Unit 5 Review

Which of these shows the correct hierarchical sequence?

• organs  ► cells ► tissues ► organ systems

• cells ► tissues ► organs ► organ systems

• organ systems ► tissues ► cells ► organs

• tissues ► cells ► organs ► organ systems

Based on the diagram of the hierarchical organization of a domestic cat, which level of organization is missing from the diagram below?

• DNA

• Veins

• Carbon atom

• Lungs

Which term identifies a group of cells that work together to perform a similar function?

• Molecule

• Organism

• Organ

• Tissue

What would a biologist see if she examined a small piece of a leaf from a plant and a small piece of a root from the same plant through a microscope?

• Both the leaf and the root would be made up of cells

• The leaf would be made up of cells, but the root would not be made up of cells

• The root would be made up of cells, but the leaf would not be made up of cells

• Neither the root nor the leaf would be made up of cells because plants are not made up of cells

Different types of organisms are made of different numbers of cells. Which range best describes the possible number of cells in one organism, from the very smallest organism to the very largest?

• From 1 cell to about 100 cells

• From 1 cell to many millions of cells

• From about 100 cells to about 1,000 cells

• From about 100 cells to many millions of cells

In developing a theory, scientists must have evidence to support it. An example is the cell theory. Look closely at the diagram below

• The cell is the smallest form of life

• Cells contain hereditary information

• Cells come only from pre-existing cells

• The cell is the basic unit of all organisms

What is TRUE about the relationship between cells and the organism that they are a part of?

• Cells are organized into body structures, and they perform basic life functions for the organism

• Cells are organized into body structures, but they do not perform basic life functions for the organism

• Cells perform basic life functions for the organism, but they are not always organized into body structures

• Cells are not organized into body structures, and they do not perform basic life functions for the organism

In the mid-nineteenth century, the discoveries of many scientists were combined to develop the modern cell theory. Which of the following statements is NOT part of the cell theory?

• Cells are produced from existing cells

• Cells are the basic units of structure in living things

• All cells have the same internal structure

• All organisms are made up of one or more cells

In multicellular organisms, what is an important job of all tissues, organs, and organ systems?

• To make sugars for energy

• To maintain homeostasis

• To take in nutrients, and eliminate waste

• To transport nutrients in the body

Animals as tiny as fleas or ants are related to much larger species such as alligators and manatees. Which of the following statements best describes how all living things are alike?

• Living things all undergo similar processes for getting rid of waste within their cells

• Living things all have similar lungs for gas exchange in any environment

• Living things all have structures that allow for advanced movement

• Living things are all alike because they have a circulatory system