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blood
biology
22 cards
Cards (97)
what is diffusion
the
spreading out
of
particles
from an area of
high concentration
to an area of
lower concentration
definition of
active transport
the process of
substances
being
absorbed
from a
lower
concentration to a
higher
concentration
definition of osmosis
the movement of molecules across a partially permeable membrane from a less concentrated solution to a more concentrated solution
function of a ribosome
they perform
protein synthesis
what is the equation for photosynthesis?
carbon dioxide + water=
glucose
+
oxygen
6Co2+6H2O=
C6H12O6
+
6O2
What are microorganisms that cause disease called?
Pathogens
What do bacteria produce that damage our tissues and make us feel ill?
Toxins/poisons
Which viral disease causes fever and a red skin rash?
Measles
Where do viruses reproduce?
Inside
cells
How is measles virus spread?
Inhalation of
droplets
from sneezes and coughs
How is HIV infection controlled by antiretroviral drugs?
They inhibit the
replication
of the virus
What is a group of cells with a similar structure and function called?
Tissue
What are aggregations of tissues performing specific functions called?
Organs
Which model is used to explain enzyme activity?
Lock & key
Where is amylase produced?
Salivary glands
&
pancreas
Where is lipase produced?
Pancreas
&
small intestine
Where is protease produced?
Stomach,
pancreas
& small intestine
What does amylase do?
Break down
starch
into
sugars/glucose
What does protease do?
Break down
proteins
into
amino acids
What do lipids do?
Break down lipids into
fatty acids
&
glycerol
Where is bile produced and stored?
Produced in
liver
, stored in
gallbladder
What are the 2 functions of bile?
Neutralise
stomach acid
and
emulsifies
fats
What is used to test for sugars?
Benedict's test
What is used to test for starch?
Iodine
What is used to test for protein?
Biuret reagent
Why is the heart described as a double pump?
Right
side pumps to the lungs,
left
side pumps to the body
Which blood vessel brings deoxygenated blood from the body back to the heart?
Vena cava
Which blood vessel transports blood from the heart to the lungs to pick up oxygen?
Pulmonary artery
Which blood vessel transports blood from the lungs to the heart?
Pulmonary vein
Which blood vessel transports oxygenated blood from the heart to the rest of the body?
Aorta
Where does gas exchange take place in animals?
Alveoli
What is the natural resting heart rate controlled by?
Pacemaker cells
in
right atrium
Which device can correct irregularities in the heart rate?
Artificial pacemaker
What are the 3 types of blood vessels?
Capillaries
,
veins
,
arteries
Which blood vessels have the thinnest walls?
Capillaries
Which blood vessels contain valves?
Veins
Which blood vessels have the narrowest lumen?
Arteries
Which blood vessels mainly carry deoxygenated blood?
Veins
Which blood vessels mainly carry oxygenated blood?
Arteries
What 4 main substances does blood consist of?
Plasma, platelets,
WBC
,
RBC
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