Chapter 5- Cell The Fundamental Unit Of Life

Storage sacs for solid or liquid contents of cell are called ________ .

vacoules

________ made the initial discovery of cells in 1665.

Robert Hooke

The liquid substance that makes up the plasma membrane is called ________.

cytoplasm

________ are primarily organelles in which materials such as starch, oils and protein granules are stored.

Leucoplasts

________ made the discovery of the cell's nucleus in 1831.

Robert Brown

________ and most plant cells tend to gain water through osmosis.

Unicellular freshwater organisms

________ causes the contents of a living plant cell to shrink or contract away from the cell wall when the cell loses water.

Osmosis

________ allows certain substances, such as carbon dioxide or oxygen, to move across the cell membrane.

Diffusion

In the liver cells of the group of animals called vertebrates, ________ plays a crucial role in detoxifying many poisons and drugs.

Smooth Endoplasmic reticulum

The ________ is flexible and is made up of organic molecules called lipids and proteins.

plasma membrane

________ are known as the powerhouses of the cell.

Mitochondria

Thus, diffusion is important in ________ between cells as well as between cells and their surroundings.

gaseous exchange

________ looks rough under a microscope because it has particles called ribosomes attached to its surface.

Rough Endoplasmic Reticulum

In both animals and plants, certain cells found in reproductive organs or tissues divide to create ________, which, when fertilised, produce offspring.

gametes

The ________ also functions as a cytoplasmic framework providing a surface for some of the biochemical activities of the cell.

ER(endoplasmic reticulum)

cytoplasm

The ________ is in charge of holding the elements of the cell and protecting them from damage.