Biology Unit 4

a short, microscopic, hairlike vibrating structure

a temporary protrusion of the surface of an ameboid cell for movement and feeding.

the system that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels

the network of nerve cells and fibers that transmits nerve impulses between parts of the body.

the system of glands that produce endocrine secretions that help to control bodily metabolicactivity

processes that take place in the cells and tissues during which energy is released and carbon dioxide is produced and absorbed by the blood

the central and most important part of an object, movement, or group, forming the basis for its activity and growth.

physiological capacities of organisms that provide data for perception

a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles. Prokaryotes inclu

an organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleu

Skeletal:the hard structure (bones and cartilages) that provides a frame for the body of ananimal Muscular:The muscular system is an org

The 'cell membrane' is a biological membrane that separates the interior of all cells from the outside environment.

the tissue in higher plants that constitutes the vascular system

The excretory system is a passive biological system that removes excess, unnecessary materials from an organism

a water balance equation can be used to describe the flow of water in and out of a system.

a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid, and hi

a measure of the warmth or coldness of an object or substance with reference to some standard value.