B1.3 respiration

Equation for aerobic respiration

glucose + oxygen —> water + carbon dioxide

equation for anaerobic respiration

glucose —> lactic acid

Whats aerobic respiration

A form of respiration that uses a plentiful supply of oxygen to release energy from glucose.

What is anaerobic respiration

A form of respiration that releases energy from glucose when there is an oxygen debt

Where does anaerobic respiration occur

muscle cells

Where does aerobic respiration occur

mitochondria

Whats benedict’s reagent

a reagent used to test for reducing sugars that produces a different colour based on the amount of reducing sugar present

What colour does benedicts solution go when theres reducing sugars

From a blue solution to a brick red precipitate`

What does biuret reagent test for

Checks for the presence of peptide bonds

What colour does Biuret reagent go when theres peptide bonds

from a blue to violet

Define a carbohydrate

A larger molecule that is synthesised from simple sugars

What is cellular respiration

A continuously occurring chemical process which is universal and occurs in all

Is cellular respiration endothermic or exothermic

exothermic, it releases energy in the form of ATP

What is an exothermic reaction

A reaction that releases energy, usually in the form of light or heat

What’s an iodine solution

A solution used to test for the presence of starch

What is the colour change of iodine when starch is present

from a brown to blue-black

What is a lipid

A large molecule synthesised from three fatty acids and a molecule of glycerol

What is respiration

A chemical process that occurs in every cell if a living organism to release energy (ATP) for living processes

What do living organisms need energy for

muscle contractions

building large molecules from smaller ones

keep body temps steady

Why do animals need energy

making proteins, fats and carbs

building new tissues (eg: muscle, tissue, bones)

Why do plants need energy

making amino acids from sugars, nitrates and other nutrients

Combining amino acids to make proteins

what enzyme does starch make

amylase

what enzyme does fat make

lipase

what enzyme does protein make

protease

What is the role of lipids

insulation

protect important organs

cell membrane production

What is starch broken down into

sugars

what is fat broken down into

fatty acids and glycerol

what is protein broken down into

amino acids