A level biology OCR exam questions &
answers
how does an endotherm respond to an increase in temperature - ANSWERSdilation of arterioles
near surface of the skin
stating chromosome numbers (2n,4n,n) what correctly describes mitosis and meiosis -
ANSWERSmitosis: 2n -> 4n -> 2n
meiosis: 2n -> 4n -> 2n -> n
haemodialysis vs peritoneal dialysis (2,3) - ANSWERShaemodialysis:
all blood is filtered externally
use of ARTIFICIAL semi permeable membrane
peritoneal:
located in abdomen
waste products are filtered from blood
urea and mineral ions pass into tissue fluid
describe process of adhesion - ANSWERSattraction of water molecules to the impermeable
walls of the xylem tissue
what is not a role of membranes in cells - ANSWERSprovides support
gene therapy facts (4) - ANSWERSchanges resulting in gene therapy are passed onto offspring
germ line therapy affects whole organism
gene therapy is form of genetic engineering
answers
how does an endotherm respond to an increase in temperature - ANSWERSdilation of arterioles
near surface of the skin
stating chromosome numbers (2n,4n,n) what correctly describes mitosis and meiosis -
ANSWERSmitosis: 2n -> 4n -> 2n
meiosis: 2n -> 4n -> 2n -> n
haemodialysis vs peritoneal dialysis (2,3) - ANSWERShaemodialysis:
all blood is filtered externally
use of ARTIFICIAL semi permeable membrane
peritoneal:
located in abdomen
waste products are filtered from blood
urea and mineral ions pass into tissue fluid
describe process of adhesion - ANSWERSattraction of water molecules to the impermeable
walls of the xylem tissue
what is not a role of membranes in cells - ANSWERSprovides support
gene therapy facts (4) - ANSWERSchanges resulting in gene therapy are passed onto offspring
germ line therapy affects whole organism
gene therapy is form of genetic engineering
