the first to observe under his microscope the structure of a red blood cell of different animals as well as a sperm cell.

stated that all animal tissues are composed of cells

All cells only arise from pre-existing cells

Helpers in cell division:

DNA synthesis; RNA synthesis; assembly of ribosomes

Provides instruction for the cell's activities, (growth, reproduction)

The following are NOT examples of simple permanent tissues, except:

is a pore found in the leaf and stem epidermis that allows for gaseous exchange.

Parenchyma, collenchyma, and sclerenchyma cells. Together these tissue types are referred to as...

is a simple, permanent tissue typically found in the shoots and leaves of plants.

It is the most common type of ground tissue.

are characterized by closely-joined cells with tight junctions.

enables various forms of movement, both voluntary and involuntary.

assists in support and protection of organs and limbs and depending on the location in the body it may join or separate organs or parts of the body.

is responsible for the carrying of electrical and chemical signals and impulses from the brain and central nervous system to the periphery, and vice versa.

muscle tissue - not striated; involuntary

Connective Tissues are composed of the following, except:

is the process by which new cells are generated.

is the process by which gametes are generated for reproduction.

Mitosis - Stage in which the nucleoli disappear.

Mitosis - Stage in which the Nonkinetochore microtubules interact with those from the opposite pole of the spindle.

Mitosis - is the shortest stage of mitosis, often lasting only a few minutes.

Mitosis - Nucleoli reappear.

occurs by the formation of a constriction in the middle of the cell until two daughter cells are formed.