breaking down food to release energy that the organism can use
respiration
exactly the same
identical
a nucleic acid found in all living cells; most cells contain both RNA and DNA, but some viruses contain only RNA
RNA
defined here as a group of organisms that can reproduce together to produce fertile offspring
species
a particle made of either RNA or DNA, surrounded by a protein coat; viruses hijack the machinery of a host cell to replicate
virus
feeding: taking in nutrients to provide energy and materials for growth
nutrition
removing toxins or materials excess to requirements from the body
excretion
an identification tool for objects or organisms; most keys provide sets of statements for you to choose between, where answer leads to you another set of statements and finally an identification
key
a sample, for example a piece of rock, or a single organism of a species
specimen
unable to reproduce, usually because gametes cannot be formed
infertile
a permanent increase in size
growth
changing the position of all, or part, of the body
movement
polymers of amino acids; they are important nutrients for living organisms, as they are used in growth and repair
protein
an illness caused by a virus, often known as flu; it affects the respiratory system and usually results in a high temperature
influenza
differences between members of the same species
variation
branching into two; most keys involve a statement to which the user answers yes or no, or pairs of contrasting statements to choose between
dichotomous
able to have offspring
fertile
a microscope that uses electron beams instead of light beams; it is able to achieve much higher resolution than a light microscope
electron microscope
detecting changes in the environment
sensitivity
children
offspring
Your experience on this site will be improved by allowing cookies.