BIO 100 - Exam 1

The four organic molecules found in all living systems are carbohydrates, nucleic acids, lipids, and ________.

A group of similar organisms capable of interbreeding and producing fertile offspring is a ________.

A group of tissues working together for a common purpose is known as a(n) ________.

A ________ is a tentative statement about the natural world that can lead to a testable deduction.

The first step of the scientific method is ________.

The application of scientific knowledge to improve the condition of humans is known as ________.

The structure of a cell membrane includes a modified form of lipid called a ________.

The universal energy source for cells is ________.

Cells that have a membrane-bound organelles and cytoplasm are classified as ________ cells.

Plasma membranes becomes less fluid when ________ is present.

The net diffusion of water across a plasma membrane is known as ________.

The ________ is surrounded by an outer membrane which encloses an inner membrane that is highly folded; this organelle is associated with the breakdown of chemical bonds in food.

Microtubules and microfilaments compose the ________, which forms an internal network of support for the cell.

The only way that cells can produce ATP in the absence of oxygen is through the process of ________.

Specialized epithelial tissues that produce and secrete a product are known as ________.

Epithelial tissue are classified according to the number of cell layers making up the tissue and ________.

Connective tissue is unique because the cells secrete an ________ that can be a semi-liquid or hardened.

Cells in cartilage that produce the ground substance are the ________.

Cardiac muscle is located only in the ________.

Nervous tissue is composed of two types of cells: ________ that conduct impulses and ________ that surround and protect these cells.

The ability of living organisms to maintain a constant internal environment despite changes in the external environment is _______.

Ligaments attach ________ to bone.

The end of a long bone is known as the ________.

The outer surface of a bone is covered with a tough connective tissue called the ________.

The process by which the cartilage of fetal bones is gradually replaced with bone tissue is ________.

The blood calcium level is regulated by two hormones: ________ causes an increase in blood calcium, while ________ causes a decrease in blood calcium.

Immovable joints such as those found between bones of the skull are ________ joints.

The pure form of matter that cannot be broken down into a simpler form is a(n) ________.

An electrically charged molecule or atom is a(n) ________.

Molecules that are polar and attracted to water are ________; molecules that are nonpolar and therefore not attracted to water are ________.

The process by which cells breakdown organic macromolecules into their subunits is ________.