biology unit 3: Cells

Why do creation scientists believe that God created the "cell?"

1. because the known principles of chemistry do not support evolution 2. because the proper organic chemicals found in cells cannot form spontaneously or remain in the presence of the earth's atmosphere 3. because the complex organic chemicals of life can only be produced within and by the direction of a cell.

organ level

A degree of organism complexity. Organisms at this level have their cells arranged into organs.

system level

A degree of organism complexity. Organisms at this level have their cells arranged into systems.

tissue level

A degree of organism complexity. Organisms at this level have their cells arranged into tissues.

cellular level

A degree of organism complexity. Organisms in this level are either unicellular or colonial.

tissue

A group of cells working together to perform a particular task.

system

A group of organs working together for a common purpose.

organ

A group of tissues working together as a unit for a particular purpose in the body.

muscle fiber

A very long, contracting cell which makes up the muscles of our body.

Which statements describe organisms referred to as "colonial"? A. a multicellular organism B. similar bacteria or protozoa which group together C. tissue D. a group of multiple specialized cells

B

T or F A unicellular alga is specialized.

False

If a particular biological amino acid, protein, or DNA could accidentally form by chance, it could wait around for millions of years (remain stable) while ALL the hundreds of other necessary cellular chemicals were also being formed by accident. because what:

First, that's False, second, Biological chemicals are unstable.

colonial

Organisms that live in a group called a colony.

organism level

The highest level of complexity of a living thing in which the systems work together for the good of the whole. Any living thing must be considered to have reached this level OR highest level of organization and includes the structure and function of all the organ systems in the body

specialization

The limiting of the function of a cell to a specific function.

division of labor

The work being divided up into specialized tasks as in a cell or a society.

muscle fiber

causes the actual contraction of muscles to raise leg.

Which of the following is a system operation in amoeba? excretion kidneys liver bone and fat

excretion.

T or F Since all muscle cells are specialized, they are necessarily identical.

false.

Some leukocytes absorb entire bacteria by the process of:

phagocytosis

Multicellular organisms exhibit a division of labor among cells known as

specialization

differentiation

the maturation of a cell for a specific function