2019 AS bredth Flashcards
1
Q
describe exhalation
A
-ribcage moves downwards and inwards
-external intercostal muscles relax
-diaphragm relaxes
2
Q
how can uncertainty in data be removed in experiments
A
use more accurate/ precise apparatus
3
Q
what piece of apparatus can be used to determine blood glucose concentration over a short time period following a meal
A
a biosensor would be used
4
Q
how is a colorimeter callibrated
A
set to zero absorbance using distilled water
5
Q
why is it important to calibrate a colorimeter
A
idea that all values are aligned to the same standard/ comparable/ accurate/valid
6
Q
what is the hollow hole called in the xylem
A
its called the lumen
7
Q
what is safe that can be injected to ensure immunity
A
safe antigens can be injected
8
Q
what type of immunity is vaccination
A
artificial active
