2023 AQA GCSE BIOLOGY 8461/2H Paper 2 Higher Tier Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] What is the male gamete in flowering plants? - correct answerPollencorrect answerWhat are abiotic factors? - correct answerNonliving componen

2023 AQA GCSE BIOLOGY 8461/2H Paper 2 Higher Tier Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] What is the male gamete in flowering plants? - correct answerPollencorrect answerWhat are abiotic factors? - correct answerNonliving components of ct answerWhat are biotic factors? - correct answerLiving factors of the environment e.g. diseasescorrect answereffect of high concentration of insulin in blood ... - correct answerDecreases blood glucose levels converts glucose into Glycogen by cells/liver/musclescorrect answerWhat diet is required to reduce risk of developing type 2 diabetes? - correct answerLow carbs/ low sugars : controlled dietcorrect answerGive four substances that can cause water pollution? - correct answerFertiliser/pesticides sewage oil faecescorrect answerWhy does the blood have a high concentration of toxic substances if it lacks the particular enzyme? - correct answerToxic substance not broken down causes buildup over time which travels to blood from cells through osmosiscorrect answerWhy may the urine contain high levels of toxic substances? - correct answertoxic substance is diffused out of blood and filtered through kidneys The substance is then not reabsorbedcorrect answerWhy might a low protein diet be used ? - correct answerProteins break down to form amino acids so having a low protein diet helps reduce buildup of amino acids leading to decrease damage of the cellscorrect answerwhat is the process in which water is absorbed into plant roots? - correct answerOsmosiscorrect answerTwo uses of water in plants? - correct answertranslocation photosynthesiscorrect answerWhy is it more energy efficient to rear cows indoors? - correct answerless energy lost due to heat less energy lost due to movementcorrect answertwo disadvantages of rearing cows indoors? - correct answerit is expensive for feeding it increases the likelihood for spread of diseasecorrect answerWhat is a mutation? - correct answerchange in DNA sequencecorrect answerWhy is there a higher body temperature during movement? - correct answermovement requires energy through respiration respiration generates heat which in turn heats the bodycorrect answerhow does vasodilation decrease body temp? - correct answerthe blood flows closer to the surface of the skin