Biology
what is the first line of defense
skin, mucus, hair, acid in stomach
what does the atomic number represent?
Number of protons in nucleus
Units for current
amps
what does the chemoreceptor detect and wth what part of the body?
Taste and chemicals using tongue
what does atomic weight represent?
sum of protons and neurtrons
State ohms law
I x r = V
V/r = I
V/I = r
what signals do the endocrine system send?
Chemical and Hormonal
List properties of noble gases
colourless, odourless, tasteless and nonflammable
What are the charges of protons, neutrons and electrons
protons- positive
neutrons- neutral
electrons- negative
List layers of earth, inner to outer.
inner core, pouter core, mantle, asthenosphere and crust
What is the difference between reflex and stimulus response models?
Reflex skips brain, quicker response to avoid injury
List properties of Metals
Malleable, lustrous, conductive and ductile
what is the difference between conduction, convection and radiation
conduction- solids
convection- liquids and gas
radiation- nothing
Differences between divergent, convergent and transform
divergent, plates separate, convergent they push against, transform the rub against
what are the steps of the reflex arc model?
Stimulus, receptor, spinal cord, effector, response
How many electrons and shells are in helium?
2 and 1 shell
what are the two differences between parallel and series circuits?
Parallel is multiple routes. series is one. You are able to remove one light bulb in parallel with electricity still flowing to the rest. Series, you cannot.