Card Set Information
balanced internal situation of a cell. It has achieved a balance of internal and external fluids based on temperature, acid/base balance, and the amount and type of critical sunstances
subtances that start or speed up chemical reactions without themselves being changed.
DNA (deoxyribonucleic acid)
contains genetic and heredititary information. This allows cells to replicate.
DNA makes up genes which are contained in chromosomes. Choromosomes control the traits that offspring will recieve parents.
biological proesses necessary for life carried on by all living cells
the basic level of classification for all living things
changing nutrients into protoplasm
ingestion - digestion - assimilation
combination of processes that release energy from glucouse
in humans kidneys, lungs, and skin are involved in excretion.
cell numbers are able to increase when cells divide, this is the cause of mitiosis.
gametes combine with each other to form the starting point for new organisms
90 percent of alife are animals without backbones
atrium and ventricle
two chambers of the heart that aid in circulating blood throughout the organisms body
carries the body and protects the organs
enables the body to carry out 40% of body weight
controls movement and provides communication between the individual and its environment
includes glands that regulate growth blood pressure and other functions
provides means to inhale air with oxygen and exhale co2
assits with bringing oxygen to cells and removing waste from them
processes and helps distribute nutrients
removes waste from the body
viruses are inorganic
what are our bodies defense systems?
lymph cells, white blood cells, and antibodies
chromosomes in humans
children form from a fertilized egg that has 23 pairs so 46 chromosomes. half from each parent
changes or disruption in the dna coding