which carries hereditary information.

• It contains ribosomes, which function in protein synthesis.

• It has genetic information, which is enclosed within a membrane-bound organelle.

• It has a plasma membrane, which functions to control what enters and leaves the cell.

Life functions are performed at many levels of biological organization. Which level of biological organization is the simplest level at which a structure can support life functions?

• Cell

• Tissue

• Organelle

• Organ system