52 terms

Biology

Vocab for first semester.
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Science law
describes the relationships under certain conditions in nature.
obsevation
a direct method of gathering information in an organized way
Biology
the study of all living things and how they interact with the environment
reproduction
pass along traits from one generation to the next
cell
the basic structural and functional unit of all living things
homeostasis
keeps internal conditons stable
volume
the liter is described as the base unit for this measurement
science theory
an explanantion of the natural phenomenon supported by many observations and experiments over time
hypothesis
a testable explanation of a situation
meter
unit of measurement used to measure length
bio-
the study of life
logos
organisms
reproduction
the characteristics of life that enables the continuum of species
ethics
the set of moral principples or values that guide decisions about scientific topics
bio
life
mitosis
cell reproduction, two identical cells are made from one original cell
homeostasis
control systems that allows for an organism's system to remain in balance
cell
basic structural and functional unit of all living organisms
matter
anything that has mass
theory
a well tested explanation that brings together many observations in science
logos
study
hypothesis
a testable explanation of a situation
cytoplasm
*jelly-like material between membrane and nucleus
*most reactions take place here
nucleus
* made of three parts
* controls most of the cell's activity
cell membrane
* gives cell shape and support
* controls what enters and leaves the cell
cell wall
protects and supports cell
genetics
the study of heredity
meiosis
cell reproduction that makes sex cells
allele
an alternative form of a single gene passed from generation to generation
autosomes
chromosomes that don't determine the sex of an individual
Incomplete dominance
a trait that is a blend of dominant and recessive
dominant
are genes that keep other genes from showing. Shown with a capital letter in the Punnett Square.
DNA
is the molecule that makes up genes and determines traits of all living things
Recessive
are genes that do not show their traits whe dominant genes are present
puberty
is the stage in life when a person begins to develop sex cells
46
number of chromosomes in a regular human cell
pure recessive
2 recessive genes
rRNA
connects the amino acids to build protein chains
23
number of chromsomes in sperm and egg cells
tRNA
READS the base code and finds matching amino acids
chains of protein
amino acids
pure dominance
Homozygous
mRNA
CARRIES the base code from DNA to cytoplasm
gene
short sections of DNA
extinct
life form that is no longer living
vestigial structure
body part with no apparent function
fossil
remains of once living organisms
adaptation
trait that makes living things able to survive
natural selection
something in a living thing's surroundings that determine if it will or will not survive to have offspring
species
a group of living things that can breed and produce offspring
evolution
change in the heredity feature of a group of organisms over time
mutation
change in DNA---> genes---> traits