half yearlies Flashcards
DNA
an acid which stores genetic information
Chromosomes
twisted strands of DNA
mutations
change in genetic code or structural DNA
mutagens
cause of mutations. can be due to environmental factors
chromatids
two long strands of chromosomes which divide in cell division
nucleotide
sugar, phosphate and base
helicase
enzyme which breaks hydrogen bonds during DNA replication
polymerase
protein which organises complimentary strands during DNA replication
mitosis
cell division through mother cells dividing and creating two daughter cells. only happens in the somatic cells
meiosis
cell division through sex cells. dividing into four cells and combining with female/ male cells
diploid number
46
haploid number
23
convection
heat is transferred through particles. less dense particles rise and denser particles sink
conduction
heat is transferred through particles. the collision of particles transfers heat
radiation
heat is transferred through waves in a vaccum
interpolate
using data given to predict a value within two known valuws
extrapolate
using data to predict a value beyond the known values
gene
a section of chromosome coding for a characteristic
newtons second law
The acceleration of an object is proportional to and in the same direction as the net force acting on it
inference
using data to predict what will happen through observation
hypothesis
a guess that is backed up with scientific research
prediction
a guess of what will happen regardless of research
homologous
pair of 23 chromosomes in cells
mass
how much matter an object contains
weight
how much force is exerted on the object
spindle fibres
protein structure used in mitosis to divide genetic material of a cell
gamete
sex cells
