Unit 1

Question 1

An act or instance of noticing or perceiving.

Answer 1

Observation

Question 2

A group of subjects who are exposed to the variable under study.

Answer 2

Experimental Group

Question 3

A group of subjects closely resembling the treatment group in many demographic variables but not receiving the active medication or factor under study and thereby serving as a comparison group when treatment results are evaluated.

Answer 3

Control Group

Question 4

A coherent group of tested general propositions, commonly regarded as correct, that can be used as principles of explanation and prediction for a class of phenomena.

Answer 4

Theory

Question 5

A mere assumption or guess.

Answer 5

Hypothesis

Question 6

An instance of this; prophecy/forecast.

Answer 6

Prediction

Question 7

A specialized part of a cell having some specific function; a cell organ.

Answer 7

Organelle

Question 8

A usually microscopic structure containing nuclear and cytoplasmic material enclosed by a semipermeable membrane and, in plants, a cell wall; the basic structural unit of all organisms.

Answer 8

Cell

Question 9

An aggregate of similar cells and cell products forming a definite kind of structural material with a specific function; in a multicellular organism.

Answer 9

Tissue

Question 10

A distinct part of an organism that performs one or more specialized functions (eyes, ears, lungs, and heart of an animal and the roots, stem, and leaves of plants).

Answer 10

Organ

Question 11

A test, trial, or tentative procedure; an act of operation for the purpose of discovering something unknown or of testing a principle,supposition, etc.

Answer 11

Experiment

Question 12

The science of life or living matter in all its forms and phenomena, especially with reference to origin, growth, reproduction, structure, and behavior.

Answer 12

Biology

Question 13

A variable that is intentionally changed to observe its effect on the dependent variable.

Answer 13

Independent Variable

Question 14

The act or process of growth, progress.

Answer 14

Development

Question 15

Something that has been organized or made into an ordered whole.

Answer 15

Organization

Question 16

Having or consisting of a single cell.

Answer 16

Unicellular

Question 17

Composed of several or many cells.

Answer 17

Multicellular

Question 18

The sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available.

Answer 18

Metabolism

Question 19

Change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift.

Answer 19

Evolution

Question 20

Any alternation in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment.

Answer 20

Adaption

Question 21

The natural process among organisms by which new individuals are generated and the species perpetuated.

Answer 21

Reproduction

Question 22

The process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations.

Answer 22

Natural selection

Question 23

A method of research in which a problem is identified, relevant data are gathered, a hypophysis is formulated from these data, and the hypothesis is empirically tested.

Answer 23

Scientific method

Question 24

The ability or tendency of an organism or a cell to maintain internal equilibrium by adjusting its physiological processes.

Answer 24

Homeostasis