KEY WORDS Flashcards
Abiotic
non living factors that affect organsims
active transport
movement of ions and gases against the concentration gradient
aerobic
respiration with oxygen
allele
different version of gene
amino acids
building blocks of proteins
amylase
enzyme that breaks carbohydrates into sugars
anaerobic
respiration without oxygen
aorta
carries oxygenated blood away from the heart
asexual reproduction
reproduction with only one parent resulting in identical offspring
benign tumour
lump of cells that are not invading the body
bile
produced by the liver neutralises stomach acid and emulsifies fats
biodiversity
the range of different organisms that live in an environment
cell membrane
controls what enters and leaves a cell
cell wall
maintains cells shape
chlrorplast
where photosynthesis takes place
chromosome
long stretch of DNA
diffusion
movement of ions or gases from an area of high concentration to low concentration
diploid
two copies of each chromosome
dominant
only one copy of the gene needs to be expressed
ECosystem
the organism and the habitat they live in
endocrine system
system that controls hormones and responses
enzyme
biological catalyst
extremophile
organism that has adapted to live in extreme conditions
FSH
hormone that causes an egg to develop
gamete
sex cell
gene
section of DNA
genotype
what genes are present
genome
all the genes in an organism
haploid
one copy of each chromosome
health
state of physical and mental well being
heterozygous
different copies of gene
homozygous
identical copies of gene
lipase
enzyme that breaks fats into fatty acids and glycerol
lipid
stores of energy that can be broken down to form fatty acids and glycerol
LH
hormone that causes egg to be released
malignant tumour
lump of cells that have the ability to travel to other parts of the body
malaria
parasite transmitted by mosquitoes
measles
viral infection causing fever and rash
meiosis
type of cell division that ends in four haploid daughter cells
meristem
plant tissue found at growing tips
metabolism
chemical process that occurs to maintain life
mitochondria
where respiration takes place
mitosis
type of cell division that ends in two identical daughter cells
nucleus
controls the cell
is where the genetic information is held
omnivore
eats plants and animals
organ system
a number of different organs working together towards one function
osmsosis
transport of water across a partially permeable membrane
ovulation
release of an egg from its ovaries
oxygen debt
happens after aerobic respiration needs oxygen to repay
palisade mesophyll
upper layer cell in a leaf
pancreas
large gland behind the stomach which produces digestive enzymes
phenotype
what characteristics are present
phloem
carries ions around the plant
platelets
small fragment of blood cells that helps clotting
protease
enzyme that breaks proteins into amino acids
proteins
long chains of amino acids that carry out the functions n the body
protist
single celled organism that can cause illness
recessive q
two identical copies of the gene is needed for it to be expressed
RBC
carries oxygen around the blood
ribosomes
where protein synthesis takes place