Define
What is a biological catalyst?
Speeds up reactions without changing shape
What is the difference between absorption and assimilation?
absorption - intake of nutrients
assimilation - use of nutrients
Glucose is a disaccharide
False, it is a monosaccharide
sucrose is composed of
a) glucose + glucose
b) glucose + fructose
c) glucose + galactose
b) glucose + fructose
Give an example of a monosaccharide besides glucose
fructose or galactose
What is emulsification?
breakdown of lipids into smaller droplets
What is the difference between cellular respiration and a respiratory surface?
cellular respiration - energy production
respiratory surface - where gas exchange occurs
All veins carry oxygenated blood
false, almost all veins carry deoxygenated blood
What tests for protein?
a) Benedict's
b) Biuret
c) emulsion
b) Biuret
What is the universal receiver?
AB+
The function of the duodenum
digestion
What happens to an enzyme at very low temperatures?
inactive
thin, large blood supply, moist and large surface area are characteristics of respiratory surfaces
true
Who can donate to A- blood?
a) A+
b) AB-
c) O-
c) O-
what is the optimum pH for pepsin?
2
What are cilia?
located in trachea to beat mucus upwards
how is lymph formed?
extra tissue fluid drains into lymph vessel
nasal cavity -> trachea -> tracheoles -> bronchioles
nasal cavity -> trachea -> bronchi -> bronchioles -> alveoli
What connects to the right atrium?
a) pulmonary artery
b) aorta
c) vena cava
c) vena cava
What are the functions of hydrochloric acid in the stomach?
1. kill pathogens
2. convert pepsinogen to pepsin
3. optimum pH for pepsin
Why does breathing rate increase during exercise?
more oxygen, more respiration, more energy
What is the difference between arteries, veins and capillaries?
artery - thick muscle due to pressure
vein - valves to prevent backflow
capillaries - 1 cell thick for better diffusion
The lower the oxygen debt the fitter the person.
true
blood vessel entering the kidney
a) renal artery
b) hepatic vein
c) pulmonary vein
a) renal artery
labels need to include:
enzyme
substrate
enzyme/substrate complex
products