exchange and transport in animals Flashcards
why would you put soda like in a respirometer
would absorb any carbon dioxide produced to it won’t affect results
in respiration is energy transferred to or from the environment
to the environment
(exothermic reaction)
where in the body does respiration take place
in every cell in the body
give the products of anaerobic respiration in plant cells
ethanol and carbon dioxide
T or F
arteries carry blood to the heart
false
carry blood away from the heart
which type of blood vessel has the largest lumen
veins
which type of vessel contains valves
veins
to keep the blood flowing in the right direction
what is the advantage of the walls of capillaries being only one cell thick
distance over which materials are exchanged is very small
rate of diffusion between capillaries and cells is high
which did of the heart pump’s deoxygenated blood to the lungs
the right side
name the blood vessel which carries blood into the right atrium of the heart
vena cava
what is meant by cardiac output
total volume of blood pumped by a ventricle every minute
what is the function of valves in the heart
stopping blood flowing backwards
what other name can be used for erythrocytes
red blood cells
what is the function of of white blood cells
defend body against infection
what is plasma
liquid that carries everything in blood
describe the function of lymphocytes
white blood cells that produce antibodies
some produce antitoxins to neutralise toxins
what is the function of the lungs
transfer oxygen to the blood and remove waste carbon dioxide
what are alveoli
small air sacs in the lungs where gas exchange takes place
how does the size of an organism affect its surface area to volume ration
the larger the organism is, the smaller its surface area to volume ratio
give two waste products that need to be removed from cells
carbon dioxide and urea
give four substances that cells need to take in from the environment
oxygen
water
dissolved food molecules
mineral ions
