Aqa Biology Paper 1 Key Words Questions And Answers 100% Verified A+ Guaranteed

zygote {Ans: the single new cell formed by the fusion of gametes in sexual reproduction}guard cells {Ans: surround the stomata in the leaves of plants and control their opening and closing}stent {Ans: a metal mesh placed in a blocked or partially blocked artery. They are used to open up the blood vessel by the inflation of a tiny balloon}virus {Ans: pathogens that are much smaller than bacteria and can only reproduce inside living cells of other organisms}red blood cells {Ans: biconcave cells that contain the red pigment haemoglobin and carry oxygen around the body in the blood}metabolism {Ans: the sum of all the reactions taking place in a cell or the body of an organism}