The Cell

In the cell size and diffusion lab, the agar cube represented a cell and the sodium hydroxide (base) solution that diffused into the cube represented ________.

• the nucleus

• the cell membrane

• simple substances like water and gases

• the cytoplasm

For a cell to be efficient, the surface area of the cell should be _______ the volume of the of the cell

• much greater than

• much smaller than

• the same as

• a negative ratio

When a cell diffuses substances effectively, the cell ______.

• efficiently takes in nutrients and eliminates wastes

• builds up waste products

• stays healthy and maintains homeostasis

• both blue and yellow

Schleiden was the first scientist to assert that ______.

• all plants are made of cells

• all animals are made of cells

• all cells come from other cells

• all cells are alive

Rudolph Virchow stated that life must arise from existing life. ________ was the scientist who proved this assertion.

• Robert Hooke

• Anton van Leeuwenhoek

• Theodor Schwann

• Louis Pasteur

Prokaryotic cells are generally ______ compared to eukaryotic cells.

• simpler

• larger

• smaller

• both simpler and smaller

Both prokaryotic cells and eukaryotic cells contain ______.

• cytoplasm

• a cell membrane

• ribosomes

• all of the above

Animal cells contain a cell membrane, which ________.

• serves as a boundary between the cell and the outside

• keeps organelles and materials inside the cell

• allows specific materials into and out of the cell

• all of the above

Plant cells contain

• a cell wall only

• a cell membrane only

• both a cell wall and a cell membrane

• neither a cell wall nor a cell membrane

The nucleus is the control center of the cell and it contains

• a nucleolus, which is chromatin

• chromatin, which detoxifies substances

• a nucleolus, which manufactures ribosomes

• chromatin, which is a carbohydrate