Biology AP3 Flashcards
assessment
what happens in the small intestine
Nutrients are absorbed into the blood
what is the test for protein
add copper sulfate and sodium hydroxide to food if purple then protein is present
what happens in your lungs when you exhale
pressure in chest increases, chest decreases in volume, air forced out of lungs, diaphragm relaxes
why are enzymes called catalysts
they speed up reactions without being used up
compare difference in inhaled and exhaled air
inhaled air contains more oxygen, exhaled air contains more carbon dioxide, exhaled air contains more water vapour, exhaled air is warmer
what does the placenta do
supplies oxygen and nutrients, revents infections in the baby, removes waste/ carbon dioxide
what is a chromosome
a long strand of dna/make up your dna you have 46
what is a gene
a short section of dna, eg hair colour
