Final Exam - Cells

The following picture shows a microscopic view of blood. Blood is made of different types of cells that work together.

Which of the following best describes blood?

• organ

• tissue

• organism

• organ system

In biology class, Zach observes cells. Each cell has a structure that separates the inside of the cell from the environment. Which structure is Zach observing?

• nucleus

• cytoskeleton

• cell membrane

• genetic material

Which of these is the smallest?

• cells

• atoms

• molecules

• cell membranes

Which of the following describes the structure of the endoplasmic reticulum?

• a system of folded membranes

• a tiny organelle that has no membrane

• a rigid, protective layer found outside the cell membrane

• an organelle surrounded by a double membrane and containing DNA

Which of the following statements describes a characteristic of a eukaryote?

• It has no cytoplasm.

• It has DNA in a nucleus.

• It is made of many cells.

• It has DNA in its cytoplasm.

A ________________ is the smallest functional and structural unit of all living organisms.

• cell

• organism

• atom

• organelle

An ______________ is any living thing that carries out its own life processes.

• organism

• organelle

• atom

• eukaryote

Organisms made up of just one cell are called ________________.

• cytoplasm

• nucleus

• unicellular organisms

• multicellular organisms

Organisms made up of more than one cell are called ___________________.

• cell

• cell membrane

• unicellular organisms

• multicellular organisms

A ___________________ is a protective layer that covers a cell’s surface and controls materials moving into and out of the cell.

• cell

• organism

• cell membrane

• cytoplasm