Unit 1 Review

An amoeba is a one-celled organism. The cell theory states that which of the following characteristics of amoebas must be true?

• All amoebas have a regular, spherical shape.

• All amoebas move rapidly using a cilia.

• All amoebas have organelles called chloroplasts

• All amoebas come from other amoebas.

A scientist has discovered an unidentified organism. The cell theory states that which of the following must be true about this new living thing?

• Its cells come from preexisting cells.

• All its cells have different functions.

• It is not made up of cells.

• All its cells are considered nonliving.

4 Many scientists, including Matthias Schleiden and Theodor Schwann, contributed to the cell theory. Which of the following is NOT one of the basic components of the cell theory?

• Cells are the basic units of organisms.

• All living things are composed of cells.

• Cells can arise only from other cells

• All cells must eventually die.

A new species of living thing is discovered. The cell theory states that which of the following must be true about this new living thing?

• It must be made up of one or more cells.

• Its cells must be able to make their own food.

• All its cells must perform the same function.

• Some of its cells must include a cell wall.

Which statement about the cell theory is correct?

• New cells form from old cells that have died.

• Cell organelles are the smallest units of life.

• All cells have the same internal structures.

• All living things are made up of cells.

Which of the following examples best represent the levels of organization from least to most complex?

• Lung cell ➔ lung tissue ➔ lung ➔ respiratory system ➔ human

• Human ➔ lung tissue ➔ respiratory system ➔ lung cell ➔ lung

• Lung cell ➔ respiratory system ➔ lung tissue ➔ lungs ➔ human

• Respiratory System ➔ lungs ➔ body cell ➔ lung tissue ➔ human

The liver is a collection of tissues that metabolize nutrients in the body. The liver is an example of –

• Organism

• Cell

• Organ

• Tissue

Neurons rapidly communicate information throughout the body. Neurons combine to form tissue in the organ known as the brain. Neurons are classified as -

• Cells

• Tissues

• Organs

• Organisms

Tissues working together to perform specialized functions are called

• Organ

• Organism

• Population

• Cell

Which of the following terms would be the appropriate term for the level complexity, which is labeled X?

• Cell

• Organ

• Organism

• Tissue