i
this organelle controls the activities of the cell and contains DNA
nucleus
this body system transports oxygen and nutrients
circulatory system
a section of DNA that codes for a trait
gene
producers/autotrophs
scientist who developed natural selection
Charles Darwin
this organelle produces ATP energy for the cell
mitochondria
this system controls body activities through electrical signals
nervous system
different forms of the same gene
alleles
organisms that break down dead material
decomposers
preserved remains or traces of ancient organisms
fossils
this structure controls what enters and leaves the cell
cell membrane
this muscle type is voluntary
skeletal muscle
this tool predicts offspring
this shows energy transfer in an ecosystem
food web
a fossil footprint is this kind of fossil
trace fossil
this process creates two identical daughter cells
mitosis
this gland is known as the master gland
pituitary gland
human pairs have this many pairs of chromosomes
23 pairs (46 total)
a relationship where both species benefit
mutualism
better adapted organisms surviving and reproducing
natural selection
these organelles make proteins for the cell
ribosomes
this body system removed metabolic waste
excretory system
pea plants
the largest population an environment can support
carrying capacity
the disappearance of all members of a species
extinction