Wjec A Level Biology Questions With Accurate Answers 2023

allele {Ans: a variant nucleotide sequence for a particular gene at a certain locus, which codes for an altered phenotype}aerobic respiration {Ans: the release of large amounts of energy , mad available as ATP, from the breakdown of molecules, with the oxygen as the terminal acceptor}abundance {Ans: the number of individuals in a species in a given area or volume}antenna complex {Ans: an array of protein and pigment molecules}antigenic type {Ans: different individuals of the same pathogenic species with different surface proteins, generating different antibodies}autonomic nervous system {Ans: the part of peripheral nervous system that controls autonomic functions of the body by the antagonist activity of the sympathetic and parasympathetic nervous systems}antibiotic resistance {Ans: situation in which a micro-organism that has previously been susceptible to an antibiotic is no longer affected by it}allopatric {Ans: the evolution of new species from demes isolated in different geographical locations}biofuels {Ans: a fuel made by a biological process such as anaerobic digestion, rather than geological processes, such as long-term heat and compression, that formed fossil fuels}absolute refactory period {Ans: period during which no action potential may be initiated}aseptic technique {Ans: laboratory practice that